[Nouveau] nouveau on G5 Macs

[Ilia Mirkin]

OK. That's not tearing. That's like a bad pitch on an image.
(Presumably you only find the second image, IMG_1968.jpg,
problematic?)

I'm guessing you're using a GL-based compositor, which I fully expect
to work poorly. Please try a non-compositing or XRender-based
compositing environment.

Cheers,

  -ilia

On Mon, Jun 22, 2020 at 2:15 PM Jeroen Diederen <jjhdiederen at zonnet.nl> wrote:
>
> This is with 64k page size.
>
>
>
> Ilia Mirkin schreef op 2020-06-22 19:27:
> > I suspect screen tearing (as it's usually defined) is to be expected.
> > Can you take a photo of what you're seeing, since I'm suspecting it's
> > more than regular screen tearing?
> >
> > On Mon, Jun 22, 2020 at 12:08 PM Jeroen Diederen
> > <jjhdiederen at zonnet.nl> wrote:
> >>
> >> Hi Ilia,
> >>
> >> I experience screen tearing for both 64k and 4k page size.
> >> My iMac G5 has an nVidia Geforce FX 5200 Ultra GPU.
> >>
> >> Regards,
> >> Jeroen
> >>
> >>   Ilia Mirkin schreef op 2020-06-22 17:25:
> >> > Which GPU do you have? The NV40 AGP board (GeForce 6800) works
> >> > particularly poorly. However as long as you go with 4k pages (and
> >> > there's no real benefit to 64k pages for most applications), basic
> >> > things should work. I wouldn't recommend using a GL-based compositor
> >> > though.
> >> >
> >> > Which distortion are you talking about?
> >> >
> >> > Cheers,
> >> >
> >> >   -ilia
> >> >
> >> > On Mon, Jun 22, 2020 at 11:10 AM Jeroen Diederen
> >> > <jjhdiederen at zonnet.nl> wrote:
> >> >>
> >> >> Hi all,
> >> >>
> >> >> I have been trying to solve nouveau issues on my iMac G5 for ages. As
> >> >> far as I can understand it, there is a problem with nouveau and page
> >> >> size mapping. I tried both 64K and 4K page size kernels and the the
> >> >> result is always distorted video.
> >> >> There is an old To-Do list, which says "fix the page size mapping
> >> >> problem on G5/64 bit for exposing fifo regs" on
> >> >> https://nouveau.freedesktop.org/wiki/ToDo/.
> >> >>
> >> >> Is there any chance that this bug will be fixed ? I am not a
> >> >> programmer,
> >> >> so I can't be of any help.
> >> >>
> >> >> Jeroen Diederen
> >> >> _______________________________________________
> >> >> Nouveau mailing list
> >> >> Nouveau at lists.freedesktop.org
> >> >> https://lists.freedesktop.org/mailman/listinfo/nouveau