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[Launchpad Bug Tracker <1559576@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package nvidia-graphics-drivers-375 -
375.66-0ubuntu1

---------------
nvidia-graphics-drivers-375 (375.66-0ubuntu1) artful; urgency=medium

  * New upstream release:
    - Added support for the following GPUs:
      o GeForce GTX 1080 Ti
      o Quadro P3000
      o Quadro M520
      o TITAN Xp
    - Fixed a bug that could cause EGL applications to crash when
      calling eglInitialize() multiple times on X11-backed displays.
    - Fixed a regression that could cause rendering corruption on a
      monitor connected via DisplayPort upon a modeset event (for
      example, changing resolutions or power cycling the monitor).
    - Fixed a bug that could cause OpenGL applications to crash when
      VT switching between multiple X servers.
    - Fixed a bug that caused the system to become unresponsive after
      resuming from power management suspend/hibernate.  Additional
      symptoms of this bug included display flickering and "Xid 56"
      errors in the kernel log.
    - Fixed a bug that caused backlight brightness to not be
      controllable on some notebooks with DisplayPort internal
      panels.
    - Fixed a bug that left HDMI and DisplayPort audio muted after a
      framebuffer console mode was restored. For some displays, this
      caused the display to remain blank.
    - Fixed a bug that caused audio over DisplayPort to stop working
      when the monitor was unplugged and plugged back in or awoken
      from DPMS power-saving mode.
    - Restored support for the following GPU:
      GRID K520
    - Fixed a regression that caused corruption in certain
      applications, such as window border shadows in Unity, after
      resuming from suspend.
    - Fixed a bug that could cause some applications to crash when
      running with PRIME Sync.
    - Fixed a bug that prevented PRIME Sync from working on notebooks
      with GeForce GTX 4xx and 5xx series GPUs.
    - Fixed a bug that caused OpenGL apps to have excessive CPU usage
      when running with PRIME Sync but without native displays
      enabled.
    - Fixed a bug that could cause PRIME Sync to deadlock in the
      kernel, particularly common on Linux 4.10.
    - Fixed a bug that caused PRIME Sync to run slowly on systems
      with Pascal GPUs.

  [ Alberto Milone ]
  * debian/templates/dkms_nvidia.conf.in:
    - Drop buildfix_kernel_4.10.patch.
    - Limit the amount of cores to a maximum of 16 (LP: #1688431).

  [ Jeremy Bicha ]
  * Depend on xserver-xorg-legacy (LP: #1559576).

 -- Alberto Milone <alberto.milone@xxxxxxxxxxxxx>  Fri, 05 May 2017
15:13:39 +0200

** Changed in: nvidia-graphics-drivers-375 (Ubuntu)
       Status: Triaged => Fix Released

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https://bugs.launchpad.net/bugs/1559576

Title:
  Ubuntu GNOME boots to black screen when using proprietary Nvidia
  drivers

Status in gdm:
  Unknown
Status in Ubuntu GNOME:
  Triaged
Status in gnome-shell package in Ubuntu:
  Fix Released
Status in nvidia-graphics-drivers-375 package in Ubuntu:
  Fix Released
Status in gnome-shell source package in Xenial:
  Triaged
Status in gnome-shell source package in Yakkety:
  Triaged
Status in nvidia-graphics-drivers-375 source package in Yakkety:
  Confirmed

Bug description:
  To fix this now without waiting for the Stable Release Update
  =============================================================
  Install xserver-xorg-legacy

  Impact
  ======
  Many users are unable to use their computers after installing the NVIDIA proprietary drivers to Ubuntu GNOME. Specifically, the log in screen does not load.

  The problem is that many of nvidia-* driver packages do not depend on
  xserver-xorg-legacy which is needed for gdm/gnome-shell to work

  Test Case
  =========
  1. Check that gnome-shell depends on xserver-xorg-legacy.

  2. Optionally, if you have an affected computer, set gdm as the
  default login manager (sudo apt install gdm3; sudo dpkg-reconfigure
  gdm3; sudo reboot). Does the login screen show up? And can you log in
  to gnome (sudo apt install gnome-shell)?

  Regression Potential
  ====================
  Low. Installing a missing dependency should cause no issues; if it does, something is very broken already.

  Other Info
  ==========
  The most minimal fix here for 16.04 LTS and 16.10 is to just have gnome-shell depend on xserver-xorg-legacy. Updating all the nvidia-* packages in Ubuntu and the PPAs would be a lot more trouble; although that would still be a good idea so that this gnome-shell dependency could be dropped in future Ubuntu releases.

  xserver-xorg-legacy is a very small package.

  gdm3 depends on gnome-shell.

  Original Bug Report
  ===================
  Using latest Ubuntu Gnome x64 daily build with all updates installed.
  Lenovo Z70-80 laptop with Nvidia 840M, BIOS updated to latest version, secure boot and other potentially problematic BIOS settings disabled.

  Can only see a black screen instead of a log-in screen after boot completes when proprietary Nvidia drivers are installed.
  Regular Ubuntu works absolutely fine on the same machine with the same driver version. Attempting to use older drivers on Ubuntu Gnome made no difference.

  Bug is affecting more than just me. We were talking about workarounds
  in ubuntuforums. User fthx claims that switching to lightdm fixes the
  issue
  http://ubuntuforums.org/showthread.php?t=2317628&p=13457703#post13457703

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-14-generic 4.4.0-14.30
  ProcVersionSignature: Ubuntu 4.4.0-14.30-generic 4.4.5
  Uname: Linux 4.4.0-14-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia_modeset nvidia
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  Date: Sat Mar 19 23:19:21 2016
  HibernationDevice: RESUME=UUID=4f8fb76c-f99d-4c54-8a67-eed0653d8eb6
  InstallationDate: Installed on 2016-03-19 (0 days ago)
  InstallationMedia: Ubuntu-GNOME 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160318)
  MachineType: LENOVO 80FG
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-14-generic.efi.signed root=UUID=572a19f6-7324-4269-ad36-7ffc9919f7a2 ro noprompt persistent quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-14-generic N/A
   linux-backports-modules-4.4.0-14-generic  N/A
   linux-firmware                            1.156
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 09/22/2015
  dmi.bios.vendor: LENOVO
  dmi.bios.version: ABCN96WW
  dmi.board.asset.tag: NO Asset Tag
  dmi.board.name: Lenovo Z70-80
  dmi.board.vendor: LENOVO
  dmi.board.version: NO DPK
  dmi.chassis.asset.tag: NO Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Lenovo Z70-80
  dmi.modalias: dmi:bvnLENOVO:bvrABCN96WW:bd09/22/2015:svnLENOVO:pn80FG:pvrLenovoZ70-80:rvnLENOVO:rnLenovoZ70-80:rvrNODPK:cvnLENOVO:ct10:cvrLenovoZ70-80:
  dmi.product.name: 80FG
  dmi.product.version: Lenovo Z70-80
  dmi.sys.vendor: LENOVO

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