[Bug 58594] New: Dual Monitor eventually freezes

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=58594

          Priority: medium
            Bug ID: 58594
          Assignee: chris at chris-wilson.co.uk
           Summary: Dual Monitor eventually freezes
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: zismylaptop at gmail.com
          Hardware: x86 (IA32)
            Status: NEW
           Version: unspecified
         Component: Driver/intel
           Product: xorg

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.

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