From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 60857] Unstable display with Radeon 760G (ASUS M4A78L-M LE)
Date: Thu, 05 Sep 2013 17:53:20 +0000
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https://bugzilla.kernel.org/show_bug.cgi?id=60857
--- Comment #6 from Stuart Foster ---
(In reply to Alex Deucher from comment #5)
> (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?
No having found that turning dpm off fixed the problem I went back to the first
3.11-rc which introduced the radeon dpm code.
The problem is fixed with the patch removed and with dpm turn off.
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