I think this bug is related to proprietary drivers for ATI video card. Try builtin opensource or newer proprietary. I think it's work for me.
-- after sleep+resume I can't restart the system https://bugs.launchpad.net/bugs/29695 You received this bug notification because you are a member of Ubuntu Bugs, which is a direct subscriber. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs