Comment 2 for bug 122652

My laptop (Dell Inspiron 8600 w/ Mobility Radeon 9600) suffers a similar bug. However, the horizontal lines (seemingly due to wrong Hsync) appear in the middle of the screen (1280x800). I can attach a picture if needed. The screen is also misconfigured at 1024*768. It might be interesting to note that the regression on the horizontal lines happened with one of the latests feisty upgrades (it worked OK by mid february), which has forced me to use fglrx in my laptop. Would installing previous versions of xserver-xorg-video-ati (feisty) help?

On a side note, fresh-booting the Tribe 2 Install CD will give me no DRI, but that's another bug.