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[Solved] System crashes after udev-trigger
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Rinne
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Joined: 14 Sep 2008
Posts: 17

PostPosted: Tue May 21, 2019 4:42 pm    Post subject: [Solved] System crashes after udev-trigger Reply with quote

After a rather large update yesterday, my System refuses to boot normally.

I have by now traced it down to the start of udev-trigger.

When starting udev-trigger, the screen will lose its signal after roughly a second, after 5 or so more seconds, all usb devices will shut off.
Additionally, I get the following error message for all partitions when LVM tries to start:
Code:
WARNING: Device /dev/sda1 not initialized in udev database even after waiting 10000000 microseconds.


Neither udev / eudev, nor lvm were part of the update.

I am really out of ideas what to try next.
What I have done so far:

followed the GCC Upgrade Documentation (Only went from 8.2 to 8.3, though)
- Rebuilt the entire System (@System, then @world)
- booted different kernels, including newly built ones
- checked all logfiles
- reinstalled udev and eudev
- Activated Interactive Mode and Logging in RC
- Put all package versions that were installed in package.mask and emerged world again.
-- Except GLIBC and GCC, because of Downgrade breakage
-- Interestingly, only roughly 70 packages were downgraded / reinstalled. While the update had 190 builds.

My main Problem now is that I have no idea what exactly causes the failure.
Nothing is logged for the start of udev-trigger.
I also tried to
Code:
rc-service -dv start udev-trigger >> ud.log
, but the Output is still sent to the screen (which vanishes immediately, of Course) and ud.log remains empty.

The System seems to Freeze completely, as rc-service start udev-trigger && reboot doesn't reboot the System.

The packages that were installed:
https://pastebin.com/xBgnwcKW


Last edited by Rinne on Sun May 26, 2019 6:55 pm; edited 1 time in total
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Rinne
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Joined: 14 Sep 2008
Posts: 17

PostPosted: Thu May 23, 2019 8:42 am    Post subject: Reply with quote

Figured I configured udev logging in the wrong file.

After activating udev log Level debug, I get the following Output in /var/log/debug:
https://bpaste.net/show/fe5194eb4314

in /var/log/kern.log

https://bpaste.net/show/dc43658097a2

Note that - while not directly visible here - the last line in each is filled with NUL values if I open it in in Notepad++ and unreadable characters if I open it in less.
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Rinne
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Joined: 14 Sep 2008
Posts: 17

PostPosted: Sun May 26, 2019 6:55 pm    Post subject: Reply with quote

Solved. Kinda.

Traced it down to the loading of amdgpu.
Found a Redhat Bugtracker issue that pointed to a firmware bug: https://bugzilla.redhat.com/show_bug.cgi?id=1661681
It seems to affect all (as in.. both) of the linux-firmware versions currently in portage.
20190514 and 20190502

I 'fixed' it by copying the amdgpu firmware from the current systemrescuecd to my system.
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