I have two Dell P1110 monitors and 2 video cards in my system: 01:00.0 VGA compatible controller: nVidia Corporation NV5 [RIVA TNT2/TNT2 Pro] (rev 15) 02:07.0 VGA compatible controller: ATI Technologies Inc 3D Rage Pro 215GP (rev 5c) trying to run both at: 1600 x 1200 at 85 Hz using xfree-4.3.0-r3 (gentoo) at a depth of 24 one will be at 106.1 Khz/85 Hz 1600x1200 and the other at 87.7Khz/70Hz 1600x1200 at a depth of 16 both are at 106.1Khz/85Hz 1600x1200 (and I don't feel like I'm going to puke!) I don't understand why one monitor will drop down in hsync and VerticalSync. Maybe my XF86Config file is lacking? Can I force refresh rates (H and V) on the mode lines? Anyone have a favorite resource for figuring this out.. I must be googling with the wrong word. not getting much info. here's what I do have inmy XF86Config: Both monitors are the same so here's the monitor section: Section "Monitor" #DisplaySize 400 300 # mm Identifier "Monitor0" VendorName "DEL" ModelName "DELL P1110" Option "DPMS" HorizSync 30-121 VertRefresh 48-160 EndSection Here's the vid cards section (leaving out comments): Section "Device" . . Identifier "Card0" Driver "ati" VendorName "ATI" BoardName "3D Rage Pro 215GP" ChipSet "ati" ChipId 0x4750 ChipRev 0x5c BusID "PCI:2:7:0" EndSection Section "Device" . . Identifier "Card1" Driver "nv" VendorName "nVidia Corporation" BoardName "NV5 [RIVA TNT2/TNT2 Pro]" BusID "PCI:1:0:0" EndSection the Display subsections in the Screen sections (for each screen) are like this for depths of 8,15,16,24 and 32: Subsection "Display" Depth 16 Modes "1600x1200" "1400x1050" "1280x1024" "1280x960" "1152x864" "1024x768" "800x600" "640x480" EndSubsection john _______________________________________________ TCLUG Mailing List - Minneapolis/St. Paul, Minnesota http://www.mn-linux.org tclug-list at mn-linux.org https://mailman.real-time.com/mailman/listinfo/tclug-list