[ltp] Changing CRT frequency

[Shem Multinymous]

Hi,

On 2/26/06, Alex Deucher <alexdeucher@gmail.com> wrote:
> use mergedfb and specify metamodes with different refresh rates
> (e.g., 1024x768-1024x768-60 1024x768-1024x768-85, etc.) then use
> xrandr or ctrl-alt-+/- to switch modes.  Make sure you define your
> modelines.

Thanks! Which version of X.org supports that? I don't see this syntax
mentioned in the radeon(4x) manpage of either x.org 6.8.x or 7.0.x.
Also, how does one come up with modelines nowadays?

  Shem