[Bug 44772] Radeon HD6950 (Cayman): Resuming from hibernation fails sometimes

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https://bugs.freedesktop.org/show_bug.cgi?id=44772

--- Comment #6 from Harald Judt <h.judt@xxxxxx> 2012-03-20 11:15:35 PDT ---
The bug is still present with kernel-3.3 final.

Further tests confirm that this is an issue specific to the HD6950 card. I
swapped the card with a Radeon HD3650 (RV635 chipset) for testing while leaving
the rest of the system configuration unchanged, and the problem was no longer
reproducible and hibernating and resuming worked fine.

If I change the power profile back from low to default, sometimes the system
will freeze immediately when hibernating. Maybe some registers still don't get
initialized/updated properly?

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