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[Launchpad Bug Tracker <1416939@xxxxxxxxxxxxxxxxxx>]

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: nvidia-graphics-drivers-331 (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1416939

Title:
  Black screen when in nvidia mode after updating to kernel  3.13.0-45

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

Bug description:
  After I updated to kernel 3.13.0-45, I cannot use nvidia anymore. Whenever I try to switch to nvidia mode, my laptop screen goes black. I cannot even switch to terminal mode using ctrl+alt+F1. However, I can type the following without seeing anything on the screen: 
  first type my password to login and press enter (without seeing anythin). wait a little bit.
  ctrl+alt+T
  sudo prime-select intel (then password and hit Enter)
  sudo reboot

  The laptop reboots and then I get my screen again in intel mode. So it seems that while not being able to see anything with the black screen, everything is still working in background.
  This happens whatever the version of nvidia I am using.

  My laptop is a Lenovo T430. I am using ubuntu 14.04 and I am also
  using nvidia-prime. My kernel version is 3.13.0-45.

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