* Revert "drm/radeon: only mark audio as connected if the monitor supports it (v3)" causes pink line on Epson projector
@ 2015-07-23 13:09 Hans de Goede
2015-07-23 14:56 ` Alex Deucher
0 siblings, 1 reply; 2+ messages in thread
From: Hans de Goede @ 2015-07-23 13:09 UTC (permalink / raw)
To: Alex Deucher, dri-devel; +Cc: ivan.mitev
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.
Regards,
Hans
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^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Revert "drm/radeon: only mark audio as connected if the monitor supports it (v3)" causes pink line on Epson projector
2015-07-23 13:09 Revert "drm/radeon: only mark audio as connected if the monitor supports it (v3)" causes pink line on Epson projector Hans de Goede
@ 2015-07-23 14:56 ` Alex Deucher
0 siblings, 0 replies; 2+ messages in thread
From: Alex Deucher @ 2015-07-23 14:56 UTC (permalink / raw)
To: Hans de Goede; +Cc: Alex Deucher, ivan.mitev, dri-devel
On Thu, Jul 23, 2015 at 9:09 AM, Hans de Goede <hdegoede@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
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/dri-devel
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/dri-devel
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2015-07-23 13:09 Revert "drm/radeon: only mark audio as connected if the monitor supports it (v3)" causes pink line on Epson projector Hans de Goede
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