Sitsofe,

I experience this problem in Oneiric:

cat /proc/version
Linux version 3.0.0-19-generic (buildd@vernadsky) (gcc version 4.6.1 
(Ubuntu/Linaro 4.6.1-9ubuntu3) ) #33-Ubuntu SMP Thu Apr 19 19:05:57 UTC 2012

dpkg -l | grep xserver-xorg\ 
ii  xserver-xorg                                                
1:7.6+7ubuntu7.1                        X.Org X server

dpkg -l | grep intel
ii  libdrm-intel1                                               2.4.26-1ubuntu1 
                        Userspace interface to intel-specific kernel DRM 
services -- runtime
ii  xserver-xorg-video-intel                                    
2:2.15.901-1ubuntu2.1                   X.Org X server -- Intel i8xx, i9xx 
display driver

lspci -nn | grep VGA
00:02.0 VGA compatible controller [0300]: Intel Corporation 82945G/GZ 
Integrated Graphics Controller [8086:2772] (rev 02)
cat /proc/version

I can easily reproduce the problem instantly after boot when running
bonnie++ benchmarks while switching between multiple X servers via
Ctrl/Alt F7-F12, given the following lightdm config (I am logged into
one session and the other sessions just show the greeter):

cat /etc/lightdm/lightdm.conf

[LightDM]
greeter-user=lightdm
seats=Seat:0 Seat:1 Seat:2 Seat:3

[SeatDefaults]
allow-guest=false
greeter-hide-users=true
greeter-session=lightdm-gtk-greeter
user-session=xubuntu

[Seat:0]
user-session=xubuntu
autologin-user=

[Seat:1]
user-session=xubuntu
autologin-user=

[Seat:2]
user-session=xubuntu
autologin-user=

[Seat:3]
user-session=xubuntu
autologin-user=

[Seat:4]
user-session=xubuntu
autologin-user=

[Seat:5]
user-session=xubuntu
autologin-user=

[XDMCPServer]
enabled=true

In case I swapoff -a before starting the test, then the problem seems to
be gone though.

-- 
You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xserver-xorg-video-intel in Ubuntu.
https://bugs.launchpad.net/bugs/820881

Title:
  [i945] Heavy screen and font corruption when free memory is low on
  GMA950

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/820881/+subscriptions

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