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

[Nick Rout]

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.