https://bugs.freedesktop.org/show_bug.cgi?id=56139
--- Comment #43 from Alex Deucher agd5f@yahoo.com --- (In reply to comment #42)
Going fishing: Alex, you said you were unable to reproduce this bug with your cayman device. Could it be related to the display connector? I'm using the DVI connector from my card and it is connected to a VGA connector on my monitor through a DVI -> VGA adaptor. I may be able to test with a different monitor/connector if you think this could be related.
You can try , but I doubt it will make a difference. It seem to be related to the display controllers and access to memory when we make changes to the MC, so the connector type shouldn't matter.