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I have an ASUS A55V which comes with the infamous nVidia Optimus chipset. I installed bumblebee, and tested it correctly with optirun glxspheres. The problem is that I cannot change the screen resolution, from both the nVidia Panel and the Ubuntu Display utility, which is fixed at 640x480. The strange thing is that if I attach an external monitor, it's correctly detected and I can configure it normally with a decent resolution.

Laptop screen's resolution is fixed no matter if the external monitor is plugged in or not. And a curious thing is that even if the external monitor is unplugged, it still shows at the nVidia settings...

Any hints on how to solve this?

EDIT: using xrandr seems to work to add a new resolution and set it up, but the display is limited to the center of the screen. Here's a screenshot so you know what I mean:

enter image description here

Thanks in advance

3 Answers 3

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The reason is that you certainly installed NVIDIA oficial driver... This computer is using optimus nvidia technology then you have to use bumblebee linux packages http://bumblebee-project.org/

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  • Nope, it was with bumblebee. I already fixed this, thanks for the answer anyway :)
    – m0skit0
    Aug 31, 2012 at 14:26
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If the xorg file exists, remove that and reboot. (it would be better if you remove xrandr. )

sudo rm /etc/X11/xorg.conf

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  • That was it, thanks! But it freezes on startup... :(
    – m0skit0
    Aug 9, 2012 at 9:41
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Looks like setting up a 16:9 resolution from the Display panel (1360x768) after adding it with xrandr works, but not directly from xrandr...

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