Thanks! I can see some recurring issues there with atomic KMS reported
by both the kernel and the compositor. So I don't know if it's software
to blame or even a hardware problem (docks are often the problem so try
testing without a dock).
To work around all such issues I can only recommend adding this to
/etc/environment:
MUTTER_DEBUG_FORCE_KMS_MODE=simple
and reboot. If that provides a permanent workaround for you then great.
Other than that I can only recommend removing the dock from the equation
or trying a newer kernel. The easiest way to try a newer kernel is to
use the interim release: Ubuntu 25.04.
** Package changed: mutter (Ubuntu) => linux-hwe-6.11 (Ubuntu)
** Summary changed:
- External monitor freezes
+ [i915] External monitor freezes
** Tags added: i915
** Changed in: linux-hwe-6.11 (Ubuntu)
Status: Incomplete => New
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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to mutter in Ubuntu.
https://bugs.launchpad.net/bugs/2116833
Title:
[i915] External monitor freezes
Status in linux-hwe-6.11 package in Ubuntu:
New
Bug description:
An external monitor frequently freezes, displaying a static image,
which necessitates resetting the display configuration to restore
functionality. This issue occurs consistently across different
connection methods, including a Thunderbolt dock and a direct HDMI
connection.
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: mutter (not installed)
ProcVersionSignature: Ubuntu 6.11.0-29.29~24.04.1-generic 6.11.11
Uname: Linux 6.11.0-29-generic x86_64
ApportVersion: 2.28.1-0ubuntu3.7
Architecture: amd64
CasperMD5CheckMismatches:
./pool/restricted/n/nvidia-graphics-drivers-535/libnvidia-gl-535_535.183.01-0ubuntu0.24.04.1_amd64.deb
./pool/restricted/n/nvidia-graphics-drivers-535/nvidia-kernel-source-535_535.183.01-0ubuntu0.24.04.1_amd64.deb
./pool/restricted/n/nvidia-graphics-drivers-535/libnvidia-compute-535_535.183.01-0ubuntu0.24.04.1_i386.deb
./pool/restricted/n/nvidia-graphics-drivers-550/nvidia-kernel-source-550_550.120-0ubuntu0.24.04.1_amd64.deb
./pool/restricted/n/nvidia-graphics-drivers-550/nvidia-firmware-550-550.120_550.120-0ubuntu0.24.04.1_amd64.deb
./pool/restricted/n/nvidia-graphics-drivers-550/libnvidia-gl-550_550.120-0ubuntu0.24.04.1_amd64.deb
./pool/main/l/linux-firmware/linux-firmware_20240318.git3b128b60-0ubuntu2.9_amd64.deb
./pool/main/l/linux-hwe-6.11/linux-modules-6.11.0-17-generic_6.11.0-17.17~24.04.2_amd64.deb
./pool/main/l/linux-hwe-6.11/linux-modules-extra-6.11.0-17-generic_6.11.0-17.17~24.04.2_amd64.deb
CasperMD5CheckResult: fail
CurrentDesktop: ubuntu:GNOME
Date: Sun Jul 13 20:57:27 2025
InstallationDate: Installed on 2025-03-29 (106 days ago)
InstallationMedia: Ubuntu 24.04.2 LTS "Noble Numbat" - Release amd64
(20250215)
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
SourcePackage: mutter
UpgradeStatus: No upgrade log present (probably fresh install)
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