Comment 38 for bug 426582

I am having problems with my X31 IBM Thinkpad, and think it may be this bug. (I was referred here from this thread:

http://ubuntuforums.org/showthread.php?p=8416481#post8416481 )

My xorg.conf file is copied at the end of this post, and things work as they should sometimes. If you turn desktop effects off, re-login, and turn them on again then all is fine and the machine works as it should. However, if you logout and login again then you get a series of lines along the top of the screen, which get progressively worse. Turning desktop effects off and on again re-sets it, but it then goes bad again next time you reboot. Forgive me for saying this, but this would imply that it can work, but something is reset when the machine is rebooted which causes this problem - non?

ALSO, whenever the green lines appear (as described above), I find myself unable to select things which are placed on my desktop. Is this a known facet of this problem?

Oli.

P.S. My xorg.conf file is thus:

Section "Device"
 Identifier "Radeon7500"
 Driver "ati"
 BusID "PCI:1:0:0"
EndSection

Section "Device"
 Identifier "Configured Video Device"
 Option "AGPMode" "4" # optional
 Option "AGPSize" "32" # optional
 Option "DRI" "true" # imprtant
 Option "DRI2" "false" # important
 Option "RenderAccel" "true"
 Option "AccelMethod" "XAA"
EndSection

Section "Monitor"
 Identifier "Configured Monitor"
EndSection

Section "Screen"
 Identifier "Default Screen"
 Monitor "Configured Monitor"
 Device "Configured Video Device"
EndSection