[mythtv-users] Playback stoppyand go-y. Ie super-duper-uber-jittery.

Kevin Kuphal kuphal at dls.net
Tue Mar 28 20:15:18 UTC 2006


Greg Stark wrote:
> Greg Stark <gsstark at MIT.EDU> writes:
>
>   
>> So my question is, what does mythfrontend use to handle vsync if it's _not_
>> using opengl vsync? Reading the code it seems to base it on some calculated
>> refresh rate, but where does it get that refresh rate?
>>     
>
> Ok, it seems it uses XF86VidModeGetModeLine to calculate a refresh rate. And
> the ATI driver appears to be giving a bogus value that makes mythtv think the
> refresh rate is 434Khz. I could see how that would confuse mythtv.
>
> I submitted an xorg bug report:
> https://bugs.freedesktop.org/show_bug.cgi?id=6421
>   
Greg, is there a way to query this value from X-windows or even the 
command-line?  I've been having problems getting some of my systems 
working with XvMC and I'm wondering if I'm experiencing the same thing 
and I could check it easily remotely (I'm impatient and can't wait until 
I get home tonight :) )

Kevin


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