Nvidia 840M Driver Installation – Acer E5-571 Guide

drivershybrid-graphicsnvidiaunityxorg

After a lot of trying and installing I don't know anything more to I can do to get this running.

I am having trouble installing the current Nvidia proprietary driver 346.35 on a Nvidia 840M graphics card, in combinations with an Intel i5-4210U cpu, kernel 3.13.0-45 on Ubuntu 14.04.1 64 bit

After installing the driver (manually from Nvidia driver page) and restarting lightdm / rebooting I get to the login screen and everything is looking normal. Once I login the screen resolution gets distorted and nothing more than "System program problem detected" is displayed, Unity / Compiz do not load.

I also tried installing the NVIDIA drivers from edgers ppa:xorg-edgers/ppa. After a reboot you hear the Ubuntu starting sound but the screens stays black.

The only thing you can do in both cases is ctrl+alt+ F1 and uninstall all nvidia drivers to get the Ubuntu desktop loading.

Solutions that did not work:

I've never had any trouble installing the proprietary Nvidia driver on linux before, maybe someone can help me here. The image below shows the bad screen resolution after login.

Bad screen resolution after login

Best Answer

Okay I have finally found a solution for the problem!

Thanks to these threads:

The solution is:

When the computer has booted up and you see the black screen press ctrl+alt+F1 and log in with your user account.

Edit your xorg.conf with sudo nano /etc/X11/xorg.conf

Find the line that says: Section "Screen"

Insert a new line that says UseDisplayDevice "DFP"

Save with ctrl+o+Enter and exit with ctrl+x

Next install bumblebee with sudo apt-get install bumblebee.

Then reboot sudo reboot

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