As i had windows 10 with GeForce graphics card, I installed ubuntu 14.04 LTS uninstalling windows. Now I have an issue (i.e) when I pass this command
lspci | grep VGA
my results be like
00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated Graphics Controller (rev 0b)
it isn't showing my NVidia grpahics driver. I tried all the answers given in ubuntu forums and stack exchanges still i couldn't get rid off it. Need solved solutions.
Open a terminal and execute :
lspci -k | grep -EA2 'VGA|3D'
Output shows something like :
00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller (rev 06)
Subsystem: CLEVO/KAPOK Computer Device 3501
Kernel driver in use: i915
01:00.0 3D controller: NVIDIA Corporation GM107M [GeForce GTX 860M] (rev a2)
Subsystem: CLEVO/KAPOK Computer Device 3501
Kernel driver in use: nvidia
Now you can see all the graphics drivers currently being in use.
In case it does not show Kernel driver in use: nvidia ...
Install the NVIDIA drivers and Optimus support - execute :
sudo apt-get update
sudo apt-get install nvidia-352 nvidia-prime
sudo reboot
Update adressing your response that you have issues with the drivers :
Step 1 : Uninstall every NVIDIA related software that is currently installed.
Highlight the Ubuntu entry in the GRUB boot menu and press the E key.
Add nouveau.modeset=0 to the end of the linux line - press F10 to boot.
On the login screen press Ctrl+Alt+F1
Enter user name and password - execute :
sudo apt-get purge nvidia*
sudo reboot
Step 2 : Install the latest official NVIDIA drivers that support NVIDIA 820M.
Highlight the Ubuntu entry in the GRUB boot menu and press the E key.
Add nouveau.modeset=0 to the end of the linux line - press F10 to boot.
On the login screen press Ctrl+Alt+F1
Enter user name and password - execute :
sudo add-apt-repository ppa:graphics-drivers/ppa
sudo apt-get update
sudo apt-get install nvidia-361 nvidia-prime
sudo reboot
lspci | grep 3D