[mythtv-users] What do those reported refresh rates mean?

[Boleslaw Ciesielski]

On 10/03/2012 09:25 PM, Nick Rout wrote:
> I have an nVidia (ION2) graphics card and xrandr reports:
>
> $xrandr|grep 1920
> 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
>
> the judder free page on the wiki says:
>
> "With nvidia adapters however, nvidia has put a work around this
> limitation [ie that XRANDR only supports integers] by presenting a
> unique refresh rate per screen configuration. So it will show as the
> list of available rates: 50, 51, 52, 53 etc... when 50 is 50Hz, 51 is
> 59.97, 52 is 60Hz etc... "
>
> Is there a fixed correlation between the integers that xrandr reports
> and the actual refresh rates? I cannot find this documented anywhere.

These numbers do not have any meaning. They are basically unique 
identifiers for available modes.

But you must be using an older driver. In newer drivers this has 
changed. See 
http://www.gossamer-threads.com/lists/mythtv/users/529400#529400

Bolek