The Tor Browser is actually installable on Ubuntu, and we have
privacy-conscious folks here who are Ubuntu Developers. We just were
absolutely slammed in more ways than we imagined would happen this
cycle and things slipped through the cracks. This is probably one of
them.

You can follow the instructions for adding an AppArmor profile to work
around the issue (they're up somewhere in the comments, near the top).
Also, where is your Tor Browser binary on your filesystem? We may be
able to add a profile specifically for it.

On Mon, May 6, 2024 at 2:55 PM Zed <email address hidden> wrote:
>
> Probably not in scope but the Tor Browser also fails to start properly:
> https://forum.torproject.org/t/ubuntu-24-04-daily-and-tor-tabs-crashing-
> immediately/11822/7.  I can see why Ubuntu might not want to allow such
> programs but, a universal distribution should be cognizant that some of
> its users value privacy and that default apparmor profiles make it
> problematic for such users to maintain their privacy.
>
> --
> You received this bug notification because you are a member of Lubuntu
> Packages Team, which is subscribed to the bug report.
> https://bugs.launchpad.net/bugs/2046844
>
> Title:
>   AppArmor user namespace creation restrictions cause many applications
>   to crash with SIGTRAP
>
> Status in AppArmor:
>   New
> Status in Wike:
>   New
> Status in akonadiconsole package in Ubuntu:
>   Fix Released
> Status in akregator package in Ubuntu:
>   Fix Released
> Status in angelfish package in Ubuntu:
>   Fix Released
> Status in apparmor package in Ubuntu:
>   Fix Released
> Status in bubblewrap package in Ubuntu:
>   Won't Fix
> Status in cantor package in Ubuntu:
>   Fix Released
> Status in devhelp package in Ubuntu:
>   Fix Released
> Status in digikam package in Ubuntu:
>   Fix Released
> Status in epiphany-browser package in Ubuntu:
>   Fix Released
> Status in evolution package in Ubuntu:
>   Fix Released
> Status in falkon package in Ubuntu:
>   Fix Released
> Status in firefox package in Ubuntu:
>   Confirmed
> Status in foliate package in Ubuntu:
>   Fix Committed
> Status in freecad package in Ubuntu:
>   Invalid
> Status in geary package in Ubuntu:
>   Fix Released
> Status in ghostwriter package in Ubuntu:
>   Fix Released
> Status in gnome-packagekit package in Ubuntu:
>   Invalid
> Status in goldendict-webengine package in Ubuntu:
>   Fix Released
> Status in guix package in Ubuntu:
>   New
> Status in kalgebra package in Ubuntu:
>   Fix Released
> Status in kchmviewer package in Ubuntu:
>   Fix Released
> Status in kdeplasma-addons package in Ubuntu:
>   Fix Released
> Status in kgeotag package in Ubuntu:
>   Fix Released
> Status in kiwix package in Ubuntu:
>   Incomplete
> Status in kmail package in Ubuntu:
>   Fix Released
> Status in konqueror package in Ubuntu:
>   Fix Released
> Status in kontact package in Ubuntu:
>   Fix Released
> Status in loupe package in Ubuntu:
>   Fix Released
> Status in marble package in Ubuntu:
>   Fix Released
> Status in notepadqq package in Ubuntu:
>   Fix Released
> Status in opam package in Ubuntu:
>   Fix Released
> Status in pageedit package in Ubuntu:
>   Fix Released
> Status in plasma-desktop package in Ubuntu:
>   Fix Released
> Status in plasma-welcome package in Ubuntu:
>   Fix Released
> Status in privacybrowser package in Ubuntu:
>   Invalid
> Status in qmapshack package in Ubuntu:
>   Fix Released
> Status in qutebrowser package in Ubuntu:
>   Fix Released
> Status in rssguard package in Ubuntu:
>   Fix Released
> Status in steam package in Ubuntu:
>   Fix Released
> Status in supercollider package in Ubuntu:
>   Fix Released
> Status in tellico package in Ubuntu:
>   Fix Released
> Status in wike package in Ubuntu:
>   Fix Committed
>
> Bug description:
>   Hi, I run Ubuntu development branch 24.04 and I have a problem with
>   Epiphany browser 45.1-1 (Gnome Web): program doesn't launch, and I get
>   this error
>
>   $ epiphany
>   bwrap: Creating new namespace failed: Permission denied
>
>   ** (epiphany:12085): ERROR **: 14:44:35.023: Failed to fully launch dbus-proxy: Le processus fils s’est terminé avec le code 1
>   Trappe pour point d'arrêt et de trace (core dumped)
>
>   $ epiphany
>   bwrap: Creating new namespace failed: Permission denied
>
>   ** (epiphany:30878): ERROR **: 22:22:26.926: Failed to fully launch dbus-proxy: Le processus fils s’est terminé avec le code 1
>   Trappe pour point d'arrêt et de trace (core dumped)
>
>   Thanks for your help!
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/apparmor/+bug/2046844/+subscriptions
>