Apple KB http://docs.info.apple.com/article.html?artnum=112518 shows that the 12" RGB display is a single-frequency display at 512x384, and vertical sync of 60.15 Hz. It was probably made for a specific on-board video circuit. The 14" Performa Display shows 640x480 at 66.7 Hz, if that is your display. My GeForce 4 Ti has 60 and 67 Hz settings, so maybe your GeForce 4 MX could sync to them. I don't know how exact it has to be. You can try to get the old Twin Turbo also, who know what frequencies it might support. HTH, Mel "The ardent golfer would play Mount Everest if somebody would put a flagstick on top." ~ Pete Dye On Feb 22, 2005, at 2:07 PM, J.R.Rosen wrote: > OK fellow listers - I NEED YOU HELP - PLEASE!!! > > I've got a G4/1ghz MP with the stock nVidia GeForce4 MX video card. I > was using an Apple 17" Studio Display (CRT) with a 17" ViewSonic as a > second monitor. The ViewSonic bit the dust, and I tried connecting an > old Apple 12" Performa display in place of the ViewSonic. > > Needless to say, the 12" just "rolled" and "rolled". The computer was > trying to use the 12" as the "main" with just a blue background on the > 17" Studio. I could see an image through the rolling but could not > get to the preferences to adjust the "Monitors". I tried turning the > 12" off, but the 17" was still acting like the secondary monitor. > > Is it possible to make this work? If so, how? Am I S.O.L. with this > setup? Does anyone have any suggestions? I'm needing this now, and I > don't have time to go to the computer store for a replacement. > > I do have an old TwinTurbo PCI card, and I do have available PCI slot, > could that be an option? > > G4/1ghz QuickSilver 2002, 1.5gb RAM, OS 10.3.5. > > Thanks in advance! > > J. R. Rosen > Armadillo Press-Printing & Graphics > 305 Wells Fargo Dr., Suite 4 > Houston, TX 77090 > 281-586-9383 (phone) > 281-586-9876 (fax) > 281-467-5366 (cell) > dilloman at armadillo-press.com > dilloman at sbcglobal.net > dilloman at aol.com > www.armadillo-press.com_______________________________________________ > G4 mailing list > G4 at listserver.themacintoshguy.com > http://listserver.themacintoshguy.com/mailman/listinfo/g4 -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: text/enriched Size: 2193 bytes Desc: not available Url : http://listserver.themacintoshguy.com/pipermail/g4/attachments/20050222/641cd339/attachment.bin