I'm not sure whether this is new in Saucy, since I got this MacBook Pro only after I had upgraded to Saucy.
I tested with the upstream kernel you specified and the behavior is exactly the same: logging out is very slow, taking perhaps 10 seconds or more. And once again profiling showed lots of time in nouveau_conector_detect() - in fact, this time 41.35% of all CPU time during the entire logout sequence was spent in that function, which seems way high. ** Tags added: kernel-bug-exists-upstream -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1191426 Title: logout is slow, profiling reveals lots of CPU time in nouveau_connector_detect To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1191426/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
