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[Volkan Sonek <vsonek@xxxxxxxxx>]

Same with my Dell E6520 with HD3000 and NVS4200M. When I switch to
Nvidia I am stuck in a black screen just before the login screen.

The strange thing is that when I connect an external monitor through VGA
port I can login and use the desktop on the external monitor but built-
in display is still blank.

Each time I have to drop back to console and switch back to intel with
prime-select command. to get the screen back.

Just after switching to Nvidia xorg.conf is deleted and if I copy a
previously backed-up xorg.conf file Nvidia works but is broken again
when I make a switch from Intel to Nvidia.

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to nvidia-graphics-drivers-331 in Ubuntu.
https://bugs.launchpad.net/bugs/1362848

Title:
  ubuntu 14.04 after install nvidia binary driver  331.89  black screen
  and freeze

Status in “nvidia-graphics-drivers-331” package in Ubuntu:
  Confirmed

Bug description:
  I'm using Ubuntu 14.04 64bit, after install nvidia binary driver
  331.89 from Additional Drivers application then reboot, it shows black
  screen, no login window, I even can't use ctrl+alt+F2 to switch to
  text mode, then I reboot and go to recovery mode, use 'prime-select
  intel' to switch to intel GPU and reboot, everything is fine, but as
  soon as I switch to nvidia GPU, still same issue.

  OS: Ubuntu 14.04 64bit
  Laptop: HP ENVY 15t Nvidia GeForce GT 740M + Intel HD 4600
  Desktop: Unity
  Kernel: 3.13.0
  CPU: Intel® Core™ i7-4700MQ

  Thanks!

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