How to get Geforce GTX 750ti working on Linux mint Cinnamon 17.1, 17.2 & 18

4K monitor with Geforce GTX 750ti on linux mint! Was able to get 4k display on mint 17.1, 17.2  and 18 using following steps.

Steps:

1. Execute sudo apt-get install build-essential linux-headers-$(uname -r) 
2. Update grub to fix full screen text mode
1. Execute sudo gedit /etc/default/grub
2. Modify GRUB_CMDLINE_LINUX_DEFAULT=”quiet splash” line to GRUB_CMDLINE_LINUX_DEFAULT=”quiet splash nomodeset”
3. Save 
4. Execute sudo update-grub
3. Select the correct driver from http://www.geforce.com/drivers and download it 
4. Press ctrl+alt+F1 to switch to the command prompt
5. Execute sudo service mdm stop to stop graphics interface
6. Execute following command to the downloaded driver file to make it executable sudo chmod +x NVIDIA-Linux-xxxxxxxx.run
7. Execute the driver sudo sh NVIDIA-Linux-xxxxxxxx.run
8. Start the graphical interface sudo service mdm start 

 Enjoy!

Reference: http://linuxbeastmagazine.blogspot.com/2014/10/how-to-install-geforce-gtx-750-on-linux.html