Re: [PATCH RESEND v7 0/5] drm/nouveau: Enable atomic modesetting by default

On Fri, 14 Aug 2026 at 06:48, Lyude Paul <[email protected]> wrote:
>
> Nouveau is one of the very few modern hardware drivers in the kernel that
> doesn't have atomic modesetting enabled by default, in part because when it
> was originally written by Ben there wasn't much in the way of good atomic
> modesetting clients to actually test things out with.
>
> Nowadays however, atomic modesetting is very much the norm - and support in
> userspace for non-atomic drivers is starting to bitrot a bit - leading to
> its own set of issues. At the same time, many of those issues are fixed by
> just turning on atomic in nouveau. Plus, I've been running nouveau with
> atomic modesetting on by default for most of the machines I work on, and
> I've already fixed quite a number of issues to the point where things seem
> quite stable (excluding a single screen flashing bug on my desktop, which I
> am not particularly convinced has anything to do with atomic modesetting).
>
> This patch series enables atomic modesetting by default, at least for
> NV50 and newer. NV04 is left unchanged, as atomic modesetting was never
> implemented for it. This series also enforces leaving atomic modesetting
> disabled on <NV50, and adds the value of nouveau.atomic to our kernel
> debug output.
>
> Previous version of this patch series:
>         https://patchwork.freedesktop.org/series/171310/
>
> (Resent, because of a formatting error on one of the patches)

Nice, for the series:

Reviewed-by: Dave Airlie <[email protected]>

Dave.
>
> Lyude Paul (5):
>   drm/nouveau: Fix cleanup bug in nouveau_drm_device_new()
>   drm/nouveau: Print the nouveau.atomic parameter in
>     nouveau_display_options()
>   drm/nouveau: Fix drm_driver struct/nouveau.atomic parameter handling
>   drm/nouveau/kms: Only allow enabling atomic modesetting on nv50+
>   drm/nouveau/kms/nv50-: Enable atomic modesetting by default
>
>  drivers/gpu/drm/nouveau/nouveau_drm.c | 116 ++++++++++++++++----------
>  1 file changed, 71 insertions(+), 45 deletions(-)
>
>
> base-commit: 9b388fc3d0e63a4f5b022d326151e176e8d82e25
> --
> 2.55.0
>