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 Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1202524 Title: [lts] Switch VGA mode will become black screen To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1202524/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
