1

Since I switched to Ubuntu 19.10, I've been having untimely freezes. Some of them last a few seconds (between 2 and 5 seconds) but others completely block the computer and my only solution is to use the magic keys or to force the shutdown via the shutdown button.

I saw that it could be a kernel regression, nevertheless the proposed solutions were applied, without success.

Are there solutions to this problem?

Information:

Vendor: Lenovo
Model: Legion Y540-15IRH
Linux: 5.3.0-40-generic x86_64

Update:

As recommended by user535733, I looked in /var/log/syslog at a time close to the freeze and this is what I found:

Feb 26 22:07:19 mrsquaare-Legion-Y540-15IRH systemd-udevd[425]: Worker [4654] terminated by signal 9 (KILL)
Feb 26 22:07:19 mrsquaare-Legion-Y540-15IRH systemd-udevd[425]: 0000:01:00.3: Worker [4654] failed
Feb 26 22:07:19 mrsquaare-Legion-Y540-15IRH kernel: [ 1225.182894] BUG: unable to handle page fault for address: ffffae87c02ad000
Feb 26 22:07:19 mrsquaare-Legion-Y540-15IRH kernel: [ 1225.182901] #PF: supervisor read access in kernel mode
Feb 26 22:07:19 mrsquaare-Legion-Y540-15IRH kernel: [ 1225.182904] #PF: error_code(0x0000) - not-present page
[...]

See complete logs

I also redirected dmesg -w to a file before the crash, which also reports the same problem.

MrSquaare
  • 31
  • Check /var/crash for .crash files that match the time of a freeze-requiring-reboot. Check top and free for unusual disk or CPU activity. Note the exact time of a short freeze and look in /var/log/syslog at that time for error messages and other clues. – user535733 Feb 26 '20 at 21:02
  • @user535733 Thank you for your response, I updated the post. And unfortunately I don't have any files in /var/crash. – MrSquaare Feb 26 '20 at 21:23
  • Take the entire log section starting with BUG: unable to handle page fault for address and ending when you began to reboot, copy it into a pastebin, and put the link in your question. – user535733 Feb 26 '20 at 21:36
  • @user535733 Thanks for the advice, I've updated the post. – MrSquaare Feb 26 '20 at 21:44
  • Test to see if the problem occurs using a 20.04 LiveUSB in the "Try Ubuntu" environment. If so, please file a bug report against the linux package: ubuntu-bug linux. Add your log to the bug report. That's all you can really do for the freeze-requiring-reboot -- the kernel crashed hard. Possible GPU issue, possibly not -- I'm not expert at deciphering stacktraces. – user535733 Feb 26 '20 at 21:48

0 Answers0