[ATrpms-users] [possibly OT] nvidia twinview with TV out and mythtv

Chris Rouch crouch at pobox.com
Wed Mar 30 15:17:59 CEST 2005

I have an Nvidia GeForce4 MX 440 card with an analog out and TV out. The
analog is connected to a monitor and runs happily at 1152x864. 

Recently I installed mythtv and decided to connect the TV out to my TV.
I set up xorg.conf to use twinview in clone mode. However the TV will
only run at 1024x768. This mostly works. I can set mythtv to run at
1024x768 and it will appear as a window on my monitor while appearing
full screen on the TV. But some things don't work as expected.

xscreensaver thinks the screen is only 1024x768 and so only blanks part
of the monitor.

firefox won't save a geometry bigger than 1024x768 (I like to have it
nearly full screen).

Conversely, mplayer when run from mythtv thinks full screen is 1152x864,
so on the TV the bottom right part of the picture is missing.

Can anyone provide solutions to these? I append the appropriate part of
xorg.conf, in case I'm doing something stupid.


Section "Device"
        Identifier  "Videocard0"
        Driver      "nvidia"
        VendorName  "Videocard vendor"
        BoardName   "NVIDIA GeForce 4 MX (generic)"
        Option      "NoLogo" "on"
        Option      "TwinView"
        Option "SecondMonitorHorizSync"     "30-50"
        Option "SecondMonitorVertRefresh"   "60"
        Option "MetaModes" "1152x864, 1024x768; 1024x768, 1024x768;
800x600, 800x600; 640x480, 640x480"        
	Option "TwinViewOrientation" "Clone"
        Option "ConnectedMonitor" "CRT, TV"        
	Option "TVStandard" "PAL-G"        
	Option "TVOutFormat" "COMPOSITE"

Section "Screen"
        Identifier "Screen0"
        Device     "Videocard0"
        Monitor    "Monitor0"
        DefaultDepth     24
        SubSection "Display"
                Viewport   0 0
                Depth     24
                Modes    "1152x864" "1024x768" "800x600" "640x480"

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