https://bugs.freedesktop.org/show_bug.cgi?id=91880
--- Comment #61 from Julian jsbansen@gmail.com --- (In reply to Alex Deucher from comment #60)
Can you see if disabling different dpm options helps? Try to narrow down which one(s) are problematic. E.g., this patch will disable all of them.
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So, I've never done this before but I managed to recompile the kernel with the attached patch and boot from it.
I've been running on the performance_level auto setting for about an hour now and haven't encountered the freeze. I'll be using it for a few hours tomorrow to make sure but considering it usually takes only ~20 minutes to freeze, I'd consider this version fixed.
On this note, I guess there are ways to apply a patch to the radeon driver without recompiling the whole kernel? That'd make things less time-consuming.