[Bug 60857] Unstable display with Radeon 760G (ASUS M4A78L-M LE)

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=60857

--- Comment #5 from Alex Deucher <alexdeucher at gmail.com> ---
(In reply to Stuart Foster from comment #4)
> (In reply to Alex Deucher from comment #3)
> > Can you bisect?  Also just to be sure, the monitor in qestion is connected
> > to the integrated chip, not the dGPU correct?  Does disabling dpm fix the
> > issue?
> 
> The monitor is connected to the integrated chip on the motherboard (760G
> [Radeon 3000]) Disabling dpm does fix the problem (radeon.dpm=0 on lilo
> append line, the patch is still included).

So disabling pdm fixes the issue?  It would be nice to know if it's also fixed
with dpm disabled and without the patch.

> 
> dmesg now reports:
> 
>  [drm] radeon: power management initialized
>  
> as apposed to
> 
>  [drm] radeon: dpm initialized
> 
> There is no mention of any power mangement on the RV516 [Radeon X1300/X1550
> Series] is that correct ?

Correct.  dpm is only supported on r6xx and newer asics.

> 
> The problem is present in vanilla 3.11-rc1.

You mean 3.12-rc1?

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