Comment 11 for bug 216908

It didn't fix my problem. My PC do not shutdown and freeze on the last screen (with a lot of error on network-manager)

see details on my post her
https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/205482/comments/8

Do all those bugs have same causes ? (most look like can shutdown)
Bug #205482
Bug #216870
and maybe some of these
Bug #44874
Bug #138691
Bug #138794
Bug #161945
Bug #190312
Bug #200622