[mythtv-users] OT: xorg configuration for VGA to SCART converter

[Alexander Fisher]

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Robin Hill wrote:
> On Fri Jul 21, 2006 at 07:20:23PM +0100, Alexander Fisher wrote:
> 
>> Hi Guys.
>>
>> I've built myself a VGA to RGB SCART converter.
>> http://www.nexusuk.org/projects/vga2scart/
>>
>> So far I've been unable to convince x to start with a PAL compatible SD
>> modeline.  I'm using linux 2.6.17 with the latest 8762 NVIDIA driver
>> with a Geforce FX5200 card.
>> I've attached the config file and log generated.
>>
>> Any guesses to what I'm doing wrong?  Have many people here built such a
>> converter?  Any horror stories of fried TVs?
>> Thanks for any help,
>> Alex
> 
> Well, from the log it would appear that X doesn't like the modeline
> you've specified:
> 
>> (WW) NVIDIA(0): No valid modes for "768x576"; removing.
> 
> though it doesn't say why.  You should get more information on this by
> increasing the logging level for X (start X with "-logverbose 4" or
> higher - I'm not sure what level's needed).  That'll then list exactly
> why each modeline is rejected.
> 

Thanks for the tip.

 --- Building ModePool for CRT-0 ---
(II) NVIDIA(0):   Validating Mode "768x576":
(II) NVIDIA(0):     768 x 576 @ 25 Hz
(II) NVIDIA(0):     Mode Source: Custom ModeLine
(II) NVIDIA(0):       Pixel Clock      : 14.76 MHz
(II) NVIDIA(0):       HRes, HSyncStart :  768,  789
(II) NVIDIA(0):       HSyncEnd, HTotal :  858,  944
(II) NVIDIA(0):       VRes, VSyncStart :  576,  580
(II) NVIDIA(0):       VSyncEnd, VTotal :  583,  625
(II) NVIDIA(0):       H/V Polarity     : -/-
(II) NVIDIA(0):       Extra            : Interlaced
(WW) NVIDIA(0):     Mode is rejected: HorizSync (15.6 kHz) out of range
(WW) NVIDIA(0):     (28.000-33.000 kHz).

I didn't think it was necessary to specify a HorizSync range when using
a custom modeline, but obviously I was wrong!

Alex
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