[mythtv-users] Setting specific xrandr mode based on the file's refresh rate

Jens.Peder.Terjesen at devoteam.com Jens.Peder.Terjesen at devoteam.com
Tue Feb 17 09:51:22 UTC 2009




-----Jean-Yves Avenard wrote: -----

>Hi
>
>2009/2/17 Boleslaw Ciesielski <bolek-mythtv at curl.com>:
>> Actually, I think I was wrong... It seems that the whole
>XRRModeInfo is
>> a lie, including the dotClock, hTotal and vTotal :-(
>
>Was just coding some stuff, haven't tested yet.
>
>I wouldn't be surprised if you couldn't compute the proper refresh
>rate, because looking at the xrandr source code ; that's how they
>find
>50, 51 etc.. By computing from the dotclock htotal and vtotal...
>
>
>>
>> Did you try what happens when you put
>>
>> Option "DynamicTwinView" "false"
>
>I did try with this.
>
>xrandr then detects three available refresh rates for my TV: 50, 60
>and 24. However, the screen will always be in 60Hz no matter what I
>choose: 50 or 24.
>nvidia-settings also reports that the refresh rate is 60Hz no matter
>which rate I choose...
>
>
>>
>> in xorg.conf? This should disable the fake refresh stuff but I am
>not
>> quite sure what the implications are.
>
>It won't work unfortunately.
>
>And I also want to have 23.976Hz and 59.94Hz available ; which don't
>show up if dynamic twinview is disabled.
>
>Jean-Yves

Have you tried disabling GPU scaling?
http://www.nvnews.net/vbulletin/showthread.php?t=126590&highlight=unable
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