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I installed NVidia current driver from ubuntu software center then i started to see that my monitor resolution is not fixed!! so that every time i log in to my machine i have to change the resolution.

but starting from yesterday, all options have been disappeared & i have one option only 640*480.

i have the problem shown in the link here: which i think is the cause of this. Any help please, thank you in advance.

specifications: OS: ubuntu 12.04 precise laptop: Dell inspiron N5110 GPU: nvidia GeForce 525M

Thanks again, yours.

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isn't it optimus enabled laptop? (ie dual grpahics card.) – Web-E Jun 14 '12 at 10:25
Waw! this is a quick reply :D i dunno, but i think yes cuz i have intel & nvidia as GPUs. if so, what that suppose to mean? – BaderSur Jun 14 '12 at 10:31
That mean, never install nvidia-current directly. As it nvidia doesn't support optimus in linux. Follow my answer. If everything ok, accept that answer and post problems if not – Web-E Jun 14 '12 at 11:42
@Web-E ahaa, thanks brother for clarification! i'll follow your answer & let you know if anything happen :) – BaderSur Jun 14 '12 at 12:17
@Web-E I followed your instructions but unfortunately no thing has changed! the screen resolution is still 640*480 & i don't any options else. – BaderSur Jun 14 '12 at 12:32
up vote 0 down vote accepted

First remove current nvidia driver.

sudo apt-get remove nvidia-current

Instruction for installing Bumblebee to turn off discrete GPU and enable only when required

  1. Type the following in terminal,

    sudo add-apt-repository ppa:bumblebee/stable


    sudo apt-get update

  2. To install Bumblebee using the proprietary nvidia driver:

    sudo apt-get install bumblebee bumblebee-nvidia

  3. Run following

    sudo usermod -a -G bumblebee $USER

  4. Reboot.

If you just want to disable nvidia card, no need to learn followings

Usage Instruction :

To run a program with nvidia card, use optirun command prefixed in terminal. Like to run glxspheres with nvidia card type

optirun glxspheres

To run firefox type : optirun firefox &

Note: If you intend to run 32-bit programs like Wine and using Ubuntu 11.10 Oneiric or later, install 32-bit libraries with: sudo apt-get install virtualgl-libs:i386 libgl1-mesa-glx:i386 libc6:i386

Linked Questions:

How well will Nvidia Optimus cards be supported in 12.04?

How well do laptops with Nvidia Optimus work?

Can't use nvidia card/driver on optimus notebook

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