*Ubuntu
 Advanced options for Ubuntu
 Memory test (memtest86+)
 Memory test (memtest86+, serial console 115200)

Ubuntu, with Linux 3.13.0-34-generic
Ubuntu, with Linux 3.13.0-34-generic (recovery mode)
Ubuntu, with Linux 3.5.0-54-generic
Ubuntu, with Linux 3.5.0-54-generic (recovery mode)
Ubuntu, with Linux 3.5.0-47-generic
Ubuntu, with Linux 3.5.0-47-generic (recovery mode)
Ubuntu, with Linux 3.5.0-46-generic
Ubuntu, with Linux 3.5.0-46-generic (recovery mode)
Ubuntu, with Linux 3.5.0-44-generic
Ubuntu, with Linux 3.5.0-44-generic (recovery mode)
Ubuntu, with Linux 3.5.0-42-generic
Ubuntu, with Linux 3.5.0-42-generic (recovery mode)
Ubuntu, with Linux 3.5.0-41-generic
Ubuntu, with Linux 3.5.0-41-generic (recovery mode)
Ubuntu, with Linux 3.5.0-40-generic
Ubuntu, with Linux 3.5.0-40-generic (recovery mode)
Ubuntu, with Linux 3.5.0-23-generic
Ubuntu, with Linux 3.5.0-23-generic (recovery mode)

sudo ./usr/bin/nvidia-installer --uninstall

startx

Failed to insert nvidia. No such symbol

sudo apt-get install --reinstall xorg

(EE) module ABI major version (6) doesn't match the server's version (8)
xinit: connection to X server lost
waiting for X server to shut down (EE) Server terminated successfully (0). Closing log file.

sudo apt-get install nvidia-current-updates

xauthL: timeout in locking authority file ~/.Xauthority

waiting for X server to accept connections

No protocol specified

(EE) module ABI major version (6) doesn't match the server's version (8)
xinit: connection to X server lost
waiting for X server to shut down (EE) Server terminated successfully (0). Closing log file.