Public bug reported:
Thumbnails are not generated after apt upgrade.
This fixes issue:
sudo sysctl -w kernel.apparmor_restrict_unprivileged_userns=0
I suppose apparmor blocks thumbnail generation.
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: nautilus 1:46.4-0ubuntu0.2
ProcVersionSignature: Ubuntu 6.8.0-124.124-generic 6.8.12
Uname: Linux 6.8.0-124-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.28.1-0ubuntu3.8
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Wed Jun 17 10:58:50 2026
InstallationDate: Installed on 2024-01-12 (887 days ago)
InstallationMedia: Ubuntu 22.04.3 LTS "Jammy Jellyfish" - Release amd64
(20230807.2)
ProcEnviron:
LANG=ru_RU.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
SourcePackage: nautilus
UpgradeStatus: No upgrade log present (probably fresh install)
usr_lib_nautilus:
file-roller 44.3-0ubuntu2
nautilus-extension-gnome-terminal 3.52.0-1ubuntu2
** Affects: nautilus (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug noble third-party-packages wayland-session
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https://bugs.launchpad.net/bugs/2156975
Title:
Apparmor blocks thumbnail generation
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