My reverse bisecting was not proper as the error did not happen every time. Did it again by testing 3 times each time it did not fail. Anyway, I got through the bisecting again, and found a more likely suspect:
2dfc7a391af637b6a820c0ded3964c2b9efd417f is the first bad commit commit 2dfc7a391af637b6a820c0ded3964c2b9efd417f Author: Ondrej Zary <[email protected]> Date: Tue Dec 11 22:18:05 2012 +0100 x86, 8042: Enable A20 using KBC to fix S3 resume on some MSI laptops commit ad68652412276f68ad4fe3e1ecf5ee6880876783 upstream. Some MSI laptop BIOSes are broken - INT 15h code uses port 92h to enable A20 line but resume code assumes that KBC was used. The laptop will not resume from S3 otherwise but powers off after a while and then powers on again stuck with a blank screen. Fix it by enabling A20 using KBC in i8042_platform_init for x86. Fixes https://bugzilla.kernel.org/show_bug.cgi?id=12878 Signed-off-by: Ondrej Zary <[email protected]> Cc: Dmitry Torokhov <[email protected]> Cc: Alan Cox <[email protected]> Cc: Rafael J. Wysocki <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: H. Peter Anvin <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> That is because it mentions black screen behaviour, related to power management, and that I have had troubles with the i8042 module with this laptop before: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/737482 I saw that the commit that fixes the problem is already committed for stable kernel updates for Precise and Quantal, so I guess it is just to wait for the fix on this one (tested that test kernel "linux- image-3.5.7-991-generic" works fine). ** Bug watch added: Linux Kernel Bug Tracker #12878 http://bugzilla.kernel.org/show_bug.cgi?id=12878 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1067548 Title: Restarting hangs To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1067548/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
