Greetings all;

I used the sheldon to bore a couple of electrical box washers out to 3/4" 
yesterday as I was in the process of running a 250 volt circuit over to 
the 6040 in preparation to replace that 120 volt motor with a larger 250 
volt vfd and motor. Left it running when I walked away. At 3amish I find 
a report from amanda advising me of a total failure to reach the rpi4 to 
back it up..

So I grab a coat and slippers to go see whats wrong. Monitor blanked, no 
response from the keyboard. Power to the lathe was on, which is 
controlled by linuxcnc. Unplugged the power from the ups, count to 10 
and plugged it back in. Took a while to boot, I assume from doing its 
silent e2fsck, which takes several minutes on a 64Gig u-sd card. And its 
running normally now.

ruined an about 55 day uptime.

The only thing different was that I had left LinuxCNC running, something 
I don't normally do. And it started all new logs so the current session 
has no clues. Looking at older logs, I see it was rebooted twice 
yesterday but they look like clean reboots. And that is all I know. Time 
of first was about 6:23 am, the one it didn't fully recover from was at 
20:17 last night. Lots of noise I don't recall seeing before from the 
randon number generator, all ending in a satisfactory state. But the 
Xorg.0.log.old was huge, like it was re-initing itself several times a 
day, typical stanza pasted here:

[  1861.225] (II) modeset(0): EDID vendor "ONN", prod id 257
[  1861.225] (II) modeset(0): Using hsync ranges from config file
[  1861.225] (II) modeset(0): Using vrefresh ranges from config file
[  1861.225] (II) modeset(0): Printing DDC gathered Modelines:
[  1861.225] (II) modeset(0): Modeline "1920x1080"x0.0  148.50  1920 2008 
2052 2200  1080 1084 1089 1125 +hsync +vsync (67.5 kHz eP)
[  1861.226] (II) modeset(0): Modeline "1366x768"x0.0   85.50  1366 1436 
1579 1792  768 771 774 798 +hsync +vsync (47.7 kHz e)
[  1861.226] (II) modeset(0): Modeline "1920x1080i"x0.0   74.25  1920 
2008 2052 2200  1080 1084 1094 1125 interlace +hsync +vsync (33.8 kHz e)
[  1861.226] (II) modeset(0): Modeline "1280x720"x0.0   74.25  1280 1390 
1430 1650  720 725 730 750 +hsync +vsync (45.0 kHz e)
[  1861.226] (II) modeset(0): Modeline "720x480"x0.0   27.00  720 736 798 
858  480 489 495 525 -hsync -vsync (31.5 kHz e)
[  1861.226] (II) modeset(0): Modeline "1920x1080"x0.0  148.50  1920 2448 
2492 2640  1080 1084 1089 1125 +hsync +vsync (56.2 kHz e)
[  1861.226] (II) modeset(0): Modeline "1440x480"x0.0   54.00  1440 1472 
1596 1716  480 489 495 525 -hsync -vsync (31.5 kHz e)
[  1861.226] (II) modeset(0): Modeline "1440x576"x0.0   54.00  1440 1464 
1592 1728  576 581 586 625 -hsync -vsync (31.2 kHz e)
[  1861.226] (II) modeset(0): Modeline "640x480"x0.0   25.18  640 656 752 
800  480 490 492 525 -hsync -vsync (31.5 kHz e)
[  1861.226] (II) modeset(0): Modeline "720x576"x0.0   27.00  720 732 796 
864  576 581 586 625 -hsync -vsync (31.2 kHz e)
[  1861.226] (II) modeset(0): Modeline "1280x720"x0.0   74.25  1280 1720 
1760 1980  720 725 730 750 +hsync +vsync (37.5 kHz e)
[  1861.226] (II) modeset(0): Modeline "800x600"x0.0   40.00  800 840 968 
1056  600 601 605 628 +hsync +vsync (37.9 kHz e)
[  1861.227] (II) modeset(0): Modeline "800x600"x0.0   36.00  800 824 896 
1024  600 601 603 625 +hsync +vsync (35.2 kHz e)
[  1861.227] (II) modeset(0): Modeline "640x480"x0.0   31.50  640 656 720 
840  480 481 484 500 -hsync -vsync (37.5 kHz e)
[  1861.227] (II) modeset(0): Modeline "640x480"x0.0   31.50  640 664 704 
832  480 489 492 520 -hsync -vsync (37.9 kHz e)
[  1861.227] (II) modeset(0): Modeline "640x480"x0.0   30.24  640 704 768 
864  480 483 486 525 -hsync -vsync (35.0 kHz e)
[  1861.227] (II) modeset(0): Modeline "720x400"x0.0   28.32  720 738 846 
900  400 412 414 449 -hsync +vsync (31.5 kHz e)
[  1861.227] (II) modeset(0): Modeline "1280x1024"x0.0  135.00  1280 1296 
1440 1688  1024 1025 1028 1066 +hsync +vsync (80.0 kHz e)
[  1861.227] (II) modeset(0): Modeline "1024x768"x0.0   78.75  1024 1040 
1136 1312  768 769 772 800 +hsync +vsync (60.0 kHz e)
[  1861.227] (II) modeset(0): Modeline "1024x768"x0.0   75.00  1024 1048 
1184 1328  768 771 777 806 -hsync -vsync (56.5 kHz e)
[  1861.227] (II) modeset(0): Modeline "1024x768"x0.0   65.00  1024 1048 
1184 1344  768 771 777 806 -hsync -vsync (48.4 kHz e)
[  1861.227] (II) modeset(0): Modeline "832x624"x0.0   57.28  832 864 928 
1152  624 625 628 667 -hsync -vsync (49.7 kHz e)
[  1861.227] (II) modeset(0): Modeline "800x600"x0.0   49.50  800 816 896 
1056  600 601 604 625 +hsync +vsync (46.9 kHz e)
[  1861.228] (II) modeset(0): Modeline "800x600"x0.0   50.00  800 856 976 
1040  600 637 643 666 +hsync +vsync (48.1 kHz e)
[  1861.228] (II) modeset(0): Modeline "1680x1050"x0.0  119.00  1680 1728 
1760 1840  1050 1053 1059 1080 +hsync -vsync (64.7 kHz e)
[  1861.228] (II) modeset(0): Modeline "1440x900"x0.0   88.75  1440 1488 
1520 1600  900 903 909 926 +hsync -vsync (55.5 kHz e)
[  1861.228] (II) modeset(0): Modeline "1280x1024"x0.0  108.00  1280 1328 
1440 1688  1024 1025 1028 1066 +hsync +vsync (64.0 kHz e)
[  1861.228] (II) modeset(0): Modeline "1280x960"x0.0  108.00  1280 1376 
1488 1800  960 961 964 1000 +hsync +vsync (60.0 kHz e)
[  1861.228] (II) modeset(0): Modeline "1680x1050"x0.0  187.00  1680 1800 
1976 2272  1050 1053 1059 1099 -hsync +vsync (82.3 kHz e)
[  1861.229] (--) modeset(0): HDMI max TMDS frequency 225000KHz

[  3661.143] (II) modeset(0): EDID vendor "ONN", prod id 257
[  5461.166] (II) modeset(0): EDID vendor "ONN", prod id 257

Apparently is going to repeat until it crashes.

But no clue if this is related. I've put a tail on the current 
Xorg.0.log. And yes, its repeating, note time stamp of next one starting 
that I just pasted above.

Thanks for looking. And since this is the rt-preempt kernel for a raspi, 
there is not any support and messages to the forum are ignored, BTDT, 
got told off for wasting their time.

So where do I report it?

Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.
 - Louis D. Brandeis
Genes Web page <http://geneslinuxbox.net:6309/gene>


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