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.
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https://bugs.launchpad.net/bugs/820881
Title:
[i945] Heavy screen and font corruption when free memory is low on
GMA950
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