Description of Problem: I have a ThinkPad A31 with a ATI Radeon Mobility M7 (ID: 1002:4c57) which works beautifully when you first start X or the installer. But if you want long enough to allow the screen to blank, when you recover, you start getting this really random display pattern. Lines are shooting all over the place and you can barely make out parts of the screen, but it's constantly moving as well. Pretty odd. Version-Release number of selected component (if applicable): How Reproducible: Steps to Reproduce: 1. 2. 3. Actual Results: Expected Results: Additional Information:
This sounds like an APM problem. Can you disable APM entirely to test this? Only allow DPMS to work and without APM enabled. Does it work now?
ping
Looks like dublicate to bug #70780
*** This bug has been marked as a duplicate of 70780 ***