Quoting alexander bustamante <[EMAIL PROTECTED]>:

> Hi,
>
> I have a matrox g450 card running under fedora core 5. I soldered my own
> vga to rgb-scart cable with pinouts from matrox's own forums. If i tell
> fbset to use a 50Hz "Pal" mode i only se a "rolling" picture from left
> to right. I think it has something to do with the sync cable, but i have
> double-checked my cable with a multimeter and everything is correctly
> soldered on all pins. Can anyone please shed some light on this?
> Shouldn't it be sufficient to load the matroxfb driver and then do fbset
> "PAL" with this in /etc/fb.modes:
>
> mode "PAL"
>     geometry 768 576 768 576 32
>     timings  67723 106 1 44 1 70 4
>     csync high
>     laced true
>     bcast true
> endmode
>

That mode looks like the mode from softdevice homepage. 
http://softdevice.berlios.de/
The gif ( http://www.obsolyte.com/sunFAQ/faq_framebuffer/fbfaq_files/scart.gif )
that is referring a BNC-> RGB-SCART connection is using H-SYNC from VGA (pin 
13).
My understanding is that composite sync is generated on this H-SYNC pin.

Matrox schematics G450->SCART-RGB are using V-SYNC (pin 14) of VGA connector.

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