[Nouveau] [PATCH 2/3] drm/nouveau/kms/nv50-: Report max cursor size to userspace

[Ilia Mirkin]

On Sun, Feb 28, 2021 at 2:24 PM Uwe Sauter <uwe.sauter.de at gmail.com> wrote:
> >> Summary:
> >>                     5.4.101  | 5.10.19  | 5.11.2
> >> modetest-64       seems ok | seems ok | seems ok
> >> modetest-128      seems ok | seems ok | seems ok
> >> modetest-256      sliced   | sliced   | sliced
> >> X mouse pointer   ok       | ok       | sliced
> >> (modesetting ddx)
> >> X mouse pointer   ok       | ok       | ok
> >> (nouveau ddx)
>
> One more data point:
> Linus' vanilla kernel commit 5695e51619745d4fe3ec2506a2f0cd982c5e27a4 (Sat Feb 27 08:29:02 2021 -0800) shows the same
> behavior.
>
> I could try to bisect…

There's nothing to bisect. The issue is exposed by advertising 256x256
cursors by default. But older kernels supported 256x256 cursors as
well, which is why modetest was a good test for it. modesetting ddx
takes the "default" cursor size.

It's just a matter of figuring out which hardware has the problem.

  -ilia