This is fixed in the upstream 3.5 kernel. From the changelog: author Zhang Rui Mon, 20 Feb 2012 06:20:06 +0000 (14:20 +0800) committer Len Brown Tue, 5 Jun 2012 04:16:12 +0000 (00:16 -0400) commit 76eb9a30db4bc8fd172f9155247264b5f2686d7b tree 50da04a2a05f779e19cac7d0b52155797b82f772 parent 9f132652d94c96476b0b0a8caf0c10e96ab10fa8
ACPI, x86: fix Dell M6600 ACPI reboot regression via DMI Dell Precision M6600 is known to require PCI reboot, so add it to the reboot blacklist in pci_reboot_dmi_table[]. https://bugzilla.kernel.org/show_bug.cgi?id=42749 cc: x86 at kernel.org Signed-off-by: Zhang Rui Signed-off-by: Len Brown ** Bug watch added: Linux Kernel Bug Tracker #42749 http://bugzilla.kernel.org/show_bug.cgi?id=42749 ** Changed in: linux (Ubuntu) Status: Confirmed => Fix Committed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/841264 Title: Dell Precision M6600 laptop hangs on reboot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/841264/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs