Color Tuning

drakonite · l33t Joined: 02 Nov 2002 Posts: 768 Location: Lincoln, NE

Here is the deal... I have 2 montors that I use for my computer, both of which I got for from my father who got them for free from work and fixed them. They are both Princeton Graphics Systems Ultra 51 montors, and for the most part are pretty nice. The problem is, one of the isn't very crisp (it used to be down right blurring but I've opened it up and adjusted it so it is quite a bit clearer... But still too fuzzy for my likeing at 1024x768..) And the other one has a slight tint of green to it. (Uhh.. I think it's green... Haven't used it in a while...)

In windows I was able to use some software to adjust the picture, things like gamma value (independently for red green and blue) and I believe relative strengths of the red green and blue components of the VGA signal... How would I go about doing something like this in linux?

I have both a Geforce2mx and a Voodoo3. I would like to have both monitors hooked up (preferably the crisp monitor with the color problem to the nvidia, but I'll go with whatever works if only one card can do the adjustments...) using the crips monitor for most things, and using the other mainly as an output for xawtv. So I would prefer being able to adjust each monitor independently... but if it can't be done then I'll just forget about using one of the monitors

Any help?

sa · Guru Joined: 10 Jun 2002 Posts: 450

try `xgamma`, part of xfree86.
I have never had two screens at once, mabey you can tweak each independently with the -d display argument... oh and I see theres a -screen argument too....

:-)

cya,
sa

drakonite · l33t Joined: 02 Nov 2002 Posts: 768 Location: Lincoln, NE

Woohoo!
Thanks. I take it this will have to be run everytime I start X?

*sigh* I guess it's time to finally set up that .xinitrc file I didn't want to make...

nalin · Posted: Wed Jan 29, 2003 5:43 am Post subject:

drakonite · l33t Joined: 02 Nov 2002 Posts: 768 Location: Lincoln, NE

nalin · Posted: Wed Jan 29, 2003 6:11 am Post subject:

if you still have the one for windows you might try checking the gamma settings it uses, increasing them by 25% or so and plugging them into X...on that note I think there are command to tweak.

Also here is an xgamma frontend...I havent tried it...i only tweak brightness becuase my monitor sucks and x default is a bit dark for gaming in general on my system, but you might find this or similar things on google to try

drakonite · l33t Joined: 02 Nov 2002 Posts: 768 Location: Lincoln, NE

Thanks, I'll have to check that out.

It just hit me... I think I know how the windows based wizard works now... Just had to think about it for a while

Now if I only knew how to make dithered color in gimp...
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Kaali · Tux's lil' helper Joined: 12 May 2002 Posts: 80

In most monitors (at least in my old Nokia) is RGB-screws you can use to calibrate it. I don't like to fix hardware problems with software

And in almost all of the new monitors, is a secret maintenance-menu. I know the thing for Nokia.. you can set a LOT of nice settings in there. Try to ask from a local computer-hardware store or something.

drakonite · l33t Joined: 02 Nov 2002 Posts: 768 Location: Lincoln, NE