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[Marcin Sągol <1492864@xxxxxxxxxxxxxxxxxx>]

Kubuntu 15.10 loading nvidia profile also fails. It jums back to intel
profile or if somehow use nvidia, booting ends with black screen where
sddm should be loaded.

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https://bugs.launchpad.net/bugs/1492864

Title:
  Fails to load nvidia, fails to fallback to intel properly

Status in nvidia-prime package in Ubuntu:
  Confirmed

Bug description:
  Fresh install of 15.10, image of 09/06, only synaptic installed 
  Hardware is  i7-4700MQ CPU, Intel® Haswell Mobile Nvidia GT770m

  Initial bootup/ login is fine
  Installed nvidia-352, install went fine, will attach log
  Rebooted to a black greeter screen (heard sound
  Logged in blindly, black screen

  rebooted, at black greeter screen went to tty, purged nvidia*, rebooted.
  Result was a login with no compiz, no unity as the OpenGl plugin was not loaded nor from some further tests could be.
  The only way forward was to remove ~/.config/dconf/user from a tty, then reboot

  Same machine runs nvidia driver via nvidia-prime fine in 14.04.3 &
  15.04

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: nvidia-prime 0.8.1
  ProcVersionSignature: Ubuntu 4.2.0-7.7-generic 4.2.0
  Uname: Linux 4.2.0-7-generic x86_64
  ApportVersion: 2.18-0ubuntu9
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Sun Sep  6 20:04:35 2015
  InstallationDate: Installed on 2015-09-06 (0 days ago)
  InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Alpha amd64 (20150906)
  SourcePackage: nvidia-prime
  UpgradeStatus: No upgrade log present (probably fresh install)

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