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I've recently upgraded from ubuntu 15.10 to 16.04. Here him my laptop details:

  • Acer Inspire V nitro 17
  • Nvidia GeForce 860M
  • RAM 6Gb

As I was using nvidia driver on 15.10, after the upgrade I couldn't log in again :making a loop back to the login screen I've find an alternative by using :

sudo apt-get purge nvidia*

I was then able to log in but I didn't have all my features working (like live wallpaper photoslide or screenlets) However I've been looking for solutions and one of them was to:

  • reinstall nvidia driver through command lines with

sudo apt-get install nvidia-361

(361 is my version)

  • Disable the secure boot

After that I have now a black screen at logging but I can still hear the sound.

Any help? Thanks.

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  • 2
    Possible duplicate of Graphics issues after installing Ubuntu 16.04 with NVIDIA graphics
    – TheWanderer
    Apr 23, 2016 at 20:12
  • 1
    Thanks. I have tried all of the suggestions, apart the fresh install, and none have worked
    – SAdATT
    Apr 23, 2016 at 20:43
  • What doesn't work? Same issue, or something new?
    – TheWanderer
    Apr 23, 2016 at 20:45
  • No same issue unfortunately.
    – SAdATT
    Apr 23, 2016 at 20:46
  • Uh oh. Did you run sudo apt-get purge nvidia* (ie no - before the *)? That removes system packages. Try running sudo apt-get install -f, but I don't have much hope for it working. You'll probably just have to reinstall.
    – TheWanderer
    Apr 23, 2016 at 20:48

3 Answers 3

Reset to default
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I had

  • purged nvidia drivers

  • logged in using the default graphical mode

  • chosen my nvidia driver version (361 for me) in the Additional Drivers tab located in the Software & Updates window

  • launched the nvidia X server settings and had chosen Intel (Power saving Mode) in the Prime Profiles

  • logged out and in to validate the profile change

  • rebooted and I was able to logged in.

PROBLEMS :

  • When I had checked in the Additional Drivers tab, even if the nvidia driver-361 was checked, it still says that "This device is using an alternative driver". Maybe it's due to the profile I've chosen...I really don't know why.

  • I still can't use the nvidia proprietary drivers normally. So still not solved.

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I ended up doing a complete fresh install. And every thing was ok. But i had some trouble when installing gnome environment and ended up giving it up. So be aware. Thanks.

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the problem, for me, seemed to be that my first install was using legacy, after installing in UEFI and turning off secure boot, i was able to add the nvidia ppa and install nvidia-364. beware nvidia-361

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