Hello, sorry fo the typos. Wanted to catch you before the weekend, to get
some hints for upcoming work.
I'm back at PC.
Does your driver support switching to 240p in NTSC and 288p in PAL on the
go via xrandr, for example?
If not, can I find some relevant part of code in your repository where to
implement that?
Some info I found regarding 240p and that it is a part of NTSC:
https://en.wikipedia.org/wiki/Low-definition_television
TV with S-Video mostly supports 480i and 240p as well. So the current issue
is outputting that via TV out.
My current configuration looks like this:
TV-1 connected 240x224+0+0 (normal left inverted right x axis y axis) 0mm x
0mm
720x480 59.94 +
1024x768 59.94
800x600 59.94
720x576 59.94
640x480 59.94
400x300 59.94
320x240 59.93
320x200 59.94
768x576 50.00
360x200 60.00
360x240 60.00
640x240 60.00
SR-1_240x224 at 60.10 60.10*
I see I have created 240x224 (I need to fix that), but even 320x240 does
not work. It always stays at 480i.
I read somewhere that older GPU with TV out can do it. Only newer cards in
Windows cannot do it.
Thank you a lot,
Lukas
On Fri, Nov 4, 2022 at 5:43 PM Lukas Satin <luke.satin at gmail.com>
wrote:
> Yes I just figured it out an hour ago. It works same as hd480i.
>
> Win7 can switch pal and ntsc just by changing desktop tesolution. Wht
> about here?
>
> TV with svideo or component rca supporr 480i and 240p by the spec.
>
> I hve added modelines for that. It works via dvi to vga to bnc to rca wity
> 15khz kernel.
>
> How to modify ut driver to outtput 240p via tv out?
>
> Imvon phone sorry fot ttyoos
>
> On Fri 4. 11. 2022 at 17:35, Ilia Mirkin <imirkin at alum.mit.edu>
wrote:
>
>> https://nouveau.freedesktop.org/KernelModuleParameters.html
>>
>> Perhaps nouveau.tv_norm=NTSC-M will help get you the 60hz modes? I
>> haven't played with these options much at all, it has always sorta
>> Just Worked for me.
>>
>> This should have the validation of new modes, make sure you don't
run
>> afoul of this:
>>
>>
>>
https://cgit.freedesktop.org/drm/drm/tree/drivers/gpu/drm/nouveau/dispnv04/tvnv17.c#n303
>>
>> Cheers,
>>
>> -ilia
>>
>> On Thu, Nov 3, 2022 at 10:56 PM Lukas Satin <luke.satin at
gmail.com> wrote:
>> >
>> > Hi, I am currently testing Batocera Linux for retrogaming with
15KHz
>> output on CRT / TV.
>> >
>> > The machine I discovered is a certified Windows Media Center /
Intel
>> ViiV machine: Acer iDEA 510
>> >
>> > It features:
>> > RCA component output
>> > S-Video CVBS output
>> > S-Video DIN output
>> > Scart IN / Scart OUT (two DVB-T tuners for realtime playback and
>> recording)
>> > DVI-I out
>> > HDMI out
>> >
>> > Laptop style components, MXM module Geforce 7 Go 7600 (NVIDIA
Curie).
>> >
>> > Now, BIOS default output via RCA component is 640x480 NTSC (480i,
>> 60Hz). In Windows I can switch between NTSC and PAL (480i or 576i).
>> >
>> > As this is EU machine, after BIOS it often defaults to 576i PAL,
unless
>> set otherwise.
>> >
>> > Now your nouveau driver therefore defaults to 576i.
>> >
>> > Xrandr looks like this:
>> > TV-1 connected 640x480+0+0 (normal left inverted right x axis y
axis)
>> 0mm x 0mm
>> > 720x576 50.00 +
>> > 1024x768 50.00
>> > 800x600 50.00
>> > 720x480 50.00
>> > 640x480 50.00*
>> > 400x300 50.00
>> > 320x240 50.00
>> > 320x200 50.00
>> > 768x576 50.00
>> > 360x200 60.00
>> > 360x240 60.00
>> > 640x240 60.00
>> >
>> > I tried to add some additional modelines. But look at 640x480. It
>> forces 50Hz and I am unable to remove it, create new or change it to
60Hz.
>> Therefore the TV is always set to 576i and screen output is 640x480,
>> therefore it looks like GPU scaled. First I read your troubleshooting
which
>> mentions scaling, so I tried to disable scaling. Did not help.
>> >
>> > Now I read about this:
>> >
>>
https://nvidia.custhelp.com/app/answers/detail/a_id/177/~/linux---configuring-tv-out
>> >
>> > And this might be the solution and issue. It would correspond with
what
>> can be observed in Windows 7.
>> >
>> > Does your driver have some options for configuring TV Out and name
>> switching from PAL to NTSC or HD480i mode? It should be automatic based
on
>> 480i or 576i or 240p or 288p, but it is not.
>> >
>> > Thanks,
>> > Lukas
>>
>
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