My test was wrong (had another instance open with profile disabled) The patch still does not fix the problem with white/black tabs, not rendering any content.
In syslog, I get: Jan 28 02:13:58 lat61 dbus[3005]: apparmor="DENIED" operation="dbus_method_call" bus="session" path="/org/gtk/vfs/mounttracker" interface="org.gtk.vfs.MountTracker" member="ListMountableInfo" mask="send" name=":1.8" pid=19943 label="/usr/lib/firefox/firefox{,*[^s][^h]}" peer_pid=3101 peer_label="unconfined" Jan 28 02:13:58 lat61 kernel: [10694.093307] audit: type=1400 audit(1485566038.221:44093): apparmor="DENIED" operation="open" profile="/usr/lib/firefox/firefox{,*[^s][^h]}" name="/proc/19943/net/arp" pid=19952 comm=4C696E6B204D6F6E69746F72 requested_mask="r" denied_mask="r" fsuid=1000 ouid=0 Jan 28 02:13:59 lat61 dbus[3005]: apparmor="DENIED" operation="dbus_method_call" bus="session" path="/org/gtk/vfs/mounttracker" interface="org.gtk.vfs.MountTracker" member="ListMountableInfo" mask="send" name=":1.8" pid=19985 label="/usr/lib/firefox/firefox{,*[^s][^h]}" peer_pid=3101 peer_label="unconfined" Jan 28 02:14:32 lat61 dbus[3005]: apparmor="DENIED" operation="dbus_method_call" bus="session" path="/org/gtk/vfs/mounttracker" interface="org.gtk.vfs.MountTracker" member="ListMountableInfo" mask="send" name=":1.8" pid=20044 label="/usr/lib/firefox/firefox{,*[^s][^h]}" peer_pid=3101 peer_label="unconfined" Jan 28 02:14:33 lat61 kernel: [10729.374780] audit: type=1400 audit(1485566073.502:44094): apparmor="DENIED" operation="mknod" profile="/usr/lib/firefox/firefox{,*[^s][^h]}" name="/dev/shm/org.chromium.35D9xE" pid=20044 comm=57656220436F6E74656E74 requested_mask="c" denied_mask="c" fsuid=1000 ouid=1000 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1659988 Title: Firefox apparmor profile: /usr/bin/python3: error while loading shared libraries: cannot apply additional memory protection after relocation: Permission denied To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1659988/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs