[REGRESSION] 3.4-rc* radeon: No DVI-A output after commit e00e8b5e760cb

Takashi Iwai tiwai at suse.de
Wed Apr 18 06:19:53 PDT 2012

At Wed, 18 Apr 2012 14:39:54 +0200,
Takashi Iwai wrote:
> Hi,
> I noticed that one machine here gives only the blank output with
> 3.4-rc's.  The bisection lead me to affecting commit:
>     commit e00e8b5e760cbbe9067daeae5454d67c44c8d035
>     Author: Alex Deucher <alexander.deucher at amd.com>
>     Date:   Fri Mar 16 12:22:09 2012 -0400
>     drm/radeon/kms: fix analog load detection on DVI-I connectors
> Reverting this commit helped, it goes back to normal.
> On this system, the VGA monitor is connected to DVI over a VGA-DVI
> connector (and even VGA-switcher).  So, yeah, it's a strange setup.
> But a regression is a regression.

Looking at the commit again, it appears like a simple logic failure.
It should be "&&" instead of "||".


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