Just for the record, I have found the problem that caused the lockups.
It was the nvidia driver ForceCompositionPipeline parameter in
xorg.conf. Without it the hangs no longer happen, but the warnings are
still present in the log.
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The errors in the kernel log don't appear with kernel version 4.10.17.
However, I still get lockups with that kernel as well.
At this point I think the lockups are probably not related to the
warnings and are possibly caused by a hardware failure. The errors in
the log are still a valid issue, IMH
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
** Tags added: kernel-bug-exists-upstream
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https://bugs.launchpad.net/bugs/1744379
Title:
tcp_fastretrans_alert ker
Is it possible that the lockups are caused by the buggy microcode update
from Intel? Did Canonical revert the microcode update?
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https://bugs.launchpad.net/bugs/1744379
Title:
tcp_fastr
I tried kernel 4.15.0-rc9 and had the same kind of hard lockup. The
system wouldn't react to mouse or keypresses after some idle time. The
log is attached (the kernel was upgraded on Jan 24-th). There are many
errors about soft lockups in the log, although the backtraces are
different from 4.13.
*
> Did this issue start happening after an update/upgrade?
I did not have hard lockups before upgrading to 4.13.0-25. The lockup
happened once, after several days past the upgrade. I did not look in
the logs until after the lockup, so I can't tell if the
tcp_fastretrans_alert errors were there with
Did this issue start happening after an update/upgrade? Was there a
prior kernel version where you were not having this particular problem?
Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.15 kernel[
