Comment 39 for bug 1309025

Ok, so after spending some more time on it with Serge, we found and fixed a few problems with the cgmanager patch for systemd-logind. Pretty much each of the fixes could explain what we've been seeing, so hopefully this will be the end of it (combined with the cgmanager fix from Michael Terry which already landed in both utopic and trusty).

I'm removing the cgmanager task as I believe this side has now been separately fixed and am tracking these bugfixes for trusty and utopic now.