Comment 43 for bug 383345

There is some confusion in here by a few of the other posters (not the original reporter that knows about the limitation). The 2048x2048 3D texture limitation is a _hardware_ limitation, it has never worked under compiz with a virtual above 2048x2048 on intel chip older than 965. It used to be possible to use higher virtual sizes if you removed accel support but that has been broken under KMS since it came out. Try booting with i915.modeset=0 added to grub until the patch supporting it under KMS lands Lucien, it should still be possible to use >2048 virtual sizes (without accel) under UMS with the git20090702 driver thats currently in karmic.