You have been subscribed to a public bug:
Problem: The system does not suspend normally when using a kernel above
version 5.13.0-35, and instead locks up and must be reset.
1) Ubuntu Studio 20.04
Description: Ubuntu 20.04.4 LTS
Release: 20.04
2) Kernel 5.13.0-37, 5.13.0-40, 5.13.0-41 all do the same...
3) What I expect to happen: System goes into STR state normally and can
be resumed upon pressing the power button.
4) What happens instead: Screen goes blank, hard drives spin down, then
spin back up again, screen stays blank, system does not enter STR state
(CPU, GPU, PSU fans keeps running etc), and system is now locked up and
can't be recovered unless hard reset.
** Affects: linux-hwe (Ubuntu)
Importance: Undecided
Status: New
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System won't go into suspend normally with kernel above 5.13.0-35
https://bugs.launchpad.net/bugs/1973086
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which is subscribed to linux-hwe in Ubuntu.
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