Cannot install nvidia drive for ubuntu 14.04

[lee_3]

I am using Ubuntu 14.04 (64 bit) with kernel version is 3.19.0-20-generic. And my nvidia is


01:00.0 VGA compatible controller [0300]: NVIDIA Corporation GK107M [GeForce GT 650M] [10de:0fd1] (rev a1) (prog-if 00 [VGA controller])
Subsystem: Samsung Electronics Co Ltd Device [144d:c0d1]
Flags: bus master, fast devsel, latency 0, IRQ 16
Memory at f6000000 (32-bit, non-prefetchable) [size=16M]
Memory at e0000000 (64-bit, prefetchable) [size=256M]
Memory at f0000000 (64-bit, prefetchable) [size=32M]
I/O ports at e000 [size=128]
Expansion ROM at f7000000 [disabled] [size=512K]
Capabilities: <access denied>
Kernel driver in use: nvidia

That mean it is GeForce GT 650M. Hence, I went to [nvidia search][1] to check which nvidia is good for my laptop. I found version 346.72. However, when I install it. I cannot log-in my computer. It allway repeat log-in screen when I login. I need to uninstall it. Then it can log-in again. What is my problem? How to resolve it?
I also tried do with other method such as


$ sudo add-apt-repository ppa:xorg-edgers/ppa -y
$ sudo apt-get update
# install the latest version
$ sudo apt-get install nvidia-current

But it shown that (Note that I install 304 version is lastest version). If i install 304 version, I can used it and login my computer. Otherwise, when I used newest version such as 346. My computer is only black screen, I must go to Ctrl+Alt+F1 to delete it

So, My problem is how to install the newest driver version for my computer? Thanks you in advance



[1]: http://www.nvidia.com/Download/index.aspx
[2]: http://i.stack.imgur.com/onbUc.png

[lee_3]

I am installing nvidia version 340. My ubuntu version 14.04 with kernel is 3.19.0-20-generic. My nvidia is GeForce GT 650M. I install that nvidia version because I have schedule to install CUDA 6.5 and that cuda only work for that nvidia version.I have one problem that is after installing nvidia and restart. After login. I cannot go to main GUI( It appears black screen). However, when I uninstall it. It can go to my GUI. Have any way to resolve it. I tried step by step as following

First of all I removing all nvidia drivers.


sudo apt-get purge nvidia*

For Ubuntu 14.04 the default and preferred driver is nvidia-331.
It can be installed by


sudo apt-get install nvidia-340

As an option I can upgrade kernel and install newer drivers.
Upgrade kernel to 3.19


sudo apt-get install linux-generic-lts-vivid

reboot
Then install nvidia-340 from xorg-edgers


sudo add-apt-repository ppa:xorg-edgers/ppa
sudo apt-get update
sudo apt-get install nvidia-346 nvidia-prime nvidia-settings
sudo add-apt-repository -r ppa:xorg-edgers/ppa

This is my `dkms status`



bbswitch,0.7, 3.19.0-20-generic , x86_64: installed
nvidia-340, 340.76, 3.19.0-20-generic, x_86_64: installed


Thanks

[howefield]

Threads merged, one on the same topic really is sufficient.

[lee_3]

Can you see my problem and resolve help me?

[NoWayWin8]

I'm guessing the problem is caused by ownership of the .Xauthority or .xinputrc in the Home directory getting changed to root instead of the user.

Fix it from the terminal:
(replace "USER" with your username)


$ cd /home/USER
$ sudo chown USER *
$ sudo reboot