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I am trying to connect second display using HDMI connector to DELL laptop. But, Ubuntu is not detecting it, neither disper,nor arandr.

Some suggestions how to make it work?

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Some more info would be nice. Like ubuntu version etc. Since I found that since ubuntu 12.04, the screen detection works. –  Dr_Bunsen Nov 2 '12 at 9:50
    
You are right I have Distributor ID: Ubuntu 12.04.1 LTS. I will check is it working after upgrade and let you know. Thanks for advice. –  biljkus Nov 2 '12 at 15:07
    
Also, what laptop? maybe link or state the "version". –  Dr_Bunsen Nov 2 '12 at 15:11
    
I upgraded the Ubuntu to 12.10 but the second display detection is still not working. The laptop is: DELL XPS17. –  biljkus Nov 7 '12 at 10:37
    
Well, maybe you have disabled it with the fn keys. If my memory is correct, press fn + F6 –  Dr_Bunsen Nov 7 '12 at 16:44
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