On Mon, Oct 28, 2002 at 12:31:40PM +0100, Michel D?nzer wrote: > On Mon, 2002-10-28 at 04:07, Marc Wilson wrote: > > On Sun, Oct 27, 2002 at 07:25:51PM -0500, [EMAIL PROTECTED] wrote: > > > 2) It is possible that this is a hardware limitation. Multiple-output > > > video cards often don't support all features on secondary "heads". > > > > I always had the problem with my G450 and later with my G550 that X > > wouldn't set the gamma the same on both heads, although it claimed that it > > was according to the log. The monitors were the same make and model, and > > the difference was distinct and annoying. > > > > OTOH, xgamma was always quite willing to set the gamma on the heads > > separately, and I was also able to specify specific gamma settings for each > > monitor in XF86Config-4 and have them take effect. > > I thought I'd read on the Xpert list that the second head of those cards > indeed doesn't have a hardware palette and thus can't do gamma > correction. I can't offer any first hand experience though.
I don't think this is the problem, because I use a machine with two matrox cards (a G400 and a Millenium II) in a Xinerama setup, and xgamma will only change the gamma on the first head. The capability is obviously there to set gamma on both in hardware. -jwb
