i have the same problem. same workaround works. 12.04 64bit kernel 3.2.0-17 x.org 1.11.3 fglrx 2:8.911-0ubuntu2 GPU radeon HD4250
i have the same problem. same workaround works.
12.04 64bit
kernel 3.2.0-17
x.org 1.11.3
fglrx 2:8.911-0ubuntu2
GPU radeon HD4250