nouveau on G5 Macs

nouveau on G5 Macs

[Jeroen Diederen]

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

Re: nouveau on G5 Macs

[Ilia Mirkin]

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-RSh1/+X/PmFmR6Xm/wNWPw@public.gmane.org> 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-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
> https://lists.freedesktop.org/mailman/listinfo/nouveau

Re: nouveau on G5 Macs

[Jeroen Diederen]

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-RSh1/+X/PmFmR6Xm/wNWPw@public.gmane.org> 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-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
>> https://lists.freedesktop.org/mailman/listinfo/nouveau

Re: nouveau on G5 Macs

[Ilia Mirkin]

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-RSh1/+X/PmFmR6Xm/wNWPw@public.gmane.org> 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-RSh1/+X/PmFmR6Xm/wNWPw@public.gmane.org> 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-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
> >> https://lists.freedesktop.org/mailman/listinfo/nouveau

Re: nouveau on G5 Macs

[Jeroen Diederen]

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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-RSh1/+X/PmFmR6Xm/wNWPw@public.gmane.org> 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-RSh1/+X/PmFmR6Xm/wNWPw@public.gmane.org> 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-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
>> >> https://lists.freedesktop.org/mailman/listinfo/nouveau

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_______________________________________________
Nouveau mailing list
Nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
https://lists.freedesktop.org/mailman/listinfo/nouveau

Re: nouveau on G5 Macs

[Jeroen Diederen]

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another picture

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-RSh1/+X/PmFmR6Xm/wNWPw@public.gmane.org> 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-RSh1/+X/PmFmR6Xm/wNWPw@public.gmane.org> 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-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
>> >> https://lists.freedesktop.org/mailman/listinfo/nouveau

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_______________________________________________
Nouveau mailing list
Nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
https://lists.freedesktop.org/mailman/listinfo/nouveau

Re: 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-RSh1/+X/PmFmR6Xm/wNWPw@public.gmane.org> 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-RSh1/+X/PmFmR6Xm/wNWPw@public.gmane.org> 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-RSh1/+X/PmFmR6Xm/wNWPw@public.gmane.org> 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-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
> >> >> https://lists.freedesktop.org/mailman/listinfo/nouveau

Re: nouveau on G5 Macs

[Jeroen Diederen]

Thanks. How do I find out what is used as compositor? I am using LXDE.

Ilia Mirkin schreef op 2020-06-22 20:18:
> 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-RSh1/+X/PmFmR6Xm/wNWPw@public.gmane.org> 
> 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-RSh1/+X/PmFmR6Xm/wNWPw@public.gmane.org> 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-RSh1/+X/PmFmR6Xm/wNWPw@public.gmane.org> 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-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
>> >> >> https://lists.freedesktop.org/mailman/listinfo/nouveau

Re: nouveau on G5 Macs

[Jeroen Diederen]

I see libwayland packages installed.

Ilia Mirkin schreef op 2020-06-22 20:18:
> 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-RSh1/+X/PmFmR6Xm/wNWPw@public.gmane.org> 
> 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-RSh1/+X/PmFmR6Xm/wNWPw@public.gmane.org> 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-RSh1/+X/PmFmR6Xm/wNWPw@public.gmane.org> 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-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
>> >> >> https://lists.freedesktop.org/mailman/listinfo/nouveau