https://bugzilla.kernel.org/show_bug.cgi?id=199349
Tom Li (biergaizi2...@gmail.com) changed:
What |Removed |Added
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CC| |biergaizi2...@gmail.com
--- Comment #4 from Tom Li (biergaizi2...@gmail.com) ---
There's a race condition in the kernel cpufreq code, and could cause a deadlook
when shutting down or rebooting the system. However, previously we are lucky
and didn't trigger the race condition so the bug didn't show up. But since
Linux v4.20, there have been changes to the RCU subsystem and thus exposing the
bug. The developers are still discussing a systematic solution. If you know how
to compile a kernel, you can try applying this patch,
https://lkml.org/lkml/2018/11/13/857. If you don't, you should try reporting
the bug to Ubuntu and ask the maintainers to include this patch in the next
kernel revision, and see if it fixes your problem.
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