Public bug reported:
On this Kaby Lake G laptop, GNOME Shell blanks the screen for a second
each time the AMD GPU is powered up. Triggers for powering up include:
launching something which loads GL such as Steam or glxinfo, loading the
Display configuration page, and so on.
This behaviour does *not* occur with GNOME Shell under X, so it's
probably something to do with mutter's KMS interactions.
Because the GPU powers down quite aggressively (I think it's about 5sec
without activity) this can be quite annoying :)
ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: gnome-shell 3.33.91-1ubuntu1
ProcVersionSignature: Ubuntu 5.1.0+bcachefs.git20190828.bc3a6a71-1-generic 5.1.2
Uname: Linux 5.1.0+bcachefs.git20190828.bc3a6a71-1-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu7
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Fri Aug 30 09:48:25 2019
DisplayManager: gdm3
InstallationDate: Installed on 2019-08-29 (0 days ago)
InstallationMedia: Ubuntu 19.10 bcachefs (20190828)
RelatedPackageVersions: mutter-common 3.33.91-1ubuntu1
SourcePackage: gnome-shell
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: gnome-shell (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug eoan
** Description changed:
On this Kaby Lake G laptop, GNOME Shell blanks the screen for a second
each time the AMD GPU is powered up. Triggers for powering up include:
launching something which loads GL such as Steam or glxinfo, loading the
Display configuration page, and so on.
This behaviour does *not* occur with GNOME Shell under X, so it's
probably something to do with mutter's KMS interactions.
+
+ Because the GPU powers down quite aggressively (I think it's about 5sec
+ without activity) this can be quite annoying :)
ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: gnome-shell 3.33.91-1ubuntu1
ProcVersionSignature: Ubuntu 5.1.0+bcachefs.git20190828.bc3a6a71-1-generic
5.1.2
Uname: Linux 5.1.0+bcachefs.git20190828.bc3a6a71-1-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu7
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Fri Aug 30 09:48:25 2019
DisplayManager: gdm3
InstallationDate: Installed on 2019-08-29 (0 days ago)
InstallationMedia: Ubuntu 19.10 bcachefs (20190828)
RelatedPackageVersions: mutter-common 3.33.91-1ubuntu1
SourcePackage: gnome-shell
UpgradeStatus: No upgrade log present (probably fresh install)
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https://bugs.launchpad.net/bugs/1842009
Title:
[Wayland] Screen blanks for a second whenever discrete GPU is powered
up
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