I have the same problem on my Samsung R65. The instructions from https://bugs.launchpad.net/bugs/190414 did not help. I fixed the problem by reinstalling the -generic kernel like Joe suggested:
"sudo apt-get install --reinstall linux-image-2.6.24-12-generic linux- restricted-modules-2.6.24-12-generic linux-ubuntu- modules-2.6.24-12-generic" I ran "sudo apt-get dist-upgrade" before to see if I had the latest kernel installed and there were no updates available so this was really no upgrade but just a reinstallation. -- -generic image fails to boot with "clocksource tsc unstable" https://bugs.launchpad.net/bugs/194060 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs