So I tested Linux Kernel 3.8.2 from mainline for a while and it seems like this bug is gone now. I had to install proprietary NVIDIA drivers to get anything else than a black display after suspend but that problem is already report as https://bugs.launchpad.net/nouveau/+bug/1111884.
Kernel 3.8.2 seems to fix this bug for me. ** Tags added: kernel-fixed-upstream ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1117659 Title: "Graphical freeze" or extrem slowdown To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1117659/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs