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On a machine that has several Graphicscards we used to do

startx -- -config

to select the configuration that outputs Graphics to the desired screens. Now with Ubuntu 12.04 startx is not really supported anymore. How can I switch between multiple X11 configurations using lightdm or unity?

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closed as too localized by Eric Carvalho, Seth, Thomas W., Basharat Sialvi, Luis Alvarado May 8 '13 at 2:31

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Which is your video card and driver? –  desgua May 12 '12 at 14:26
    
we use a cluster of several graphics-workstations with both geforce and quadro cards all running proprietary nvidia drivers (v295.xx). –  Karl Frisk May 21 '12 at 21:01
    
Nobody? Should I add this to launchpad as a regression? It used to work, now it does not. –  Karl Frisk Jun 11 '12 at 21:47

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