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When I choose mirror screen under display settings, it only shows the screen on the laptop. I don't know where to begin.

This is ubuntu 13.04 on Asus UX32VD

Output from the requested command:

felix@felix-UX32VD:~$ sudo lshw -c display
[sudo] password for felix: 
       description: VGA compatible controller
       product: 3rd Gen Core processor Graphics Controller
       vendor: Intel Corporation
       physical id: 2
       bus info: pci@0000:00:02.0
       version: 09
       width: 64 bits
       clock: 33MHz
       capabilities: msi pm vga_controller bus_master cap_list rom
       configuration: driver=i915 latency=0
       resources: irq:47 memory:f7400000-f77fffff memory:d0000000-dfffffff ioport:f000(size=64)
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Please, add the output from this command: lshw -c display so we can know more about your system. –  Jorge Suárez de Lis Aug 27 '13 at 16:29
I added the output you requested. Please note that this laptop has "optimus" switching, so it also contains an nvidia chip. –  Felix Aug 27 '13 at 17:59
But it seems that the Optimus is switched off on BIOS setup, right? –  Jorge Suárez de Lis Aug 28 '13 at 7:06

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