I could fix this using kernel 2.6.34-020634rc6 from http://kernel.ubuntu.com/~kernel-ppa/mainline/v2.6.34-rc6-lucid/ (see bug #541502, comment 32). The test kernel mentioned here in comment 78 did not fix this problem.
System: Thinkpad T60, ATI Mobility Radeon X1400
I could fix this using kernel 2.6.34-020634rc6 from http:// kernel. ubuntu. com/~kernel- ppa/mainline/ v2.6.34- rc6-lucid/ (see bug #541502, comment 32). The test kernel mentioned here in comment 78 did not fix this problem.
System: Thinkpad T60, ATI Mobility Radeon X1400