[mythtv-users] mythtv and judder free playback

Phil Wild philwild at gmail.com
Tue Oct 26 01:14:39 UTC 2010


On 26 October 2010 00:34, John Drescher <drescherjm at gmail.com> wrote:
> On Mon, Oct 25, 2010 at 12:29 PM, Phil Wild <philwild at gmail.com> wrote:
>> Hello,
>>
>> I am trying to implement judder free playback as per the JYA
>> instructions within the wiki.
>>
>> Everything appears to work fine except for one frequency which my TV
>> does not support.
>>
>> I have a Samsung 50" plasma model 50A650
>>
>> If I run xrtandr I see the following:
>>
>> Screen 0: minimum 320 x 175, current 1920 x 1080, maximum 1920 x 1080
>> default connected 1920x1080+0+0 0mm x 0mm
>>   1920x1080      50.0     51.0     52.0*    53.0     54.0     55.0
>>  56.0     57.0     58.0     59.0     60.0     61.0     62.0     63.0
>>  64.0     65.0     66.0     67.0     68.0     69.0
>>   1680x1050      70.0     71.0
>> {more deleted]
>>
>> And if I work through the frequencies, all work fine except for 63
>> using xrandr -r 63
>>
>> When I run this command, my X log file displays the following
>>
>>  NVIDIA(0): Setting mode "1920x1080_60_3"
>>
>> Perhaps I am missing something but I can't seem to figure out what I
>> have to modify to stop mythtv selecting this frequency.
>>
>
> I believe the part of problem is nvidia drivers do not (by default)
> report the correct frequency in xrandr.
>
> For me I believe 50 Hz is reported and that really means 85 Hz on my
> CRT monitor.
>
> John

So how do you fix this then?


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