[Bug 305647] [NEW] Corrupted screen on gdm shutdown for 8086:2e02

[Bryce Harrington]

Public bug reported:

Binary package hint: xserver-xorg-video-intel

Noticed this corrupt screen (quite beautiful though!) when shutting down
gdm.  I've been seeing a lot of different corrupt screens when vt
switching, logging in and out, restarting gdm, etc.  This is just one
example.

00:02.0 VGA compatible controller [0300]: Intel Corporation 4 Series Chipset Integrated Graphics Controller [8086:2e02] (r
ev 03)
	Subsystem: Intel Corporation 4 Series Chipset Integrated Graphics Controller [8086:2e02]

00:00.0 Host bridge [0600]: Intel Corporation 4 Series Chipset DRAM Controller [8086:2e00] (rev 03)
	Subsystem: Intel Corporation 4 Series Chipset DRAM Controller [8086:2e00]

No obvious errors in Xorg.0.log.  Saw this in :0.log:

error setting MTRR (base = 0xd0000000, size = 0x10000000, type = 1)
Invalid argument (22)

Despite showing a corrupted screen, I notice that X is not running, so I
wonder if the gdm shutdown is simply leaving me at the wrong vt?  I can
restart X okay

** Affects: xserver-xorg-video-intel (Ubuntu)
     Importance: High
         Status: Triaged

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Corrupted screen on gdm shutdown for 8086:2e02
https://bugs.launchpad.net/bugs/305647
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