Comment 22 for bug 398026

Chris and Oded, it's good that the corruption is gone, but the frequency should not change sporadically as at least Oded is reporting. Unless told otherwise, the driver should choose the frequency of the preferred EDID mode, and as far as I can see this is 50 Hz for Chris and 60 Hz for Oded. It would be nice if you could help troubleshooting this even though the corruption caused by the wrong frequency is gone.