Ubuntun 14.04 and Optimus prime ERROR

4Qman · 23 Dec 2014 at 11:01

I have a i7 laptop using GTX 765M GPU.

When i install ubuntun 14.04 it works and i can switch between my intel onboard gfx and my 765M.

however after i restart and try again it gives me an error and from that moment on will never work again.

Does anyone have or had this issue, ive followed various guides but still unable to fix.

OhEsEcks · 23 Dec 2014 at 12:01

Knowing exactly what error you're getting would be a good start.

russell664 · 23 Dec 2014 at 12:39

Do you have any prohibitory drivers installed for the Nvidia GPU at all?

4Qman · 23 Dec 2014 at 14:10

OhEsEcks said:
Knowing exactly what error you're getting would be a good start.

the issue is when you switch between intel onboard and nvidia 765m gpu.

russell664 said:
Do you have any prohibitory drivers installed for the Nvidia GPU at all?

No i dont mate.

It does work as its fine on frush install of ubuntun. works fine, then somewhere along the line its getting messed up.

ive tried a few guides as others had the same error but i cant sort it.

4Qman · 23 Dec 2014 at 16:44

Ive just tried this guide but still no luck.
http://eternalvoid.net/tutorials/linux-optimus-gtx765m/

4Qman · 10 Jan 2015 at 14:15

Has anyone else experienced this issue.

CEUOTC · 21 Jan 2015 at 22:33

Never had that issue before, l found the following method worked for me:

1. sudo add-apt-repository ppa:xorg-edgers/ppa -y

2. sudo apt-get update

3. Then run the driver app, install the propriety driver and reboot once installed.

Or

4. sudo apt-get install nvidia-current

5. Reboot.

Sorry for late reply.

I use the info on this site for this.

How to install the latest Nvidia drivers on Ubuntu 14.04 Trusty Tahr