A patch which might fix this issue, too, is available at 1659988. https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1659988
Everyone affected, please give it a try and report back. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to firefox in Ubuntu. https://bugs.launchpad.net/bugs/1553712 Title: usr.bin.firefox apparmor profile blocks access to mounttracker Status in firefox package in Ubuntu: Confirmed Bug description: When I launch Firefox with apparmor enabled, I get the following errors: Mar 6 13:21:19 tigreraye dbus[2570]: apparmor="DENIED" operation="dbus_method_call" bus="session" path="/org/gtk/vfs/mounttracker" interface="org.gtk.vfs.MountTracker" member="ListMountableInfo" mask="send" name=":1.46" pid=6604 label="/usr/lib/firefox/firefox{,*[^s][^h]}" peer_pid=2781 peer_label="unconfined" Mar 6 17:31:04 tigreraye dbus[4030]: apparmor="DENIED" operation="dbus_method_call" bus="session" path="/org/gtk/Private/RemoteVolumeMonitor" interface="org.gtk.Private.RemoteVolumeMonitor" member="IsSupported" mask="send" name=":1.71" pid=4480 label="/usr/lib/firefox/firefox{,*[^s][^h]}" peer_pid=4327 peer_label="unconfined" Mar 6 17:31:04 tigreraye dbus[4030]: apparmor="DENIED" operation="dbus_method_call" bus="session" path="/org/gtk/vfs/mounttracker" interface="org.gtk.vfs.MountTracker" member="ListMounts" mask="send" name=":1.43" pid=4480 label="/usr/lib/firefox/firefox{,*[^s][^h]}" peer_pid=4206 peer_label="unconfined" Mar 6 17:31:04 tigreraye dbus[4030]: apparmor="DENIED" operation="dbus_method_call" bus="session" path="/org/gtk/vfs/mounttracker" interface="org.gtk.vfs.MountTracker" member="LookupMount" mask="send" name=":1.43" pid=4480 label="/usr/lib/firefox/firefox{,*[^s][^h]}" peer_pid=4206 peer_label="unconfined" Mar 6 18:47:12 tigreraye dbus[4030]: apparmor="DENIED" operation="dbus_method_call" bus="session" path="/org/gtk/Private/RemoteVolumeMonitor" interface="org.gtk.Private.RemoteVolumeMonitor" member="List" mask="send" name=":1.76" pid=13082 label="/usr/lib/firefox/firMar 6 19:31:11 tigreraye dbus[4030]: apparmor="DENIED" operation="dbus_signal" bus="session" path="/org/gtk/Private/RemoteVolumeMonitor" interface="org.gtk.Private.RemoteVolumeMonitor" member="DriveChanged" name=":1.49" mask="receive" pid=13082 label="/usr/lib/firefox/firefox{,*[^s][^h]}" peer_pid=4246 peer_label="unconfined" Mar 6 19:32:10 tigreraye dbus[4030]: apparmor="DENIED" operation="dbus_signal" bus="session" path="/org/gtk/Private/RemoteVolumeMonitor" interface="org.gtk.Private.RemoteVolumeMonitor" member="VolumeAdded" name=":1.49" mask="receive" pid=13082 label="/usr/lib/firefox/firefox{,*[^s][^h]}" peer_pid=4246 peer_label="unconfined" efox{,*[^s][^h]}" peer_pid=4333 peer_label="unconfined" Mar 6 19:43:24 tigreraye dbus[4030]: apparmor="DENIED" operation="dbus_signal" bus="session" path="/org/gtk/Private/RemoteVolumeMonitor" interface="org.gtk.Private.RemoteVolumeMonitor" member="MountPreUnmount" name=":1.49" mask="receive" pid=13082 label="/usr/lib/firefox/firefox{,*[^s][^h]}" peer_pid=4246 peer_label="unconfined" Mar 6 19:43:24 tigreraye dbus[4030]: apparmor="DENIED" operation="dbus_signal" bus="session" path="/org/gtk/Private/RemoteVolumeMonitor" interface="org.gtk.Private.RemoteVolumeMonitor" member="VolumeChanged" name=":1.49" mask="receive" pid=13082 label="/usr/lib/firefox/firefox{,*[^s][^h]}" peer_pid=4246 peer_label="unconfined" Mar 6 19:43:24 tigreraye dbus[4030]: apparmor="DENIED" operation="dbus_signal" bus="session" path="/org/gtk/Private/RemoteVolumeMonitor" interface="org.gtk.Private.RemoteVolumeMonitor" member="MountChanged" name=":1.49" mask="receive" pid=13082 label="/usr/lib/firefox/firefox{,*[^s][^h]}" peer_pid=4246 peer_label="unconfined" Mar 6 19:43:24 tigreraye dbus[4030]: apparmor="DENIED" operation="dbus_signal" bus="session" path="/org/gtk/Private/RemoteVolumeMonitor" interface="org.gtk.Private.RemoteVolumeMonitor" member="MountRemoved" name=":1.49" mask="receive" pid=13082 label="/usr/lib/firefox/firefox{,*[^s][^h]}" peer_pid=4246 peer_label="unconfined" Mar 6 19:43:25 tigreraye dbus[4030]: apparmor="DENIED" operation="dbus_signal" bus="session" path="/org/gtk/Private/RemoteVolumeMonitor" interface="org.gtk.Private.RemoteVolumeMonitor" member="VolumeRemoved" name=":1.49" mask="receive" pid=13082 label="/usr/lib/firefox/firefox{,*[^s][^h]}" peer_pid=4246 peer_label="unconfined" Mar 6 19:43:28 tigreraye dbus[4030]: apparmor="DENIED" operation="dbus_signal" bus="session" path="/org/gtk/Private/RemoteVolumeMonitor" interface="org.gtk.Private.RemoteVolumeMonitor" member="DriveDisconnected" name=":1.49" mask="receive" pid=13082 label="/usr/lib/firefox/firefox{,*[^s][^h]}" peer_pid=4246 peer_label="unconfined" Mar 6 19:43:35 tigreraye dbus[4030]: apparmor="DENIED" operation="dbus_signal" bus="session" path="/org/gtk/Private/RemoteVolumeMonitor" interface="org.gtk.Private.RemoteVolumeMonitor" member="DriveConnected" name=":1.49" mask="receive" pid=13082 label="/usr/lib/firefox/firefox{,*[^s][^h]}" peer_pid=4246 peer_label="unconfined" Mar 6 19:53:42 tigreraye dbus[4030]: apparmor="DENIED" operation="dbus_signal" bus="session" path="/org/gtk/Private/RemoteVolumeMonitor" interface="org.gtk.Private.RemoteVolumeMonitor" member="MountAdded" name=":1.49" mask="receive" pid=13082 label="/usr/lib/firefox/firefox{,*[^s][^h]}" peer_pid=4246 peer_label="unconfined" Mar 6 20:57:28 tigreraye dbus[4030]: apparmor="DENIED" operation="dbus_signal" bus="session" path="/org/gtk/vfs/mounttracker" interface="org.gtk.vfs.MountTracker" member="Mounted" name=":1.43" mask="receive" pid=13082 label="/usr/lib/firefox/firefox{,*[^s][^h]}" peer_pid=4206 peer_label="unconfined" Adding the following lines to the apparmor profile fixes the issue: dbus send bus=session path="/org/gtk/vfs/mounttracker" interface="org.gtk.vfs.MountTracker" member="ListMountableInfo", dbus send bus=session path="/org/gtk/vfs/mounttracker" interface="org.gtk.vfs.MountTracker" member="ListMounts", dbus send bus=session path="/org/gtk/vfs/mounttracker" interface="org.gtk.vfs.MountTracker" member="LookupMount", dbus receive bus=session path="/org/gtk/vfs/mounttracker" interface="org.gtk.vfs.MountTracker" member="Mounted", dbus send bus=session path="/org/gtk/Private/RemoteVolumeMonitor" interface="org.gtk.Private.RemoteVolumeMonitor" member="IsSupported", dbus send bus=session path="/org/gtk/Private/RemoteVolumeMonitor" interface="org.gtk.Private.RemoteVolumeMonitor" member="List", dbus receive bus=session path="/org/gtk/Private/RemoteVolumeMonitor" interface="org.gtk.Private.RemoteVolumeMonitor" member="DriveChanged", dbus receive bus=session path="/org/gtk/Private/RemoteVolumeMonitor" interface="org.gtk.Private.RemoteVolumeMonitor" member="DriveDisconnected", dbus receive bus=session path="/org/gtk/Private/RemoteVolumeMonitor" interface="org.gtk.Private.RemoteVolumeMonitor" member="DriveConnected", dbus receive bus=session path="/org/gtk/Private/RemoteVolumeMonitor" interface="org.gtk.Private.RemoteVolumeMonitor" member="VolumeAdded", dbus receive bus=session path="/org/gtk/Private/RemoteVolumeMonitor" interface="org.gtk.Private.RemoteVolumeMonitor" member="VolumeRemoved", dbus receive bus=session path="/org/gtk/Private/RemoteVolumeMonitor" interface="org.gtk.Private.RemoteVolumeMonitor" member="VolumeChanged", dbus receive bus=session path="/org/gtk/Private/RemoteVolumeMonitor" interface="org.gtk.Private.RemoteVolumeMonitor" member="MountPreUnmount", dbus receive bus=session path="/org/gtk/Private/RemoteVolumeMonitor" interface="org.gtk.Private.RemoteVolumeMonitor" member="MountChanged", dbus receive bus=session path="/org/gtk/Private/RemoteVolumeMonitor" interface="org.gtk.Private.RemoteVolumeMonitor" member="MountRemoved", dbus receive bus=session path="/org/gtk/Private/RemoteVolumeMonitor" interface="org.gtk.Private.RemoteVolumeMonitor" member="MountAdded", To manage notifications about this bug go to: 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