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I have an ATI radeon hd 2600 in my Laptop. I connected a 23" external monitor via VGA. But when I enable dualmonitor in System-Preferences-Monitors the internal monitor of my laptop is set as the default monitor. Is there a way to change the default monitor to the external monitor without disabling the internal monitor?

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I think a xrandr --output VGA-0 --primary did it...

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is that permanent or session only? – Tobias Kienzler Jan 12 '11 at 11:00

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