On Sat, 5 Oct 2002 [EMAIL PROTECTED] wrote:
> Is there any possibility of adjusting colour balance?
> (for the mga Matrox driver.)
> I have now got 5 monitors showing skin tones good enough, but the 6th
> is greenish, and that monitor do not have any adjustments for that
> under the hood. So, software is the only possible solution, unless
> I want to risk electrocutzapping myself. (Been there, done that, got
> 3 spots on 2 fingers burned to ash...) NEVER poke into a monitor with
> both hands, even when the power has been off for several ours!!!
>
> So, what kind of colour adjustments is possible in the mga driver?
> Any URL about that?
The command
xgamma -ggamma 0.5
should make the screen less green. Try adjusting the value.
For more precise control, you want the function XF86VidModeSetGammaRamp
(and possibly XF86VidModeGetGammaRamp and XF86VidModeGetGammaRampSize)
defined in
/usr/X11R6/include/X11/extensions/xf86vmode.h
Which let you define the value of each point on the "gamma" curve.
Unfortunately I can't find these mentioned in the man pages.
**** ***
These should work on the matrox cards, but only on the first head
as the hardware on the second head doesn't have a palette.
I think there is a swap-head option to switch which connector
is the second head.
**** ****
> PS: My 6 head system works quite nice with KDE now, except that I have no
> 3d, and one ghastly green monitor.
> (Seems a few programs bugs with widths over 2000 pixels.)
If you used no_accel, your 2D may be slow too.
--
Dr. Andrew C. Aitchison Computer Officer, DPMMS, Cambridge
[EMAIL PROTECTED] http://www.dpmms.cam.ac.uk/~werdna
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