[mythtv] DRM VSync

[Ivor Hewitt]

Doug Larrick wrote:
> Ivor Hewitt wrote:
>>
>>This is not a Myth problem and bound to be a driver problem, but I
>>wondered if someone who knew how the DRM calculation code worked could
>>suggest why it would have concluded that the refresh rate matched rather
>>than just failing.
> 
> Looking at the code... refresh rate comes from the videoout method, not
> the vsync method.  Unichrome uses XvMC, right?  I can't see anything
> weird in Myth's computation.  What does xvidtune say about your vertical
> sync rate?
> 
> -Doug
> 

Hi Doug,
I'm not at the machine at the moment so I can only report the console 
output of xvidtune which might not be that useful:-

# xvidtune
Vendor: Monitor Vendor, Model: NEC LCD1850X
Num hsync: 1, Num vsync: 1
hsync range 0:  31.00 -  82.00
vsync range 0:  50.00 -  85.00

# xvidtune  -show
"1280x1024"     0.00   1280    0    0    0   1024    0    0    0

Hmmm, could that be the problem? The driver is using a synthetic 
modeline which isn't fully populated?

Regards,


-- 
Ivor
http://www.ivor.it