Output VGA to TV

[Paul Groves]

Hi all.

So I have a small foxconn nettop NT-3700 PC which I wish to use on
ubuntu in the bedroom, mainly to run kodi.

It has VGA output on the onboard AMD 6000 series graphics card which
supports C-Sync on the H pin.

I have set up the graphics card to output PAL 576i at 25fps 50HZ

However I cannot work out how to change the Horizontal sync from 31KHz
to 15.6KHz, with the result being that I can see the picture but it is
continuously scrolling across the screen very fast.

Is there a way do do this with a command? Of course if the graphics card
supports it. How would I check this?

Does anyone have any experience with this?

Thank you

Paul

[Ken D'Ambrosio]

Post by Paul Groves
However I cannot work out how to change the Horizontal sync from 31KHz
to 15.6KHz, with the result being that I can see the picture but it is
continuously scrolling across the screen very fast.
Is there a way do do this with a command? Of course if the graphics
card supports it. How would I check this?

Holy 1995, Batman! The XF86Config file supports doing stuff like you're
describing, but I haven't seen one in use in ages -- indeed, I'm not
even sure they *can* still be used. But X -- always assuming you're
using X -- did support specifying things like horizontal scan rates, and
I assume still does behind the scenes somewhere. But Lordy, I hated
tweaking the modelines by hand.

This page does mention some things (e.g., pointer devices) that I *have*
used in recent memory, so maybe this stuff is still viable:
https://luv.asn.au/overheads/xconfig/index.html

Good luck!

-Ken

[Paul Groves]

Holy 1995, Batman!  The XF86Config file supports doing stuff like you're
describing, but I haven't seen one in use in ages -- indeed, I'm not
even sure they *can* still be used.  But X -- always assuming you're
using X -- did support specifying things like horizontal scan rates, and
I assume still does behind the scenes somewhere.  But Lordy, I hated
tweaking the modelines by hand.
This page does mention some things (e.g., pointer devices) that I *have*
https://luv.asn.au/overheads/xconfig/index.html
Good luck!
-Ken

Thanks. I will have a look into that. I am sure it must be possible. I
remember doing it with win 98 and my old ATI card.

I have already made a VGA to SCART cable up so it is literally just the
sync frequency setting I am stuck on.

Does Kodi use X? You know when you log in and select Kodi instead of
Gnome...

[Robert Heller]

Post by Ken D'Ambrosio

Post by Paul Groves
However I cannot work out how to change the Horizontal sync from 31KHz
to 15.6KHz, with the result being that I can see the picture but it is
continuously scrolling across the screen very fast.
Is there a way do do this with a command? Of course if the graphics
card supports it. How would I check this?

Holy 1995, Batman! The XF86Config file supports doing stuff like you're
describing, but I haven't seen one in use in ages -- indeed, I'm not
even sure they *can* still be used. But X -- always assuming you're
using X -- did support specifying things like horizontal scan rates, and
I assume still does behind the scenes somewhere. But Lordy, I hated
tweaking the modelines by hand.
This page does mention some things (e.g., pointer devices) that I *have*
https://luv.asn.au/overheads/xconfig/index.html

It is matter of grep'ing the supported modelines from /var/log/Xorg.0.log
(might be different on your system), and then finding the one that does what
you need and dropping it into a right place in the right config file. Yes,
most modern incarnations of X11 can live completely without a config file and
will figure it out on the fly. (I wonder if the OP's pointy-clicky
configuration created a config file with the "Wrong" magic bits.)

Post by Ken D'Ambrosio
Good luck!
-Ken

--
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[Liam Proven]

Post by Paul Groves
It has VGA output on the onboard AMD 6000 series graphics card which
supports C-Sync on the H pin.

Is that AMD HD 6000?

Looks like the FOSS driver won't support it, but that the older
Catalyst drivers do.

https://support.amd.com/en-us/kb-articles/Pages/AMDCatalyst15-7LINReleaseNotes.aspx

What version of Ubuntu? What display server, X.11 or Wayland?

Got the AMD drivers installed?
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[Paul Groves]

Post by Liam Proven

Post by Paul Groves
It has VGA output on the onboard AMD 6000 series graphics card which
supports C-Sync on the H pin.

Is that AMD HD 6000?
Looks like the FOSS driver won't support it, but that the older
Catalyst drivers do.
https://support.amd.com/en-us/kb-articles/Pages/AMDCatalyst15-7LINReleaseNotes.aspx
What version of Ubuntu? What display server, X.11 or Wayland?
Got the AMD drivers installed?

It is an AMD Radeon HD 6320

Ubuntu 18.04.1. with the default display server. I assume X is the default?