On Sat, 5 Oct 2002 [EMAIL PROTECTED] wrote:
> > On Sat, 5 Oct 2002 [EMAIL PROTECTED] wrote: > > > > > 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. > I see. I think a brightess adjustment would be more correct, dimming > the green component. I am going to solve this by replacing the > monitor. The greenish monitor is a Sony trinitron from Digital, while > all the others are from Hewlett Packard. Because of what you say, the > sixth monitor must be H.P. as well. > > By the way, I calculated the optimal gamma to be 1.5. I suggested 0.5 as a crude way of turning down the green; this is a relative gamma; "xgamma -rgamma 1.0" would make the red gamma exactly the same as not using gamma correction in the server. Ideally you would display red, green and blue ramps, measure what appears on the screen, and use these measurements to calculate the data feed into XF86VidModeSetGammaRamp, perhaps with different values for each monitor, and re-measuring as the monitor ages. -- Dr. Andrew C. Aitchison Computer Officer, DPMMS, Cambridge [EMAIL PROTECTED] http://www.dpmms.cam.ac.uk/~werdna _______________________________________________ Xpert mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/xpert
