Public bug reported:
On Ubuntu 26.10 (development branch) with gnome-shell 51~alpha-0ubuntu3
and kernel 7.0.0-27-generic, gnome-shell reliably segfaults when the
system suspends (lid close). The session is killed and GDM restarts, so
all open applications are lost. The machine is a Samsung Galaxy Book
(11th-gen Intel i7-1165G7, Iris Xe, i915), Wayland, s2idle.
Steps to reproduce: close the lid, wait, reopen. The system resumes but
lands on the GDM login screen with the previous session gone.
The crash timestamp matches PM: suspend entry (s2idle) exactly.
Backtrace of the faulting thread:
[paste the 20100 stack trace]
All frames are in libmutter-51 / glib; the gjs frames at the bottom are
just the normal shell startup path. Reproduced with all third-party
GNOME extensions disabled, so this does not appear to be extension-
related.
A second, separate crash occurs during shutdown/logout, in
meta_seat_impl_run_input_task under meta_context_destroy:
[paste the 84978 stack trace]
Six gnome-shell SIGSEGVs in the past 24 hours, coredumps available.
ProblemType: Bug
DistroRelease: Ubuntu 26.10
Package: gnome-shell 51~alpha-0ubuntu4
ProcVersionSignature: Ubuntu 7.0.0-27.27-generic 7.0.6
Uname: Linux 7.0.0-27-generic x86_64
ApportVersion: 2.35.0-0ubuntu1
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: GNOME
Date: Fri Jul 31 16:58:06 2026
DisplayManager: gdm3
InstallationDate: Installed on 2025-08-06 (359 days ago)
InstallationMedia: Ubuntu 25.04 "Plucky Puffin" - Release amd64 (20250415.3)
RebootRequiredPkgs: Error: path contained symlinks.
RelatedPackageVersions: mutter-common 51~alpha-0ubuntu2
SourcePackage: gnome-shell
UpgradeStatus: Upgraded to stonking on 2026-07-08 (23 days ago)
** Affects: gnome-shell (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug stonking third-party-packages wayland-session
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https://bugs.launchpad.net/bugs/2162576
Title:
gnome-shell (mutter 51.alpha) segfaults on suspend in libmutter
g_list_foreach callback
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