That's because of polkit missing configuration allowing to group plugdev to call appropriate dbus method:
hal...@lawn:/home/midenok$ halevt-mount -u /org/freedesktop/Hal/devices/volume_uuid_8067a439_04b7_4964_916d_cd225626f4f2 -p storage2 Mount error for /org/freedesktop/Hal/devices/volume_uuid_8067a439_04b7_4964_916d_cd225626f4f2: DBus Error org.freedesktop.DBus.Error.AccessDenied: Rejected send message, 1 matched rules; type="method_call", sender=":1.14" (uid=110 pid=5520 comm="halevt-mount) interface="org.freedesktop.Hal.Device.Volume" member="Mount" error name="(unset)" requested_reply=0 destination="org.freedesktop.Hal" (uid=0 pid=5302 comm="hald)) -- halevt fails to mount usb-drive https://bugs.launchpad.net/bugs/463392 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs