linux-kernel - Re: Screen corruption with second monitor

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Message-ID: <CANL0fFSZWVKELUC2xaXHXcWn2tLNSUE-kbUR6WovuiJSuJG=8Q@mail.gmail.com>
Date: Sun, 30 Mar 2025 17:57:25 +0200
From: Gonsolo <gonsolo@...il.com>
To: lyude@...hat.com, dakr@...nel.org, airlied@...il.com, simona@...ll.ch, 
	dri-devel@...ts.freedesktop.org, nouveau@...ts.freedesktop.org, 
	linux-kernel@...r.kernel.org
Subject: Re: Screen corruption with second monitor

Update:
Sleeping with two working monitors also corrupts the second monitor.

Am So., 30. März 2025 um 17:54 Uhr schrieb Gonsolo <gonsolo@...il.com>:
>
> Hi!
>
> Second try without attachment.
> Youtube link of screen: https://youtu.be/zVbuzxECinI
>
> Am So., 30. März 2025 um 17:30 Uhr schrieb Gon Solo <gonsolo@...il.com>:
> >
> > Hi!
> >
> > I bought a Displayport-to-HDMI cable to connect a second monitor to my
> > NVIDIA 3060 12GB with three Displayport and one HDMI outputs.
> > The first monitor is connected via the only HDMI output.
> > The (second) monitor via on DP-HDMI flickers and has vertical stripes (see the
> > attached video). I'm running the latest Arch with Nouveau and NVK.
> > The first monitor is attached via
> > Kernel 6.13.8-arch1-1
> > Mesa 25.0.2
> >
> > I think it's the driver's fault because
> > a) console works, flickering starts with the graphical console,
> > b) on Windows it works,
> > c) with NVIDIA (nvidia-open, nvidia-utils) drivers it works,
> > d) booting with just the second monitor (Displayport-HDMI) works, and
> > e) funny enough, booting with just the second monitor, and plugging in the first one
> > later also works.
> >
> > So my guess would be, there's something not working with Nouveau's handling of
> > the second screen.
> >
> > I'm happy to provide more details on request.
> >
> > Cheers,
> > Andreas
>
> --
> Andreas



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