Neither a gdm bug nor a a real suspend/hibernate bug, but a bug with network startup time: https://launchpad.net/distros/ubuntu/+source /gnome-power-manager/+bug/9138
Seems that network startup is now in the critical boot path and stalls suspend/hibernate this way. ** Changed in: gdm (Ubuntu) Status: Needs Info => Rejected -- Can't suspend/hibernate second time https://launchpad.net/bugs/76925 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs