The latest v3.7 kernel is now available. Can you test v3.7-rc1 to see if this bug got fixed upstream:
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.7-rc1-quantal/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/903961 Title: Kernel regression.... boot param acpi=off now NEEDED To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/903961/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs