Comment 19 for bug 1079440

OS: Ubuntu 12.10 (Quantal Quetzal).
Version of xserver-xorg-video-intel: 2:2.20.9-0ubuntu2
Computer: HP Mini 110
Video chips: VGA compatible controller: Intel Corporation Mobile 945GSE Express Integrated Graphics Controller (rev 03) and Display controller: Intel Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller (rev 03)

I can set up dual screens and everything works pretty nicely for a while (with the restriction that no resolution above 800x600 can be used on the VGA). However, before long everything freezes up. The mouse pointer can still wander freely across both screens, and I can prove by careful preparation that the keyboard is still sending keys to the selected window. I suspect that the actual event is triggered by a keystroke or mouse movement because it doesn't seem to happen if you just set it up and wait for failure.

Only two things can change the video display. (1) CTL-ALT-F1 blanks the VGA display but then the usual login message is not written to it. (2) the inevitable "press and hold the power button" causes blank screens when the power finally goes off.

Note that this happens with either the installed 12.10 or a live DVD of 12.10. It does not appear to be a problem with Ubuntu 12.04 (tested using a live CD). 12.04 uses xserver-xorg-video-intel version 2:2.17.0-1ubuntu4.

I'd like to try swapping drivers but am unwilling to go down that path without advice.

Thanks.