[Bug 91743] New: Desktop corruption when changing monitor config

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91743

            Bug ID: 91743
           Summary: Desktop corruption when changing monitor config
           Product: xorg
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/intel
          Assignee: chris at chris-wilson.co.uk
          Reporter: seb128 at ubuntu.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org

The bug has been reported on
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1421575

"Thinkpad X220 running vivid up to date.

Usually sits in docking station with external monitor.

Today I ran the laptop outside the docking station, and plugged it into the
dock while running (which worked fine forever on utopic) but today it now
freaks out.

I deleted ~/.config/monitors.xml to reset my display config

I restarted and logged in with both monitors active.

As soon as I change the display config doing the display corrupts, flickers and
becomes unusable.

Here's a photo:- http://imgur.com/80LcmgV

GraphicsCard:
 Intel Corporation 2nd Generation Core Processor Family Integrated Graphics
Controller [8086:0126] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Lenovo Device [17aa:21da]
"


xorg log, https://launchpadlibrarian.net/197510967/XorgLog.txt

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