linux-kernel - Re: nouveau regression with 6.19.0-rc7

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Message-ID: <CAPM=9tyzBxS69GtwzfaudZBM9SsuZ+ENGJJbT_mXG2qxFkaK4A@mail.gmail.com>
Date: Fri, 30 Jan 2026 20:47:46 +1000
From: Dave Airlie <airlied@...il.com>
To: John Ogness <john.ogness@...utronix.de>
Cc: Lyude Paul <lyude@...hat.com>, Danilo Krummrich <dakr@...nel.org>, 
	Haneen Mohammed <hamohammed.sa@...il.com>, Sean Paul <seanpaul@...omium.org>, 
	Simona Vetter <simona@...ll.ch>, dri-devel@...ts.freedesktop.org, 
	nouveau@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: nouveau regression with 6.19.0-rc7

On Fri, 30 Jan 2026 at 20:19, John Ogness <john.ogness@...utronix.de> wrote:
>
> On 2026-01-30, John Ogness <john.ogness@...utronix.de> wrote:
> > On my workstation I have been using 6.19.0-rc4 with no problems. This
> > morning I switched to 6.19.0-rc7 and now my graphics explodes when the
> > nouveau module is loaded.
>
> Reverting commit 604826acb3f5 ("drm/nouveau/disp: Set
> drm_mode_config_funcs.atomic_(check|commit)") allows the nouveau driver
> to load and work again.
>
> Even though nouveau "technically supports atomic modesetting", it seems
> more callbacks need to be implemented than just atomic_(check|commit).
>
> Should I submit a patch with the revert? Or is there a quick fix to
> allow drm_drv_uses_atomic_modeset() to return true and properly support
> atomic modesetting?

Please submit the revert patch at this point and we can work out the
proper fix later.

Dave.

>
> John Ogness