Public bug reported:
I am reporting a regression on the Ubuntu 26.04 development branch.
Following a major system update yesterday, snaps are no longer able to
access audio hardware and system services (DBus), despite the hardware
being fully functional in the host system.
Detailed Symptoms:
Snaps (specifically Brave and Firefox) do not list any audio input or
output devices in their settings or in WebRTC applications.
The system settings (GNOME) correctly recognize and test all connected
audio hardware.
Manual snap connect commands for pulseaudio, audio-record, and camera do
not resolve the issue.
Technical Evidence (Logs):
When launching browsers via the terminal, the following AppArmor denials are
observed:
ERROR:dbus/object_proxy.cc:572] Failed to call method:
org.freedesktop.Secret.Service.ReadAlias:
org.freedesktop.DBus.Error.AccessDenied: An AppArmor policy prevents this
sender from sending this message to this recipient; label="snap.brave.brave
(enforce)"
The portals also report failures:
xdg-desktop-portal-WARNING: Failed to create background monitor: Failed to own
background monitor D-Bus name
Verification:
The issue appeared immediately after yesterday's system upgrade. Installing the
.deb version of the same applications resolves the issue, confirming that the
underlying sound system (PipeWire/WirePlumber) and drivers are working
correctly. The failure is strictly caused by the snap confinement/AppArmor
profiles on the current dev branch.
Environment:
OS: Ubuntu 26.04 (dev branch)
Status: Issue occurred after major update on 2026-03-11.
** Affects: snapd (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2143992
Title:
AppArmor denies audio and secret service access for snaps (Ubuntu
26.04)
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