[Bug 68571] GPU lockup on AMD Radeon HD6850 with DPM=1

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=68571

--- Comment #9 from Alex Deucher <alexdeucher at gmail.com> ---
(In reply to kilobug from comment #4)
> Sorry, but it seems even worse : I get the "lockup" as often, but it doesn't
> recover from it anymore. Either the system fully freeze after a lockup (with
> garbage on the screen), or it keeps freezing and resetting in loop.
> 

Have you tried this patch from comment 5 of the other bug?
https://bugs.freedesktop.org/attachment.cgi?id=91609


> By switching to VT1 after a freeze I managed to do a dmesg while it was in a
> freeze/reset loop.
> 
> With dpm=0 it works fine on your branch (like it does on the 3.12 or
> 3.13-rc6).
> 
> PS : I get the version string "3.13.0-rc4+" with your branch, is that right
> or did I use the wrong version ? I got it with "git clone
> git://people.freedesktop.org/~agd5f/linux" and then "git checkout
> drm-next-3.14".

Yes, that is correct, it's based on Dave's drm-next branch.

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