Comment 24 for bug 31830

Another twist to this problem on a Dapper Beta hard drive install from live CD, with all updates as of 2006-04-23. I have a Samsung 204T 1600x1200 LCD display behind an 8-port IOGear KVM switch. If I boot Dapper with the switch pointed at the Ubuntu machine, I get the desired 1600x1200 resolution. If I boot Dapper with the KVM switch pointed to another machine, I get 640x480 on the login screen and as the only choice in System->Preferences->Screen Resolution. The modification time on my /etc/X11/xorg.conf file is about 10 minutes prior to the mod time on /etc/passwd, indicating that the Xorg configuration file is as created on installation. This problem does not occur with other distributions on switched machines, including FC5, Suse 10.0, Xandros 3 and Mandrake 10.0. Come to think of it, this problem did not occur with Breezy Badger that I can remember. Following are the relevant sections of my xorg.conf file.

Section "Device"
        Identifier "NVIDIA Corporation NV5M64 [RIVA TNT2 Model 64/Model 64
Pro]"
        Driver "nv"
        BusID "PCI:1:0:0"
EndSection

Section "Monitor"
        Identifier "SyncMaster"
        Option "DPMS"
EndSection

Section "Screen"
        Identifier "Default Screen"
        Device "NVIDIA Corporation NV5M64 [RIVA TNT2 Model 64/Model 64
Pro]"
        Monitor "SyncMaster"
        DefaultDepth 24
        SubSection "Display"
                Depth 1
                Modes "1600x1200" "1280x1024" "1280x960" "1152x864" "1024x768" "832x624" "800x600" "720x400" "640x480"
        EndSubSection
        SubSection "Display"
                Depth 4
                Modes "1600x1200" "1280x1024" "1280x960" "1152x864" "1024x768" "832x624" "800x600" "720x400" "640x480"
        EndSubSection
        SubSection "Display"
                Depth 8
                Modes "1600x1200" "1280x1024" "1280x960" "1152x864" "1024x768" "832x624" "800x600" "720x400" "640x480"
        EndSubSection
        SubSection "Display"
                Depth 15
                Modes "1600x1200" "1280x1024" "1280x960" "1152x864" "1024x768" "832x624" "800x600" "720x400" "640x480"
        EndSubSection
        SubSection "Display"
                Depth 16
                Modes "1600x1200" "1280x1024" "1280x960" "1152x864" "1024x768" "832x624" "800x600" "720x400" "640x480"
        EndSubSection
        SubSection "Display"
                Depth 24
                Modes "1600x1200" "1280x1024" "1280x960" "1152x864" "1024x768" "832x624" "800x600" "720x400" "640x480"
        EndSubSection
EndSection