Screen data for Samsung 243T Using Nvidia 6600 GT hookeup via DVI with "nv" driver Xorg driver 1) xrandr version 2) xrandr --properites 3) xrandr --verbose 4) X log EDID data For this case everything is working perfectly! 1) ubuntu@ubuntu:~$ xrandr --version Server reports RandR version 1.2 2) ubuntu@ubuntu:~$ xrandr --properties Screen 0: minimum 640 x 400, current 1920 x 1200, maximum 1920 x 1200 default connected 1920x1200+0+0 0mm x 0mm 1920x1200 60.0* 1600x1200 60.0 1680x1050 60.0 1600x1024 60.0 1400x1050 70.0 60.0 1280x1024 75.0 60.0 1440x900 60.0 1280x960 60.0 1280x800 60.0 1152x864 75.0 1280x768 60.0 1152x768 55.0 1024x768 75.0 70.0 60.0 832x624 75.0 800x600 75.0 72.0 60.0 56.0 640x480 75.0 73.0 67.0 60.0 720x400 70.0 3) ubuntu@ubuntu:~$ xrandr --verbose Screen 0: minimum 640 x 400, current 1920 x 1200, maximum 1920 x 1200 default connected 1920x1200+0+0 (0x6c) normal (normal) 0mm x 0mm Identifier: 0x6b Timestamp: 86959 Subpixel: horizontal rgb Clones: CRTC: 0 CRTCs: 0 1920x1200 (0x6c) 138.2MHz h: width 1920 start 0 end 0 total 1920 skew 0 clock 72.0KHz v: height 1200 start 0 end 0 total 1200 clock 60.0Hz 1600x1200 (0x6d) 115.2MHz h: width 1600 start 0 end 0 total 1600 skew 0 clock 72.0KHz v: height 1200 start 0 end 0 total 1200 clock 60.0Hz 1680x1050 (0x6e) 105.8MHz h: width 1680 start 0 end 0 total 1680 skew 0 clock 63.0KHz v: height 1050 start 0 end 0 total 1050 clock 60.0Hz 1600x1024 (0x6f) 98.3MHz h: width 1600 start 0 end 0 total 1600 skew 0 clock 61.4KHz v: height 1024 start 0 end 0 total 1024 clock 60.0Hz 1400x1050 (0x70) 102.9MHz h: width 1400 start 0 end 0 total 1400 skew 0 clock 73.5KHz v: height 1050 start 0 end 0 total 1050 clock 70.0Hz 1400x1050 (0x71) 88.2MHz h: width 1400 start 0 end 0 total 1400 skew 0 clock 63.0KHz v: height 1050 start 0 end 0 total 1050 clock 60.0Hz 1280x1024 (0x72) 98.3MHz h: width 1280 start 0 end 0 total 1280 skew 0 clock 76.8KHz v: height 1024 start 0 end 0 total 1024 clock 75.0Hz 1280x1024 (0x73) 78.6MHz h: width 1280 start 0 end 0 total 1280 skew 0 clock 61.4KHz v: height 1024 start 0 end 0 total 1024 clock 60.0Hz 1440x900 (0x74) 77.8MHz h: width 1440 start 0 end 0 total 1440 skew 0 clock 54.0KHz v: height 900 start 0 end 0 total 900 clock 60.0Hz 1280x960 (0x75) 73.7MHz h: width 1280 start 0 end 0 total 1280 skew 0 clock 57.6KHz v: height 960 start 0 end 0 total 960 clock 60.0Hz 1280x800 (0x76) 61.4MHz h: width 1280 start 0 end 0 total 1280 skew 0 clock 48.0KHz v: height 800 start 0 end 0 total 800 clock 60.0Hz 1152x864 (0x77) 74.6MHz h: width 1152 start 0 end 0 total 1152 skew 0 clock 64.8KHz v: height 864 start 0 end 0 total 864 clock 75.0Hz 1280x768 (0x78) 59.0MHz h: width 1280 start 0 end 0 total 1280 skew 0 clock 46.1KHz v: height 768 start 0 end 0 total 768 clock 60.0Hz 1152x768 (0x79) 48.7MHz h: width 1152 start 0 end 0 total 1152 skew 0 clock 42.2KHz v: height 768 start 0 end 0 total 768 clock 55.0Hz 1024x768 (0x7a) 59.0MHz h: width 1024 start 0 end 0 total 1024 skew 0 clock 57.6KHz v: height 768 start 0 end 0 total 768 clock 75.0Hz 1024x768 (0x7b) 55.1MHz h: width 1024 start 0 end 0 total 1024 skew 0 clock 53.8KHz v: height 768 start 0 end 0 total 768 clock 70.0Hz 1024x768 (0x7c) 47.2MHz h: width 1024 start 0 end 0 total 1024 skew 0 clock 46.1KHz v: height 768 start 0 end 0 total 768 clock 60.0Hz 832x624 (0x7d) 38.9MHz h: width 832 start 0 end 0 total 832 skew 0 clock 46.8KHz v: height 624 start 0 end 0 total 624 clock 75.0Hz 800x600 (0x7e) 36.0MHz h: width 800 start 0 end 0 total 800 skew 0 clock 45.0KHz v: height 600 start 0 end 0 total 600 clock 75.0Hz 800x600 (0x7f) 34.6MHz h: width 800 start 0 end 0 total 800 skew 0 clock 43.2KHz v: height 600 start 0 end 0 total 600 clock 72.0Hz 800x600 (0x80) 28.8MHz h: width 800 start 0 end 0 total 800 skew 0 clock 36.0KHz v: height 600 start 0 end 0 total 600 clock 60.0Hz 800x600 (0x81) 26.9MHz h: width 800 start 0 end 0 total 800 skew 0 clock 33.6KHz v: height 600 start 0 end 0 total 600 clock 56.0Hz 640x480 (0x82) 23.0MHz h: width 640 start 0 end 0 total 640 skew 0 clock 36.0KHz v: height 480 start 0 end 0 total 480 clock 75.0Hz 640x480 (0x83) 22.4MHz h: width 640 start 0 end 0 total 640 skew 0 clock 35.0KHz v: height 480 start 0 end 0 total 480 clock 73.0Hz 640x480 (0x84) 20.6MHz h: width 640 start 0 end 0 total 640 skew 0 clock 32.2KHz v: height 480 start 0 end 0 total 480 clock 67.0Hz 640x480 (0x85) 18.4MHz h: width 640 start 0 end 0 total 640 skew 0 clock 28.8KHz v: height 480 start 0 end 0 total 480 clock 60.0Hz 720x400 (0x86) 20.2MHz h: width 720 start 0 end 0 total 720 skew 0 clock 28.0KHz v: height 400 start 0 end 0 total 400 clock 70.0Hz 4) Took this snippet from X log: ============================= (II) NV(0): Monitor name: SyncMaster (II) NV(0): Serial No: H4KY400649 (II) NV(0): EDID (in hex): (II) NV(0): 00ffffffffffff004c2df7003432424e (II) NV(0): 110f0103803420a02aee95a3544c9926 (II) NV(0): 0f5054bfef80a9408180714f01010101 (II) NV(0): 010101010101283c80a070b023403020 (II) NV(0): 360006442100001a000000fd00374b1e (II) NV(0): 5011000a202020202020000000fc0053 (II) NV(0): 796e634d61737465720a2020000000ff (II) NV(0): 0048344b593430303634390a202000fb (--) NV(0): CRTC 0 is currently programmed for DFP (II) NV(0): Using DFP on CRTC 0 (--) NV(0): Panel size is 1920 x 1200 (II) NV(0): EDID vendor "SAM", prod id 247 (II) NV(0): Using EDID range info for horizontal sync (II) NV(0): Using EDID range info for vertical refresh