*** This bug is a duplicate of bug 2168329 ***
https://bugs.launchpad.net/bugs/2168329
Public bug reported:
All GTK4 apps on stonking crash when being launched in X11 session. This
is not only in gnome-clocks. Tested on newest Ubuntu MATE daily, Ubuntu
Unity daily and when ran from fluxbox session.
This is a serious issue, because this makes it impossible to use GTK4
apps on X11 flavors and sessions.
ProblemType: Bug
DistroRelease: Ubuntu 26.10
Package: gnome-clocks 50.0-1
ProcVersionSignature: Ubuntu 7.3.0-5.5-generic 7.3.0-rc3
Uname: Linux 7.3.0-5-generic x86_64
ApportVersion: 2.36.0-0ubuntu1
Architecture: amd64
CasperMD5CheckResult: pass
Date: Fri Sep 25 14:09:29 2026
InstallationDate: Installed on 2026-09-25 (0 days ago)
InstallationMedia: Ubuntu-MATE 26.10 "Stonking Stingray" - Daily amd64
(20260920)
ProcEnviron:
LANG=pl_PL.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
SourcePackage: gnome-clocks
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: gnome-clocks (Ubuntu)
Importance: Undecided
Status: New
** Affects: gtk4 (Ubuntu)
Importance: Undecided
Status: New
** Affects: ubuntu-mate-meta (Ubuntu)
Importance: Undecided
Status: New
** Affects: ubuntu-unity-meta (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug stonking
** Also affects: gtk4 (Ubuntu)
Importance: Undecided
Status: New
** Also affects: gtk
Importance: Undecided
Status: New
** No longer affects: gtk
** Also affects: ubuntu-mate-meta (Ubuntu)
Importance: Undecided
Status: New
** Also affects: ubuntu-unity-meta (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2168532
Title:
All GTK4 apps crash on startup when running in X11 session
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