Ubuntu 16.04 LTS Running low-graphics mode [closed]

Question

This happens when I try to install/update the Nvidia driver on my system using cuda_8.0.61.2_linux. Prompt dialog

Answer 1

This could be caused by conflicting x11 libs. Some of you might also experience similar issue on a different or older version of Ubuntu.
Prompt dialog

Perform Ctrl+Alt+F1 then a console will be displayed.
Enter your credentials...

(1) You need to reset the "lightdm" with the following:

sudo rm /etc/lightdm/lightdm.conf
sudo ucf -p /etc/lightdm/lightdm.conf
sudo apt-get install --reinstall lightdm

(2) Then re-install "recommended driver" nvidia (can be found on your system current nvidia drivers)

sudo ubuntu-drivers devices  

You will see something like:

...
...
driver  :  nvidia-384 - distro non-free recommended
...  

You will use the nvidia specified as recommended which is on this example is nvidia-384
Finally, perform:

sudo apt-get install nvidia-384  

And reboot the system.