I am encountering a similar issue. My system completely shuts down
without any warning while doing nothing resource-intensive. The log just
before shutting down is as follows:
/usr/lib/gdm-x-session[1011]: (EE) client bug: timer event20 debounce:
scheduled expiry is in the past (-0ms), your
Public bug reported:
The Power Saving option was set for the screen to go blank after five
minutes. After the update, the screen will now not come back on when the
mouse or keyboard is utilized. The computer appears to be still
operational as it's registering keystrokes, but it must be restarted
This bug was fixed in the package mesa - 21.2.2-1ubuntu1
---
mesa (21.2.2-1ubuntu1) impish; urgency=medium
* Merge from Debian.
- use -O2 for ppc64el
-- Timo Aaltonen Tue, 28 Sep 2021 10:35:10 +0300
** Changed in: mesa (Ubuntu)
Status: In Progress => Fix Released
Thanks for the bug report. Next time the problem happens, please:
1. Wait 10 seconds.
2. Reboot.
3. Run:
journalctl -b-1 > prevboot.txt
4. Attach the resulting text file here.
5. Check for crash reports using these instructions:
Public bug reported:
System randomly freezes, no clue how to reproduce it. Multiple people
have the same issue. Dell Precision 5550 running Ubuntu 20.04.3 LTS.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: xorg 1:7.7+19ubuntu14
ProcVersionSignature: Ubuntu 5.11.0-37.41~20.04.2-generic
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