XFree86 -- Gamma Correction

[Michael Vondung]

Hello, all,

I successfully managed to install the FreeBSD nVidia video drivers, but ran
into a problem that is apparently X related: How does one tune the gamma
correction? "man XFree86" suggests the command line option "-gamma value",
where "value" is a number between 0.1 and 10.0, 1.0 being the default. I
tried to start X with "startx -gamma 2.0", but right after displaying the
nVidia logo, X drops back to the command line. The error message says,
"/usr/X11R6/bin/xterm: bad command line option '-gamma'. The XFree86 version
is 4.3.0 (compiled from ports).

What am I doing wrong, and where would I look for more information? Also, if
a working option can be found, is there a place where I can put this so that
it is automatically used and I don't have to type it in manually every time
X is started?

(At this point I actually miss the nice GUI-interface to tweak the card that
comes with nVidia's XP drivers. :)

Thanks!