This is very simple to reproduce: In yakkety:
sudo apt install dbus-user-session empathy
Restart the session (or reboot), start empathy. It fails with "Error contacting the account manager", and dmesg shows several
[ 63.960358] audit: type=1400 audit(1469458539.595:27): apparmor="DENIED" operation="connect" profile="/usr/lib/telepathy/mission-control-5" name="/run/user/1000/bus" pid=4563 comm="mission-control" requested_mask="wr" denied_mask="wr" fsuid=1000 ouid=1000
This is very simple to reproduce: In yakkety:
sudo apt install dbus-user-session empathy
Restart the session (or reboot), start empathy. It fails with "Error contacting the account manager", and dmesg shows several
[ 63.960358] audit: type=1400 audit(146945853 9.595:27) : apparmor="DENIED" operation="connect" profile= "/usr/lib/ telepathy/ mission- control- 5" name="/ run/user/ 1000/bus" pid=4563 comm="mission- control" requested_mask="wr" denied_mask="wr" fsuid=1000 ouid=1000