Comment 0 for bug 1980933

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)