ok, my "workaround" described in #5 works without removing the power cable and seems to be desktop independent. Just go to sleep (suspend to RAM) twice and the problem is gone. Tested with LXDE and KDE on Kubuntu Natty.
Any hints about how to narrow down, what does change with the second sleep and awake procedure? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/711284 Title: After natty update today, system is unresponsive and freezes often -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
