Dual display with Geforce 9400M. Native resolution not available
I am running Ubuntu 9.10 on my Macbook Air, which has a Nvidia Geforce 9400M videocard. I am using the restricted driver (185).
The problem is that I can use my Dell WFP2408WFP as external display but only with a resolution of 1600x1200 and not its native 1920x1200 resolution (which the Macbook Air does support).
I am using the Nvidia tool for setting display settings, but the strange thing is that under the 'GPU' section the Dell display is said to have:
native resolution: 1920x1200
best fit resolution: 1920x1200
frontend resolution: 1600x1200
backend resolution: 1920x1200
Why is it using the 1600x1200 resolution and is there a way I can change it?
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