linux-kernel - Re: [linux-next] DDC responded, but no EDID for %s errors

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Date:   Thu, 6 Sep 2018 11:42:43 +0900
From:   Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>
To:     Ben Skeggs <bskeggs@...hat.com>, David Airlie <airlied@...ux.ie>
Cc:     dri-devel@...ts.freedesktop.org, nouveau@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>
Subject: Re: [linux-next] DDC responded, but no EDID for %s errors

On (08/02/18 11:46), Sergey Senozhatsky wrote:
> Hi,
> 
> My dmesg is filled up with these errors
> 
>  nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for HDMI-A-1
>  nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
>  nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for HDMI-A-1
>  nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
>  nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
> [..]
>  nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
>  nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
>  nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
>  nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
>  nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
>  nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
> [..]
> 
> Basically, a message every 10s or so. Any chance we can make them
> go away?

A gentle ping?

It literally floods my logbuf with that "DRM: DDC responded, but no EDID
for VGA-1" thing.

name -a
4.19.0-rc2-dbg-00118-gb9a3bad8af2d

$ dmesg | tail -42
[ 3615.796938] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
[ 3626.036865] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
[ 3636.276878] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
[ 3646.516866] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
[ 3656.756750] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
[ 3666.996949] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
[ 3677.236884] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
[ 3687.476865] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
[ 3697.716858] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
[ 3707.956934] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
[ 3718.196925] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
[ 3728.436884] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
[ 3738.676861] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
[ 3748.916731] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
[ 3759.156754] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
[ 3769.396861] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
[ 3779.636826] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
[ 3789.876892] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
[ 3800.116686] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
[ 3810.356926] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
[ 3820.596887] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
[ 3830.836909] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
[ 3841.076932] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
[ 3851.316681] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
[ 3861.556926] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
[ 3871.796869] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
[ 3882.036750] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
[ 3892.276836] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
[ 3902.516803] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
[ 3912.756640] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
[ 3922.996957] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
[ 3933.236700] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
[ 3943.476851] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
[ 3953.716928] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
[ 3963.956915] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
[ 3974.196861] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
[ 3984.436928] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
[ 3994.676885] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
[ 4004.917030] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
[ 4015.156935] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
[ 4025.396872] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1
[ 4035.636877] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for VGA-1

	-ss