Thans to all who responded. I found out about xvidtune - so I used it to inquite about the pixel clock and sync and it reports exactly the right figures. What's interesting is that it reports the pixel clock at "108" regardless of whether or not the following modelines are present in the XF86Config file: "Picks" this one: #Modeline "1280x1024" 108 1280 1328 1512 1712 1024 1025 1028 1054 etc... #Modeline "1280x1024" 108.5 1280 1328 1512 1712 1024 1025 1028 1054 #Modeline "1280x1024" 109 1280 1328 1512 1712 1024 1025 1028 1054 #Modeline "1280x1024" 109.5 1280 1328 1512 1712 1024 1025 1028 1054 This is a line originally made by Xconfigurator before I switched to the lat panel and nvidia driver (Xconfigurator does not work with the nvidia driver): Modeline "1280x1024" 110 1280 1328 1512 1712 1024 1025 1028 1054 Modeline "1280x1024" 126.5 1280 1312 1472 1696 1024 1032 1040 1068 ... I'm not sure whay my display was looking bad in the first place - I think the flat panel (MAG LT765S) is successfully communicating that it needs exactly a 108 pixel clock and 63.98 Horiz and 60.02 Vert to look best. The display has an "autotune" and "phase" adjustment - fiddling with these usually makes things look worse. So, in summary, the XF86Config modelines seem to be ignored, at least for fine tuning the pixel clock, if the driver can get the info it needs form the monitor. __________________________________________________ Do you Yahoo!? Faith Hill - Exclusive Performances, Videos & More http://faith.yahoo.com _______________________________________________ Xpert mailing list Xpert@xxxxxxxxxxx http://XFree86.Org/mailman/listinfo/xpert