I installed ubuntu-12.10-desktop-amd64.iso into a usb disk on a non- haswell machine, then update kernel to a version which support i915-hsw, then use this usb disk to boot on a haswell machine, the ubuntu-12.10 can be successfully booted up.
Then i plugged a VGA to the machine test video switching, this problem can be reproduced. After upgrade xserver-xorg-video-intel to 2:2.20.9-0ubuntu2.3, the problem disappeared. So the xserver-xorg-video-intel for quantal was verified to be functional. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1202524 Title: [lts] Switch VGA mode will become black screen Status in HWE Next Project: In Progress Status in OEM Priority Project: Invalid Status in “xserver-xorg-video-intel” package in Ubuntu: Fix Released Status in “xserver-xorg-video-intel-lts-quantal” package in Ubuntu: Triaged Status in “xserver-xorg-video-intel-lts-raring” package in Ubuntu: Fix Released Status in “xserver-xorg-video-intel” source package in Precise: New Status in “xserver-xorg-video-intel-lts-quantal” source package in Precise: Fix Released Status in “xserver-xorg-video-intel-lts-raring” source package in Precise: Fix Released Status in “xserver-xorg-video-intel” source package in Quantal: Fix Committed Status in “xserver-xorg-video-intel-lts-quantal” source package in Quantal: Invalid Status in “xserver-xorg-video-intel” source package in Raring: Fix Released Status in “xserver-xorg-video-intel-lts-raring” source package in Raring: Invalid Bug description: [Impact] system hang in a common use-case with external monitor [Test case] hit the hotkey combo to switch modes and it'll hang [Regression potential] slim, this has been upstream for some time now -- On a lenovo notebook running precise with quantal LTS stack has this issue. When connecting through VGA port, laptop monitor and external monitor will enter extend mode. But after pressing FN+F3 to switching mode, both laptop monitor and external monitor will become black screen, and system is hang, you need to force to power off. When connecting external monitor through HDMI, everything is OK. CPU: Intel(R) Core(TM) i3-4000M CPU @ 2.40GHz GPU: Intel Corporation Haswell Integrated Graphics Controller [8086:0416] To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1202524/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
