The kernel was just sync'd with upstream stable 2.6.20. Lots of bug fixes in lib-ata and ACPI. Try it from the daily ISO http://cdimage.ubuntu.com/daily-live/current/ on Monday 4/2. The kernel version must be 2.6.20-14 or higher.
** Changed in: linux-source-2.6.20 (Ubuntu) Assignee: (unassigned) => Tim Gardner Status: Unconfirmed => Needs Info ** Changed in: linux-source-2.6.20 (Ubuntu) Assignee: Tim Gardner => Ubuntu Kernel ACPI Team Status: Needs Info => Confirmed -- powernow-k8 module gets stuck switching power levels on dualcore AMD64 https://launchpad.net/bugs/96592 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs