libgl1-mesa-dri 9.1 Causes black stripes (RadeonHD4890 - r770)
Submitted by Rubén Reina
Assigned to Default DRI bug account
I have black stripes in my desktop applications and in lightdm using Ubuntu Precise 12.04 and updated graphic drivers (xf86-video-ati).
Graphic card: Radeon HD 4890 - r770.
Before this didn't happen, it's a new bug.