I bisected the kernel and was able to bisect the problem to the commit ee1ca48fae7e575d5e399d4fdcfe0afc1212a64c. After reverting this commit in 2.6.31-15.50, it works fine.
-- ACPI: After an upgrade to Karmic, the system hangs on boot https://bugs.launchpad.net/bugs/481765 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
