Public bug reported:
follow on of bug #2163672. Displays > select 'Mirror' click on 'Apply' crash
the shell
Attaching journal.txt
I don't attach prevjournal.txt because problem causes just a crash of the
shell, NOT a reboot.
ProblemType: Crash
DistroRelease: Ubuntu 26.10
Package: gnome-shell 51~alpha-0ubuntu4
ProcVersionSignature: Ubuntu 7.0.0-14.14-generic 7.0.0
Uname: Linux 7.0.0-14-generic x86_64
ApportVersion: 2.35.0-0ubuntu2
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Tue Aug 18 09:45:11 2026
DisplayManager: gdm3
ExecutablePath: /usr/bin/gnome-shell
ExecutableTimestamp: 1785438187
GsettingsChanges:
InstallationDate: Installed on 2026-08-17 (1 days ago)
InstallationMedia: Ubuntu 26.10 "Stonking Stingray" - Daily amd64 (20260817)
JournalErrors:
Aug 18 09:45:11 corrado-n2-sd-0817 firefox[11451]: Couldn't map window
0x74d916841ae0 as subsurface because its parent is not mapped.
Aug 18 09:45:11 corrado-n2-sd-0817 firefox[11451]: Couldn't map window
0x74d916841ae0 as subsurface because its parent is not mapped.
ProcCmdline: /usr/bin/gnome-shell --mode=ubuntu
ProcCwd: /home/corrado
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
XDG_RUNTIME_DIR=<set>
RelatedPackageVersions: mutter-common 51~alpha-0ubuntu2
SegvAnalysis: Skipped: missing required field "Disassembly"
Signal: 11
SignalName: SIGSEGV
SourcePackage: gnome-shell
StacktraceTop:
?? () from /usr/lib/x86_64-linux-gnu/libmutter-51.so.0
g_list_foreach () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
?? () from /usr/lib/x86_64-linux-gnu/libmutter-51.so.0
?? () from /usr/lib/x86_64-linux-gnu/libmutter-51.so.0
?? () from /usr/lib/x86_64-linux-gnu/libmutter-51.so.0
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin lxd plugdev sudo users
separator:
** Affects: gnome-shell (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-crash need-amd64-retrace stonking
** Attachment added: "journal.txt"
https://bugs.launchpad.net/bugs/2163733/+attachment/5993010/+files/journal.txt
** Information type changed from Private to Public
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https://bugs.launchpad.net/bugs/2163733
Title:
gnome-shell crashed with SIGSEGV in g_list_foreach()
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