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June 2019
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Saturday, 1 June 2019 Dereel Images for 1 June 2019
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More gardening
Topic: gardening Link here

Mick Solly (there, I have finally found out his surname, after only 3½ years), the gardener, along today to mulch the garden beds.


A use for high-speed links
Topic: technology, opinion Link here

This month I have increased my Internet link speed from 20 Mb/s down, 5 Mb/s up to 50 Mb/s down, 20 Mb/s up. It doesn't really seem to make much difference: for most things, including video downloads, the limiting factor is upstream. Downloads from ARD run at between 184 kB/s (1.5 Mb/s) and 700 kB/s (5.6 Mb/s), while downloads from SRF run at between 1.2 MB/s (9.6 Mb/s) and 2.65 MB/s (21.2 Mb/s). The extra $10 for the higher speed just aren't worth it, and next month it's back to 20/5.

But today I found a case where it does make a difference, uploading photos to DigitalOcean:

s3cmd sync /home/grog/public_html/Photos/20150503/big/ s3://lemis/grog/Photos/20150503/big/ -P --delete-removed
upload: '/home/grog/public_html/Photos/20150503/big/driveway-nw.jpeg' -> 's3://lemis/grog/Photos/20150503/big/driveway-nw.jpeg'  [1 of 19]
 12288363 of 12288363   100% in    8s  1483.51 kB/s  done
upload: '/home/grog/public_html/Photos/20150503/big/garden-centre.jpeg' -> 's3://lemis/grog/Photos/20150503/big/garden-centre.jpeg'  [2 of 19]
 14733364 of 14733364   100% in   14s  1022.73 kB/s  done

Those are speeds between 8 and 12 Mb/s, clearly only attainable with the higher speed. Is it worth it? Still no, but it's certainly noticeable.


Horse pain, continued
Topic: animals Link here

Yvonne over to Julie Donaghy's place this afternoon to check on Wotan. He's doing well, fortunately.

Then she went to Chris Bahlo's place to feed the horses: Chris herself is at the World Jousting Championships in Lardner Park. Catastrophe! One of the young stallions escaped from his pen, damaged various fencing, and Brana seriously injured her hind leg:


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Worst of all, we couldn't budge her from where she was, outside Chris' garage (the photos above were taken later). The whole issue wasn't helped by problems with my horrible “smart” phone, but finally we established contact with Chris, who didn't want a vet; she'll be back tomorrow and will take a look then. But somehow we had to find a way to get Brana to move. After initial total failure, she gradually did start moving, and we were able to get her inside.

What a weekend!


More phone smarting
Topic: technology, general, opinion Link here

The whole affair with Brana was made worse by my Android “smart” phone. I've come to the conclusion that it is next to useless for making phone calls.

The first pain came when trying to contact the vets. Hit a recorded message saying that they were closed and specifying an emergency number to call. OK, we can do that later. Hang up. How? Press the ON/OFF button?

Wrong, fool. That doesn't turn it off, but it does get rid of the correct screen from which you can hang up. So I got the opportunity to test Tim Bishop's suggestion from yesterday: swipe downwards from the display at the top. Nope, nothing like a phone display. The recording just kept repeating, and in the end I found only one solution: power down the phone.

Similar issues occurred when I was on site and talking to Chris. Some popup (“Courtesy notice: your credit is only $9.98”) obliterated the screen, and I couldn't hang up. Fortunately Chris did.

This is stupid! What gets me is that neither Tim nor Oliver Musch seem to have the same issues. Is that good luck or good management on their part? Is the phone app that came with my Nokia 3 deficient? In any case, I'm thinking of reverting to my old steam-driven mobile phone: at least I can always make calls and terminate them without scratching my head. About the only alternative is to find a saner phone app.


“Air fried” beef skewers
Topic: food and drink, opinion Link here

After today's fun and games we didn't feel much like a good meal, but we had the food prepared, so we did so anyway. Beef skewers, this time lovingly hand-made by Yvonne on the metal skewers that came with the bigger “air fryer”, the one we call the “hair dryer”.

Problem: how do you mount them? In the cutouts beside the holes, once again putting them at an angle:

 
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Next, how long? How hot? Decided on 200° and 15 minutes. But things didn't go well: the bows of the skewers fouled the edge of the vessel, and I had to reposition the whole thing. Here's the way it shouldn't be:

 
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I should leave at least 3 cm of the shaft protruding to avoid that kind of problem.

And to make things easier for me, the device continued to turn the rotisserie even when the lid is open. To stop it I had to power it down, losing all the settings that it makes so hard to set (long power on, menu, select temperature, +/-, select time, +/-, select start).

Finally it was done. Probably too long, maybe not hot enough. Next time I'll try 10 minutes at 220°.


Sunday, 2 June 2019 Dereel Images for 2 June 2019
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Brana revisited
Topic: animals Link here

Over to Chris Bahlo's place this morning to check on Brana, who seems to have survived well enough. I hope that Chris is right that she didn't need a vet.


Dogs and DIY convertibles
Topic: general, animals Link here

It's been pretty wet lately—we've had more rain so far this month than in January and February put together—so took a long walk with the dogs today to make up, 3.58 km according to my drunken GPS tracker:

 
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Halfway down Bliss Road came across what is apparently an attempt to create a convertible the easy way:

 
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What is it about Bliss Road? At the junction of Stones Road there's another one, apparently display pieces:

 
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When I was young I messed around with cars and had similar collections:

 
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But that was (at least in theory) to work on them, while these seem to be ornamental.


Monday, 3 June 2019 Dereel Images for 3 June 2019
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First snowdrop of winter
Topic: gardening Link here

Winter has only just begun, but already the first snowdrop has bloomed:

 
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Infrastructure through the centuries
Topic: general, opinion Link here

We may live out in the sticks, but this part of Dereel has been populated for at least 130 years. In 1889 a map was made, possibly still the most detailed map of the area. Interestingly, it seems that the place was much more populated at the time. Stones Road didn't exist yet, but this map shows Bliss Road (running East/West) and Harrisons Road (North/South in the middle of the image). The block at the top left of the detail, 1000x500 links (about 200x100 m) in size and marked “S. School", has the beginnings of Stones Road on its East side, and on the East side of Harrisons Road, just the other side of the unnamed creek (now Spring Creek) there was a post office.

 
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There's no sign of any construction on the East side of Harrisons Road now; it's just a sheep paddock. But of course we still use these terms when we walk the dogs.

Of course, there are still road signs:

 
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That's on the corner of Bliss Road. How did it fall over? I don't know, but it had been like that for a while when I took the photo 3½ months ago. Is a sign even necessary there? The road is pretty much unused, and Google Maps still claims that both sides are Stones Road. But yes, they've repaired it, with reinforcements:

 
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Is that really worth it? If so, they could have thought of a sign for Bliss Road while they were at it.


Tuesday, 4 June 2019 Dereel
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Trump: Welcome to the United Kingdom
Topic: politics, opinion Link here

So Donald Trump is in the United Kingdom on a state visit, one that they clearly couldn't postpone any longer. He's really welcome:

Once again he avoided the streets of London, apparently on advice of his hosts, and landed his helicopter in Buckingham Palace. And he made himself popular because of his superb manners, walking ahead of the Queen to show her the way:

Admittedly, it's worth looking at this in more detail:

I think that Hanlon's Razor applies here. Not malice, but stupidity.

He applied his malice elsewhere, tweeting insults towards Sadiq Khan, the Lord Mayor of London, and even misspelling his name in the next blob, in the process showing his preference for Jews over Muslims:

.@SadiqKhan, who by all accounts has done a terrible job as Mayor of London, has been foolishly “nasty” to the visiting President of the United States, by far the most important ally of the United Kingdom. He is a stone cold loser who should focus on crime in London, not me......

....Kahn reminds me very much of our very dumb and incompetent Mayor of NYC, de Blasio, who has also done a terrible job - only half his height. In any event, I look forward to being a great friend to the United Kingdom, and am looking very much forward to my visit. Landing now!

What a man!


Moving around
Topic: technology, general, opinion Link here

I've done a lot of travelling in the last few days—just ask Google location services. While looking for something on the web, I was given a price in New Zealand dollars and a phone number to call, also in New Zealand.

But that's gone now. Now I'm in South Yarra.

How does it make these mistakes? Yes, the GPS receiver on my phone is pretty useless, but it's not that bad. Why can't I set the location myself?


Wednesday, 5 June 2019 Dereel Images for 5 June 2019
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First jonquils of winter
Topic: gardening Link here

Winter has already begun, but apart from a solitary snowdrop, we haven't seen much.

But now the first jonquils are flowering too:

 
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And other flowers are doing surprisingly well, notably the Salvia microphylla (first image below), which normally doesn't look good at this time of year. But this one looks better than it ever has done.

 
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Car insurance: the facts
Topic: general, opinion Link here

The more I look at this issue with the car accident three months ago, the more I wonder what's going on. We have:

The photos in the quote were interesting. Firstly, I had thought that the car had been white. Why had I not taken photos myself? More importantly, though, was the damage:


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The damage occurred when I reversed into the car, hitting it with the tow bar.

 
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I don't recall it being as bad as it looks in the photo, but that could be, at least for the largest scrape in the middle.

And the other scratches? The one on the extreme right must certainly have been there before. And it's really hard to see how I could have caused both of the scrapes in the middle. At the very least I would have had to have had two impacts, which certainly wasn't the case, and even then it's not clear how one could be that much higher than the other.

So: time to contact RACV. Did that, fought my way through 2 minutes of menus, and got connected to Laura pretty soon after that. It seems that they have a preliminary notice from the other side, but not the documents that I have. But no matter: in all probability they have already approved the payment, in which case there's nothing I can do, except potentially engage in litigation with the insurer. No way. I know when I'm beat.


Another Android device!
Topic: technology, opinion Link here

ALDI had a 10.1" Android tablet on offer today for the attractive price of $100 (or, as they put it, $99.99). OK, that might be an interesting alternative to my aging car GPS navigator, so I got Yvonne to pick one up for me.

What features does it have? The packaging and minimal instructions are far too polite to irritate me with technical details. Clearly it doesn't have a phone—it doesn't have a SIM card slot—and that's almost a reason to reject it anyway. But still, how about trying it out?

Does it have a GPS receiver? On IRC, Jari Kirma was sure that it would have, but I've had one from ALDI before that didn't. OK, simple, check the pull-down status page.

 
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That doesn't look good. What should it look like? Checked on taskumatti, my Nokia 3 mobile phone, and saw:

 
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No GPS mentioned there either! Why not? Once upon a time, I had this, on talipon (Androd 4.mumble):


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Clearly that was too obvious. People need a challenge to find things.

OK, look in the config pages. Nope, nothing there either.

OK, try to install a GPS app. GPS status seems appropriate. Installed, success! But it didn't show me much in the way of status. At least it didn't tell me that I didn't have a GPS receiver.

OK, try my old favourite, GPS Logger for Android. “This app may not be optimized for your device”. What does that mean? Installed it anyway, and it found my location, though I didn't check on the accuracy. But how? Despite the name, GPS Logger also checks Wi-Fi and mobile cell info, neither of which are very accurate. And how about that, when I disabled that, I didn't get any fixes any more. Comparing the results on the tablet and taskumatti, I got:


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It's not clear why it is requesting cell and “wifi” location updates when they have been disabled, but it doesn't even try to “request GPS location updates” on the tablet.

It's beginning to look more and more like it doesn't have a GPS receiver. But how do I have certainty? How about GPS Test? OK, install and start it up:

 
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That doesn't look good, and it's very different from the display on taskumatti:

 
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What does GNSS mean, and can I rely on it? At the very least I'd expect a clear message like “no GPS receiver on this device, fool”.

By this time it's fairly clear that the device doesn't have a GPS receiver. But why, oh why, can't I get a clear statement? Some GPS software works and pretends one is there, others don't work (just like they often don't work on devices with GPS receivers, for reasons they're too polite to explain). Why doesn't the configuration screen show what the device has?

Ah, says Jari Kirma, I can help there. Install (yet another) app, Droid info (and not Droid info, which I accidentally installed on the second device). It produces a report on the hardware it finds, and in true Android fashion it sends it to my email server in the USA, because it's too polite to access a file system.

Still, finally I got the information I had been looking for. On taskumatti:

FEATURES
Bluetooth: Yes
Bluetooth LE: Yes
GPS: Yes
NFC: Yes
USB Accessory: Yes
WiFi: Yes
WiFi Direct: Yes

And on the tablet:

FEATURES
Bluetooth: Yes
Bluetooth LE: Yes
GPS: No
NFC: No
USB Accessory: Yes
WiFi: Yes
WiFi Direct: Yes

Only a little over an hour. It seemed much longer.

There's a lot of other interesting stuff to look at in the reports. The one that sticks out is (on the tablet):

PRIMARY CAMERA
Resolution: 1.9 MP
Flash: No
Video Resolution: null
Supported Resolutions:
    Image:
    1600x1200
    ...

    Video:

SECONDARY CAMERA
Resolution: 0.3 MP
Video Resolution: null
Supported Resolutions:
    Image:
    640x480
    320x240

    Video:

If I understand that, it has no video whatsoever, and a resolution that was out of date 10 years ago. What a piece of crap! And it also seems to be slow even by Android standards. I'll put off analysing more of the output for another day.


On the move again
Topic: technology, opinion Link here

Following Donald Trump's tweets yesterday wasn't easy, especially as Twitter has decided that it doesn't like my firefox. OK, there are other alternatives, bringing with them typical silly messages:

Date: Wed, 05 Jun 2019 03:30:29 +0000
From: Twitter <verify@twitter.com>
To: Greg Lehey <twit@lemis.com>
Subject: New login to Twitter from Chrome

We noticed a recent login for your account @Twit.
Device: Chrome
Location: Traralgon, Victoria
*Location is approximate based on the login's IP address.
If this was you
Great! There's nothing else you need to do.

Traralgon is one of the more popular locations, probably because Aussie Broadband is located only 12 km from there, close enough for Twitter. But it's 300 km from here, and the theoretical possibility exists that somebody there is really trying to crack my account. OK, fool, if you're basing the guess on my IP address, why don't you even tell me what it is? Sigh.


Thursday, 6 June 2019 Dereel Images for 6 June 2019
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Phone GPS accuracy
Topic: technology, opinion Link here

I've been moaning about the inaccuracy of the GPS receiver in taskumatti, my current Nokia 3 phone. How about some comparisons? The new tablet proved to be a non-starter in that respect, since it doesn't have a GPS receiver. But what about talipon, the old Samsung GT-I9100T? Tried that out today, with both phones next to each other in my shirt pocket.

The results were surprising but inconclusive. First taskumatti, then talipon:

 
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The first is from taskumatti, and the second from talipon. Both are inaccurate, but talipon surprised me by giving up in the middle. And inspecting the logs showed that it thought the date was 10 October 1999; it clearly has the 1024 week bug.

And on the way? We stopped on the way to talk to Lorraine Carranza, who happened to be passing. Again first taskumatti, then talipon:

 
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On careful examination both appear to be equally inaccurate, but talipon looks less so. Still, there's small choice in rotten apples, even if they're not Apples. Would a higher-end phone do better? I have my doubts.

So how far did I walk? My guess in advance was about 2.5 km, but taskumatti suggested 4.08, and talipon (clearly incorrect) still 2.74 km.


Friday, 7 June 2019 Dereel Images for 7 June 2019
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New sprinkler controller
Topic: technology, general, opinion Link here

On Wednesday I received a new sprinkler relay controller, this time with a housing:

But that was all that came with it. No instructions of any kind! How do I use it? I had sent a message to the seller and received the reassuring reply:

Sorry for troubles caused to you.

We will contact our supplier for help.
Please kindly wait 2-3 days, thanks.
Don't worry, we will be responsible for this issue.

Tips:1.We need to deal with thousands of emails every day,in case we forget to inform you,kindly please remind us 2 days later,thanks for your understanding!

Tips:2.Could you please do not leave the neutral feedback even negative feedback on our store during this period?it will be bad effect for our store,we know you are a good buyer,right?

In summary: We have no idea, and we might get back to you if we don't forget, but please don't downvote us.

OK, we've seen this before. What's that chance that the IP address is in the 192.168.0.0/16 address space? That happens so often that I have an alias in my interface configuration:

em0: flags=8843 metric 0 mtu 1500
        options=4019b
        ether bc:5f:f4:c9:9b:bf
        inet 192.109.197.137 netmask 0xffffff80 broadcast 192.109.197.255
        inet6 fe80::be5f:f4ff:fec9:9bbf%em0 prefixlen 64 tentative scopeid 0x1
        inet 192.168.123.123 netmask 0xffff0000 broadcast 192.168.255.255
        nd6 options=29
        media: Ethernet autoselect (1000baseT )
        status: active

Off with nmap, and sure enough, I found something responding at 192.168.1.4. But no ports accessible.

Further investigation showed that my firewall configuration was overly cautious:

ipfw add 00010 allow ip from 192.168.20.0/24 to any

Change that for the entire /16:

ipfw add 00010 allow ip from 192.168.0.0/16 to any

And then, how about that, I can access it with HTTP:

Address: http://192.168.1.4/Port

Well that's informative, isn't it? Tried http://192.168.1.4/Port and got an error 401. OK, what does Google know? Quite a bit, but not obviously related to the relay board. Finally Address: http://192.168.1.4/Port relay brought some results:

 
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I really must learn Chinese. But the rest of the document was in rather brief English, and it showed a whole range of URLs, showing that the programmers only marginally understand HTTP. The “Port” was a metavariable, not for a port, but for a sub-URL (why?). By default it's 30000, and the commands are two digits. For example:

1: Default IP: 192.168.1.4 Port: 30000
Open the browser and enter the address bar: http://192.168.1.4/30000 to enter the
control interface.

2: Relay control HTTP command:
Relay 1-8 way command:

http://ip/30000/00 Relay-01 OFF
http://ip/30000/01 Relay-01 ON
http://ip/30000/02 Relay-02 OFF
http://ip/30000/03 Relay-02 ON

And how about that, that worked. There are some other strangenesses, but the biggest issue that I see now is just installing and testing the device.


Finally! Power feedin configured!
Topic: Stones Road house, technology, general, opinion Link here

Email from Powercor today:

Date: Wed, 5 Jun 2019 04:58:49 +0000 (GMT)
From: CitiPower and Powercor <econnect_no-reply@powercor.com.au>
To: "groggyhimsef@lemis.com" <grog@groggyhimsef.com>
Subject: Notification of works completion for 29 STONES RD, DEREEL VIC 3352
Message-ID: <jwsug000000000000000000000000000000000000000000000PSM0I100X04Ra6oRStmO2WuOVAzfFw@sfdc.net>

And the content? None. Ah, it's “multipart/alternative”, except that there's no alternative to HTML. But that doesn't matter, because it's doesn't say much more than the Subject: line and the request number. My meter is now configured for power feedin, only a little more than three weeks after application and 7 weeks after installation.

But it comes at a good time. Yesterday was sunny, and we generated a record amount of power:


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5.518 MWh! That's worth $745! At this rate I'll pay off the system within months!


Choucroute revisited
Topic: food and drink, opinion Link here

A while back we bought two enormous jars of sauerkraut. We do this too often, but this time I had really planned to make choucroute garni out of them. Today Melanie Bahlo, Chris' sister, was in town, and Yvonne managed to interest both of them in the idea, and Yvonne came up with the idea of a flammekueche as first course.

Somehow my heart wasn't in it. We don't seem to have made it very often: my recipe page dates from 22 June 2002, and since then I only have records of making it on 30 March 2003, 3 April 2004 and 29 March 2007—the last time over 12 years ago, before we moved to Dereel!

Modified the recipe, of course, in the process finding some smoked pork fat dating to the very first time I made it, 17 years ago! It was deep frozen, of course, and to my surprise it tasted perfectly good, and there's still some left over. But I made a number of blunders, and wasn't really happy with the result:

 
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In passing, it's surprising how pale the dish looks. Here's a comparison with 17 years ago:

 
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Once again there was the question of the quantity of potatoes. For 1.5 kg of sauerkraut I wanted 250 g of potatoes. The original recipe wanted 750 g. With Yvonne's encouragement we compromised on 600 g, which I still think is too much.

The flammekueche turned out quite well, but also quite filling:

 
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Saturday, 8 June 2019 Dereel Images for 8 June 2019
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Winter flowers
Topic: gardening, animals, photography, opinion Link here

Walking the dogs to the end of Grassy Gully Road today was not a good idea. Saturdays seem to have more traffic than during the week, and this time I was passed by no fewer than 12 cars, not all of them considerate, but including Lorraine Carranza and Chris Bahlo, the latter bearing horses.

Halfway down saw a surprising sight:

 
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Nothing obvious in that view, but on a short mown area, a solitary Amanita muscaria, here just behind Nikolai:

 
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And at the other end of the road, some tiny flowers (about 3 mm across) that proved to be photo-resistant:

 
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Coming closer a bit helps, but not much:

 
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What are they? I thought they might be a kind of Grevillea, and they appear to be growing wild. Next time I'll come with secateurs and bring some back with me.


Sunday, 9 June 2019 Dereel Images for 9 June 2019
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File archives in the Microsoft space
Topic: technology, opinion Link here

Chris Bahlo took some photos of a ride that she, Melanie and Yvonne went on yesterday, on her Samsung SM-G930F phone (why does Samsung have phone descriptions that have nothing to do with the marketing name?). They were on Google Drive, another Google offering that I find hard to navigate. A total of 26 photos and 4 videos. How do I download them?

Simple: double click with the on the minuscule little fingernail image to the left of a file name, or on the file name, wait 4 seconds, and you get a popup:

 
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Select Download and it loads the image for you. 28 times and you're done! A good thing that Chris took so few photos.

Surely there must be an easier way. But how? Google makes it hard to guess. Spent some time randomly clicking on various parts of the display before hitting pay dirt:

 
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OK, select Download. “Zipping 1 file”. Zipping? These are JPEG files. They can barely be compressed.

Ah, says Peter Jeremy on IRC, ZIP is a convenient way of combining multiple input files into one output file.

Now doesn't that make sense? It spent something like 5 minutes “compressing” the files, using so much effort that it didn't update the “Zipping 1 file” display until it started the download.

And how much did it compress? -88%! The archive was 310 MB, while the uncompressed files took up 165 MB:

=== grog@eureka (/dev/pts/31) ~/Downloads 94 -> du -sck /Photos/yvonne/20190608/orig/JPEG/*
6304    /Photos/yvonne/20190608/orig/JPEG/20190608_133238.jpg
...
5472    /Photos/yvonne/20190608/orig/JPEG/20190608_141017.jpg
165248  total
=== grog@eureka (/dev/pts/31) ~/Downloads 95 -> du -sk Melanie\ Visit\ June\ 2019-20190608T234049Z-001.zip
310016  Melanie Visit June 2019-20190608T234049Z-001.zip

Is that really the best that the Microsoft space can do? As Peter Jeremy pointed out, zip has one other advantage over tar: it has an index of the files. But that's deliberate in the case of tar, which is designed for sequential access media. It stands for tape archive, and it's a derivative of ar, which has been around since before most people in the Microsoft space were born. And of course it has an index.


Photo processing confusion
Topic: photography, technology Link here

After processing Chris Bahlo's photos, Yvonne came to me with a problem: the photos weren't all there when she tried to put them through Ashampoo photo optimizer.

Why? She had processed 24 photos, and there were 24 photos there. No, half were missing. OK, more checking, and discovered that though there were 24 images, some of the images had been created from the wrong source image, photos that she had processed earlier. This is in the convert target, where I convert from the original image in the orig subdirectory to an image in the main directory. The mapping is described in the file Makejpeg, where the entries look like:

20190608_134405_DxO Ride-9 0
20190608_140257_DxO Ride-17 0
26081524_DxO Ride-8 0
26081536_DxO-1 Ride-37 0

The first column is the name of the source file (implicitly in orig), the second in the current directory (implicitly ending in .jpeg), and the third is a rotation parameter that I no longer use.

The first two images are clearly timestamps, the way Samsung saves its images. The second two are modified Olympus filenames (the initial 2 is the camera number, which I have set to easily identify the Olympus cameras we have; 2 is Yvonne's E-PM2). The next three digits, 608, are an encoding of month (6) and day (08), while the last 4 digits are a running number. But when I looked at them, Ride-17.jpeg was a copy of Ride-37.jpeg! How could that happen?

OK, remove everything, convert and optimize. Now Yvonne was happy. But of course I couldn't resist producing examples of the difference in quality between the real camera and the phone:

 
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Those are Ride-8 and Ride-9. Clearly you can hold any camera at an angle, but the image quality and flare reach out and strangle you.

But what do I see?

Image:          Ride-9.jpeg
Date taken:     Saturday, 8 June 2019, 3:44:08 UTC
Location:       37.83333° S, 143.72694° E
Exposure:       1/320 sec, f/7.1 (EV 14.0), 200/24° ISO
Camera:         Olympus E-PM2
Lens:           Olympus M.Zuiko Digital ED 14-42mm f/3.5-5.6 EZ
Focal length:   14.0 mm (full frame equivalent: 86.8 mm)
Focus:          S-AF+MF ∞ (1.84 m - ∞)
Crop factor:    0.36 (0.56 horizontal, 0.65 vertical)
Effective FL:   23 mm (FF: 146 mm)
Field of view:  12.6° horizontal, 11.1° vertical, 16.8° diagonal
Meter mode:     Center-weighted average Program AE
Stabilization:  On, Mode 1
Original size:  5747.5 kP (2559 × 2246 pixels), 2311 kB
Copyright:      Yvonne Lehey

That's clearly wrong, not once, but at least four times. Firstly, the photo is of Yvonne, who had her camera on her. From Makejpeg it's clear that it the source file should have been 20190608_134405_DxO.jpeg, from Chris' camera. The “full frame equivalent” focal length is clearly not from a Micro Four Thirds system camera. And the location can't come from Yvonne's camera, which doesn't have GPS. Somehow the Exif data has been mixed up between two images.

How did it get there? It seems to be a remnant of whatever happened before. The images all have the correct Exif information, but the copy that I keep for quick access on the web hasn't been updated.

How do I track that now, after all the shouting's done?


Monday, 10 June 2019 Dereel
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Finishing the stable alterations
Topic: general, opinion Link here

CJ Ellis along today to finish off the stable alterations that he had started a month ago. I thought it would take him an hour or two, but Yvonne went to help him, and it kept them both going all afternoon. The result was rather different from what I had understood:

 
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ATA issues
Topic: technology, opinion Link here

CJ has now received a new Analogue Telephone Adapter, a Cisco SPA112, with which he is well pleased. It worked out of the box, and now people answer the phone much more quickly than before. I tried to explain that the answers didn't depend on the ATA, but it seems that maybe they did: previously the connection would drop on occasion, and I don't trust the ring tone to really correspond with a ring at the other end.

I had suspected the power supply, since I had lent him an alternative, and he hadn't had any problems with that. My alternative supply only delivers 12 V at 1.5 A, whereas his old Mitron MV1 (MNFMV1?) needed 12 V at 2 A. He brought back my power supply, the Mitron ATA and its power supply. 0.4 A! How can that work? But then I checked the ATA again, and there's no mention of the current requirement. I was sure I saw 2 A somewhere when I lent him the power supply.

Google searches didn't help. It seems that the only person ever to use the Mitron was CJ, to go by the hits, mainly from this diary. OK, I can play around with it and see what I find.

But one of the links was useful: my diary entry for 13 August 2014, where I noted that the Mitron ATA was almost identical to the Netcomm V210P. Another search brought me to this particularly emetic link to the Netcomm V210P User Manual. It, too, was too polite to include specs in its 56 pages, but the “Package Contents” include:

DC12 volts/0.6 A Power Supply Unit

OK, so the Mitron probably doesn't need 2 A. Is 0.4 A enough, or just scraping through?


NFS problems
Topic: technology, opinion Link here

Watching TV this evening, we finished one programme and tried to watch another.

=== grog@teevee (/dev/pts/8) /spool/Series/Matula 441 -> mmp Matula---Der-Schatten-des-Berges-20180330-211500.mp4
bash: /home/local/bin/mmp: Input/output error
=== grog@teevee (/dev/pts/8) /spool/Series/Matula 442 -> df
Filesystem          1048576-blocks      Used     Avail Capacity  Mounted on
/dev/ada0p4                 64,456    40,374    18,925    68%    /
devfs                            0         0         0   100%    /dev
/dev/ada0p2                 64,456    53,785     5,514    91%    /destdir
/dev/ada0p5              5,568,407 5,359,841   152,882    97%    /spool
linprocfs                        0         0         0   100%    /compat/linux/proc
eureka:/videobackup      5,722,572 5,408,413   256,934    95%    /videobackup
eureka:/Photos           7,629,565 5,558,618 1,994,651    74%    /Photos
eureka:/dump             1,907,067 1,715,950    38,551    98%    /dump
eureka:/home             3,705,520 1,757,915 1,651,163    52%    /eureka/home
=== grog@teevee (/dev/pts/8) /spool/Series/Matula 443 -> l /home/local
lrwxr-xr-x  1 root  wheel  18  6 Jan  2015 /home/local -> /eureka/home/local
=== grog@teevee (/dev/pts/8) /spool/Series/Matula 444 -> l /home/local
ls: /home/local/bin: Input/output error

What happened there? Clearly some NFS issue, which also affected eureka:/, the root file system. Force umount, restart mountd (that was necessary), and all was well again. There were some messages in dmesg, tripping over themselves.

nfs server nfs server eueureka:/dump: not responding
r
eka:/dump: not responding
nfs server eureka:/dump: not responding
nfs server eureka:/dump: is alive again
nf<6>nfs server eureka:/dump: is s server eureka:/dumalive apgain
:
 is alive again
nfs server eureka:/dump: is alive again
<<6>6>nnffs s servserver eurer eeureka:/kadump: :i/dump: is alive again
s
 alive again
nfs server eureka:/dump: is alive again

But they proved to date from 1 May; no further issues. What caused that?


Tuesday, 11 June 2019 Dereel Images for 11 June 2019
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Another Android GPS check?
Topic: technology, photography, opinion Link here

Last week I went to a lot of trouble to try to decide whether my new tablet had a GPS receiver or not. But after thinking about it, it occurred to me that I had had issues with OI.Share, which wouldn't install on a device without a GPS receiver.

Is that still the case? Tried downloading. “This app may not be optimized for your device”. But it installed, and of course it couldn't find my camera. Take me to the Settings menu? OK. But it couldn't find that either; presumably the tablet has hidden the Settings menu somewhere where OI.Share can't find it. I note that it has hidden the screen shots elsewhere (in fact, in a more logical place, something like /storage/emulated/0/Screenshots/ instead of /storage/emulated/0/Pictures/Screenshots/), so maybe it has done the same sort of thing with the Settings menu? Do I care? Not really. I have long since decided to return the tablet, and the only thing of interest is the incompatibility from one device to the next.


More focus stacking
Topic: photography, gardening, technology, opinion Link here

It's been a while since I did any serious macro photography, but now our Schlumbergera is flowering, and it cries out for focus stacked photos of the flowers.

But how many? Once again, it's just plain guesswork. I set it up with the closest part of the flower at 25.5 cm from the M.Zuiko Digital ED 30 mm f/3.5 Macro—once again the optically better M.Zuiko Digital ED 60 mm f/2.8 Macro was just too long—and erred on the side of caution with 200 shots at f/5.6. That proved to be correct: it stopped after 57 shots with focus at ∞.

But the shots weren't sharp. Not focus: movement. The exposure proved to be 1/15 s, and the flowers weren't completely stationary. OK, a case for my Olympus STF-8 macro flash unit.

Frustration on frustration. It's bad enough that the camera (Olympus OM-D E-M1 Mark II) can't handle focus stacking (“bracketing”) with a monitor connected to the HDMI output, but I couldn't find any way to get it to take more than a single shot with the flash. It wasn't until I had given up in disgust that I recalled that I had run into this problem before. At the time I had guessed that the electronic shutter was incompatible with TTL flash, though I don't know why that should be. At any rate, it makes the STF-8 useless for exactly the kind of work for which it is sold. On the other hand, web discussions suggest that it should work. What's wrong?


Wednesday, 12 June 2019 Dereel Images for 12 June 2019
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Flat battery
Topic: general Link here

Yvonne off shopping today, as every Wednesday. But this time there was a difference: not only would the car (Holden VZ Commodore) not start, it displayed strange indications in on the dashboard while trying.

Why? In principle the symptoms pointed to a flat battery, but there was no obvious reasons, and the display on the dashboard (notably indicating the high beam warning light) made no sense. But yes, the voltage was down to 12.02 V, whereas on my car it was about 12.5 V. So Yvonne took my car, I put the Holden on charge, and sure enough, it started after a bit of charging.

So why was the battery flat? No obvious reason (leaving lights on, doors open, etc.). How old is it, anyway? It seems that we haven't replaced a battery since we bought the car on 23 September 2013, coming on 6 years ago, and there's no reason to believe that the battery was new then. So it's looking like a change in the not-too-distant future.


More power failures
Topic: Stones Road house, general Link here

Now that we have battery-backed photovoltaic power, I need to set up a cron job to monitor the grid power to the house: we don't notice any short outages. Today I checked and found:

+---------------------+------+----------------------+------+------+---------+--------+-------+--------+------+
| tstamp              | Pac  | Status               | SOC | VBat | PacGrid | PacBat | PacPV | FromPV | W1   |
+---------------------+------+----------------------+-----+------+---------+--------+-------+--------+------+
| 2019-06-01 10:17:07 |  599 | Waiting to connect t |  25 |  264 |       0 |   -924 |  1934 | 0      |    0 |
| 2019-06-01 10:17:08 | 1232 | Waiting to connect t |  25 |  264 |       0 |   -488 |  1766 | 0      |    0 |
| 2019-06-01 10:17:09 | 1227 | Off-grid             |  25 |  264 |       0 |   -589 |  1816 | 0      |    0 |
| 2019-06-01 10:17:10 | 1207 | Waiting to connect t |  25 |  264 |       0 |   -634 |  1840 | 0      |    0 |
...
| 2019-06-01 10:18:10 |  684 | Waiting to connect t |  25 |  263 |       0 |   -731 |  1424 | 0      |    0 |

Why two “Waiting to connect to grid” messages before “Off-grid”? My guess is that the inverter is too polite to complain for a couple of seconds until it's really sure that the grid has gone away. And the total time between the first and last “Waiting to connect” was 63 seconds. On another occasion I had only “Waiting to connect”, and a total time of 61 seconds. So until proof of the contrary, I'll add 3 seconds to the outage times.


More focus stack pain
Topic: photography, opinion Link here

OK, it seems that my Olympus STF-8 macro flash unit doesn't want to play nice with the focus stacking modes of my OM-D E-M1 Mark II. Time to get out the old “Viltrox JY-670 Macro Ring Lite”, which I haven't used for a while.

And it looks like I won't use it again. I can't get it to power on. Damn, why do I have so much trouble with flash units? Apart from exposure and compatibility issues, this is the third unit that has died on me in the last 6 years.

OK, time to look for a new ring flash. I fear, though, that I won't find anything except a replacement Viltrox.


Focus stacking again
Topic: technology, photography, gardening, opinion Link here

So I still don't have any good image series of the Schlumbergera. For the fun of it, tried stitching the ones I had, with the unsharp stamens. The results, stitched with Zerene Stacker were interesting: one (“PMax”) looked quite good, the other (“Dmap”) was singularly useless:

 
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The “PMax” looked better than I had hoped for, but clearly still not good enough. Still, the difference between the two methods was amazing. I must read up on the background.


More VoIP pain
Topic: general, technology Link here

Call from CJ Ellis today. But his name didn't pop up on the phone; instead I saw a number starting with 09, an internal number used by MyNetFone. And he was complaining that people would call him but just get voice mail.

OK, he now has two lines. Was the external number (which, I discovered, is called a Direct inward dial or DID) attached to the other? Got him to call me on it. No, still a (different, clearly) 09 number.

Config issues with MyNetFone? Found my way into CJ's page on their web site. Yes, now he has not two, but three numbers, and the DID is attached to his old Mitron Analogue Telephone Adapter. OK, they offer the option to change on the web site, so did that. No “submit” button, just an ominous “Confirmation Code”.


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The “Help” didn't, but it's my guess that they want to call the old number to confirm the change. Fat lot of good that will do with a non-connected and possibly non-functional ATA.

Called up their phone support, got lots of voice suggestions like “Hang in there” (presumably different from “Hang up”) and “Consider this: (silence)”. Finally, after about 4 minutes, I got the message, first in the confidence-inspiring male voice “currently our wait times are”, then in a panic-stricken female voice “over an hour!”. I could have asked for a call back, but it was too late already. Mañana.


Thursday, 13 June 2019 Dereel Images for 13 June 2019
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Time for an LED flash?
Topic: photography, opinion Link here

One of the issues with my focus stacked photos of the Schlumbergera is the wear aspect: how many photos can you take with a flash tube before it dies? It's easy to take a couple of hundred frames to build a single image. How long would a cheap (or even expensive) flash unit last under those circumstances?

So how about revisiting LED lights? Did a bit of research on eBay and elsewhere and discovered the Travor RF-550D ring light, a device without a manufacturer who wants to own up to it. I also haven't been able to find trustworthy reviews. The Amazon customer reviews are what you might expect: “too bright”; “not bright enough”. Clearly the first of these were written by people who haven't RTFM: you can adjust the brightness down to 1/32, and if the claimed guide number 15 is correct, this would reduce it to 2.7, which would give f/16 at 17 cm. But I have a sneaking suspicion that the guide number is specified in feet, which means a real guide number of 4.6, even weaker than the Olympus STF-8, and an issue if you go beyond, say, 50 cm distance.

Still, the price is right: $36, so I ordered one. We'll see if that is any easier to use.


Fixing CJ's DID
Topic: general, technology, opinion Link here

Called up MyNetFone support today to ask about changing the DID for CJ Ellis' phone. This time I timed things. 3 whole minutes of various announcements, and then the confidence-inspiring male voice “currently our wait times are”, then in a stressed female voice “25 minutes”. So I was able to request a callback, which took another minute, because they were too polite to assume the number on which I called (one of their numbers), and then they wanted to read it back to me and get me to confirm.

It didn't help much. They didn't call back, so after a couple of hours I took another look. Was this confirmation code really for a call back on the old number? I have the old ATA, so it was worth plugging it into the network (behind NAT) and see if it works. Yes! Tried again, but received no call.

Then I took another look at the configuration display:


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That wasn't quite the same as the display. There the number was above the What is a DID? line. Maybe an Overstamped Caller ID is something else. Tried “Add DID”, but it told me I had no numbers.

OK, what happens if I remove the DID from the other number? Potentially I lose it. But basically I had nothing to lose, so did that, added it to the new number, and finally I had:

 
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And that worked. A good thing too, since it's almost impossible to get to MyNetFone support.


DSLM? MILC? EVIL? DEVIL?
Topic: photography, opinion Link here

I've heard a new FLAT (Four Letter Abbreviated Term) today: DSLM. As I guessed from the context, it expands to “Digital Single Lens Mirrorless”.

What a stupid term! We already have “MILC”, for “Mirrorless Interchangeable Lens Camera”, a term that is better but not good: it applies to all old Leica-like cameras as well, though that's not the intention: like most digital cameras, they all have electronic viewfinders. I personally liked “EVIL” (“Electronic Viewer, Interchangeable Lens”), but it seems that that is too whimsical for certain Christians and people with no humour, though it does offer the advantage of being expandable to “DEVIL” (D for Digital, of course).

But somehow current terms don't make sense. “Mirrorless” isn't a description of what the camera has, it's a description of what the camera doesn't have. DSLM has only the marginal advantage that it sounds like DSLR. But why “single lens”? It would suggest that the lens is not interchangeable, quite the opposite of the intention.

OK, I'll have to give up on EVIL. But what would make sense? Digital is not important enough to mention. Single Lens has no meaning any more. Mirrorless is a negative feature. The things do have electronic viewfinders and interchangeable lenses. Interchangeable lenses will remain a distinguishing feature; electronic viewfinder won't. But try as I might, I can't think of a better description than EVIL. Maybe rearrange the letters? VILE? LIVE? “Lens interchangeable, viewfinder electronic”? None really work. Maybe retrofit “MILC” to mean “Modern Interchangeable Lens Camera”, then gradually drop the M?


Friday, 14 June 2019 Dereel Images for 14 June 2019
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Arum buds
Topic: gardening, photography, opinion Link here

There's an Arum in front of the laundry, and it's just coming into flower. But how to photograph it? Clearly I wanted the background out of focus, something that the “full frame” people think that they have invented. So clearly I need a wide aperture lens. The Leica Summilux 25 mm f/1.4?

 
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Maybe this is one of the few cases where I could do with less depth of field. Before I go and buy an extreme f/0.95 or even f/0.85 lens, how about longer focal length? The M.Zuiko Digital ED 75 mm f/1.8, which I bought a year ago and have hardly used? Bingo! Finally a use for the lens:

 
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I like the tips of the flowers.


Offending Christians?
Topic: general, technology, photography, opinion Link here

Yesterday I wrote:

I personally liked “EVIL” (“Electronic Viewer, Interchangeable Lens”), but it seems that that is too whimsical for Christians and people with no humour, ...

A gentle rebuke on IRC from a Christian participant. Yes, that's valid. I have nothing against most Christians, just the militant kind who tell me how to live my life. Like most adherents of other religions, most are good people. Sadly there are too many people of any religion who use it like a weapon and thus do discredit to their religion. “ISIL” comes to mind for the Muslims, but there are certainly too many militant Christians too.

In the case in point I was thinking of the people in the FreeBSD project who decided that the logo was unsuitable, and changed it. Here before and after.

Image

Image

The former image is copyright Marshall Kirk McKusick, and the latter of the FreeBSD foundation, which stipulates, inter alia:

Don't:

The punctuation is original. I interpret the first stipulation to include not removing the indent (which looks silly) nor the size. But then, this is probably the only time I will use this logo. The second stipulation clearly doesn't include Kirk's emblem, which predates FreeBSD and doesn't belong to it.

But then, that's only part of the pain. The log archive is in ZIP format and has spaces in the path names! What a pain just looking at them! Fortunately nothing in the conditions prevents me from assigning a sane name. O tempora! O mores!

Clearly little of this has to do with Christians. I've changed the article to read “certain Christians”.


More web page mods
Topic: technology Link here

From time to time I quote web pages, which don't always play nice with the their title. For example, the NOAA Solar Calculator has a heading “ESRL Global Monitoring Division”, which doesn't help much. And when I quote from my diary I get (for example, for this month) “Greg's diary--June 2019”.

That could be easier. Each article in my diary has its own URL fragment (the part after the # symbol), a coding of the date and time when the article was written. For some time now they have had their own title, like this one, “More web page mods”. Why not put that in the window heading?

I had this bright idea of an auxiliary file with an array of fragment (index), title and topics. Read it in at the beginning of the page, use the fragment to get the title, and simultaneously build up a new array to write out at the end. That way I wouldn't need to do anything special to keep it up to date. It would also allow me to create an index for the page, though with in the order of 100 articles per month it's not clear how that would work out. I can't think of any use for the topics, but it's cheap and a use might appear.

Problem: it seems that there is no way for the page to know what fragment the client has passed. Damn! After a while, though, it occurred to me that I could include the title directly in the URL, so this page, instead of having the URL http://people.lemis.com/grog/diary-jun2019.php#D-20190615-035614, would have the URL http://people.lemis.com/grog/diary-jun2019.php?subtitle=More%20web%20page%20mods#D-20190615-035614. The page could then extract the subject parameter and use it in the heading.

That proved to be surprisingly simple, only about 10 lines. Do I now need a list of topics? That would also not be that difficult.


Panic! on teevee
Topic: technology, multimedia, opinion Link here

While watching TV this evening, the screen went blank. Only relatively briefly; then I got a startup display. teevee had paniced!

That almost never happens. It had been up for 47 days, thanks mainly to the solar electricity system. What caused it?

Jun 14 21:34:09 teevee savecore: reboot after panic: page fault
Jun 14 21:34:09 teevee savecore: writing core to /var/crash/vmcore.4

OK, that shouldn't happen, so it's worth a look.

=== root@teevee (/dev/pts/8) /var/crash 4 -> kgdb /home/obj/eureka/home/src/FreeBSD/svn/stable/11/sys/GENERIC/kernel.debug vmcore.4
GNU gdb 6.1.1 [FreeBSD]

Unread portion of the kernel message buffer:

Fatal trap 12: page fault while in kernel mode
cpuid = 1; apic id = 01
fault virtual address   = 0x0
fault code              = supervisor read data, page not present
instruction pointer     = 0x20:0xffffffff829d83a4
stack pointer           = 0x28:0xfffffe010f85c720
frame pointer           = 0x28:0xfffffe000215de00
code segment            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags        = interrupt enabled, resume, IOPL = 0
current process         = 12 (swi4: clock (0))
trap number             = 12
panic: page fault
cpuid = 1
KDB: stack backtrace:
#0 0xffffffff80b4d6e7 at kdb_backtrace+0x67
#1 0xffffffff80b068e7 at vpanic+0x177
#2 0xffffffff80b06763 at panic+0x43
#3 0xffffffff80f8939f at trap_fatal+0x35f
#4 0xffffffff80f893f9 at trap_pfault+0x49
#5 0xffffffff80f88a9c at trap+0x29c
#6 0xffffffff80f68f6c at calltrap+0x8
Uptime: 47d3h46m30s

In passing it's interesting to note that the stack backtrace is as good as useless: the functions are all called as a result of the problem. To find the real cause you need to dig deeper:

=== kgdb -> bt
#0  doadump (textdump=) at pcpu.h:230
#1  0xffffffff80b064fb in kern_reboot (howto=260)
    at /eureka/home/src/FreeBSD/svn/stable/11/sys/kern/kern_shutdown.c:383
#2  0xffffffff80b06921 in vpanic (fmt=, ap=)
    at /eureka/home/src/FreeBSD/svn/stable/11/sys/kern/kern_shutdown.c:776
#3  0xffffffff80b06763 in panic (fmt=)
    at /eureka/home/src/FreeBSD/svn/stable/11/sys/kern/kern_shutdown.c:707
#4  0xffffffff80f8939f in trap_fatal (frame=0xfffffe010f85c660, eva=0)
    at /eureka/home/src/FreeBSD/svn/stable/11/sys/amd64/amd64/trap.c:904
#5  0xffffffff80f893f9 in trap_pfault (frame=0xfffffe010f85c660, usermode=0) at pcpu.h:230
#6  0xffffffff80f88a9c in trap (frame=0xfffffe010f85c660)
    at /eureka/home/src/FreeBSD/svn/stable/11/sys/amd64/amd64/trap.c:438
#7  0xffffffff80f68f6c in calltrap () at /eureka/home/src/FreeBSD/svn/stable/11/sys/amd64/amd64/exception.S:231
#8  0xffffffff829d83a4 in _nv008794rm () from /boot/modules/nvidia.ko
#9  0x0000000000000001 in ?? ()
#10 0xffffffff829d83b9 in _nv008790rm () from /boot/modules/nvidia.ko
#11 0xfffff800852e9b80 in ?? ()
#12 0xffffffff829d8237 in _nv008791rm () from /boot/modules/nvidia.ko
#13 0xfffffe000215de00 in ?? ()
#14 0xfffffe000215de78 in ?? ()
#15 0x0000000000000000 in ?? ()

nvidia.ko! For which, of course, we have no source. Should I even bother to report it to Nvidia? They'll just ask me to install the latest version of the driver and try again, I fear. But for some time I've been pondering the Radeon card that I got a few months ago and which worked out of the box. A far cry from Nvidia: teevee is down-rev because the latest version didn't work well with my hardware.


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