Public bug reported:
On Ubuntu 26.10 (development branch), the native .deb installation of
Loupe fails to open any images due to multiple missing rules in its
AppArmor profile.
Logs and blocked interfaces discovered during troubleshooting:
1. D-Bus interface="org.gtk.Actions" member="DescribeAll"
destination="org.gnome.Loupe" denied.
2. interface="ca.desrt.dconf.Writer" member="Change" denied.
3. interface="org.a11y.Bus" member="GetAddress" denied.
4. glycin/bwrap sandbox fails to initialize with status 1:
"bwrap" "--unshare-all" "--die-with-parent" ...
"/usr/libexec/glycin-loaders/2+/glycin-image-rs"
ProblemType: Bug
DistroRelease: Ubuntu 26.10
Package: loupe 50.0-0ubuntu2
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: unknown
CurrentDesktop: ubuntu:GNOME
Date: Thu Sep 24 15:59:25 2026
InstallationDate: Installed on 2024-11-30 (663 days ago)
InstallationMedia: Ubuntu 24.10 "Oracular Oriole" - Release amd64 (20241009.4)
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
SourcePackage: loupe
UpgradeStatus: Upgraded to stonking on 2026-08-28 (27 days ago)
** Affects: loupe (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug stonking wayland-session
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https://bugs.launchpad.net/bugs/2168449
Title:
Loupe AppArmor profile blocks D-Bus interfaces and glycin/bwrap
sandbox (Stonking Stingray)
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