High, > > Greetings ! > > I am trying to use a Matrox G450 with an IBM 6091 19 monitor [19" > single > freq] and get an unusable image on the screen, so far. [snowy, angular, > semi-static, colors] > With a single frequency monitor you should allow only one frequency in your X configuration. I found a very usefull site for you with google: http://www.lysator.liu.se/~jonass/linux6091.html
If you have XF86 version 4, it is sufficient to replace the monitor section with: Section "Monitor" Identifier "Primary Monitor" VendorName "Unknown" ModelName "Unknown" HorizSync 30-77 VertRefresh 75 Modeline "1280x1024" 108.451 1280 1324 1509 1710 1024 1027 1030 1056 -hsync -vsync EndSection (of course with the appropiate VertRefresh and Modeline (resolution) for the monitor). Greetz, Sebastiaan