Revert "drm/radeon: only mark audio as connected if the monitor supports it (v3)" causes pink line on Epson projector

[Alex Deucher]

On Thu, Jul 23, 2015 at 9:09 AM, Hans de Goede <hdegoede at redhat.com> wrote:
> Hi Alex,
>
> I believe that the revert of "drm/radeon: only mark audio as connected
> if the monitor supports it (v3)" causes issues with some projectors
> which used to work before, see:
>
> https://bugzilla.redhat.com/show_bug.cgi?id=1236337
>
> The user reports that going from 4.0.5 to 4.0.3 fixes this, and 4.0.5
> is the release where the revert landed. I've inspected the EDID of
> the projector and drm_detect_monitor_audio() should return false
> for it.
>
> Adding radeon.audio=0 to the kernel cmdline fixes the pink line.

There's a possible fix for testing here:
https://bugzilla.kernel.org/show_bug.cgi?id=93701

Alex

>
> Regards,
>
> Hans
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