https://bugs.freedesktop.org/show_bug.cgi?id=66963
--- Comment #155 from Paul Bodenbenner paul.bodenbenner@gmail.com --- (In reply to comment #153)
I've got quite a few r6xx cards, however, all of the cards I have access to work fine with dpm. Unfortunately, r6xx cards are five generations old, so it's much harder to find people that remember or documents describing the details and quirks of dpm on these asics so even if I managed to get a problematic card, I'm not sure how much luck I'd have.
Ok, thanks for the clarification!
(In reply to comment #154)
With the people getting hangs and GPU resets, with DPM on: are you using KDE or GNOME?
I've noticed problems with KDE and the rv6xx and sometimes doing a soft power cycle of laptop will result in the display hanging when it attempts to set up kernel mode setting (KMS).
I am not sure if there are also hangs, but I'm using GNOME Shell 3.10 by getting my previous described failures. Also I have to use "acpi_sleep=nonvs" as kernel parameter, otherwise system will reboot immediately instead of "trying" to wake up. With catalyst driver this worked well though.