Public bug reported:
This is *similar* to #1968040 but I'm raising it as a separate issue as
the workarounds there do not work for my system suggesting that this is
indeed a separate bug.
When allowing the system to blank the screen, it becomes impossible to
awaken the screen some unknown length of time after DPMS poweroff is
triggered. Neither the keyboard nor the mouse can be used to trigger the
screens to power back on again once powered down by DPMS.
My system is a custom-build desktop PC with a discrete AMD 6600XT GPU
and two external 4k monitors.
I have tried the workarounds in the above bug and neither worked. Namely
pressing ctrl+alt+f1 (nor any other f-keys in combo with ctrl+alt) does
not bring the monitors back to life, and adding
MUTTER_DEBUG_ENABLE_ATOMIC_KMS=0 to /etc/environment does not change the
behaviour in any way.
The system is still responsive to the network and I can SSH into the box
to investigate when in this scenario.
ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: mutter (not installed)
ProcVersionSignature: Ubuntu 5.15.0-40.43-generic 5.15.35
Uname: Linux 5.15.0-40-generic x86_64
NonfreeKernelModules: zfs zunicode zcommon znvpair zavl icp
ApportVersion: 2.20.11-0ubuntu82.1
Architecture: amd64
CasperMD5CheckResult: pass
Date: Thu Jul 7 09:32:16 2022
InstallationDate: Installed on 2022-05-11 (56 days ago)
InstallationMedia: Ubuntu 22.04 LTS "Jammy Jellyfish" - Release amd64 (20220419)
SourcePackage: mutter
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: mutter (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug jammy
** Attachment added: "output of journalctl --system --no-pager (XZipped due to
being huge - ~900MB)"
https://bugs.launchpad.net/bugs/1980933/+attachment/5601831/+files/system-journal.log.xz
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https://bugs.launchpad.net/bugs/1980933
Title:
Blanked screen doesn't wake up after put into powersave
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