Adding the following rule to /var/lib/snapd/apparmor/profiles/snap.chromium.chromium and reloading the profile is enough to fix the problem:
/run/user/[0-9]*/.mutter-Xwaylandauth.* r, ** Description changed: (initially reported by Laney on IRC) I upgraded my eoan VM with silo 3762¹ which contains the gnome 3.33.90 update, and after logging out and back into a Wayland session, the chromium snap fails to start: - $ chromium - No protocol specified - (chrome:1917): Gtk-WARNING **: 16:08:39.262: cannot open display: :0 + $ chromium + No protocol specified + (chrome:1917): Gtk-WARNING **: 16:08:39.262: cannot open display: :0 I'm seeing the following denial in the journal: - name="/run/user/1000/.mutter-Xwaylandauth-5J7F6Z", + name="/run/user/1000/.mutter-Xwaylandauth.5J7F6Z", requested_mask="r", denied_mask="r" - - ¹ https://launchpad.net/~ci-train-ppa-service/+archive/ubuntu/3762/+packages + ¹ https://launchpad.net/~ci-train-ppa- + service/+archive/ubuntu/3762/+packages -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1840925 Title: [snap] chromium doesn't start under Wayland with GNOME 3.33 To manage notifications about this bug go to: https://bugs.launchpad.net/snapd/+bug/1840925/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs