*** This bug is a duplicate of bug 1543192 ***
    https://bugs.launchpad.net/bugs/1543192

Thanks for the links. Note that each of those links themselves contains
links to the main problem reports at the bottom of the page. So you are
experiencing bug 1771485, bug 1543192, bug 1771486 and bug 1771484 at
least.

As we know those bugs are often about login failures and black screen
problems I think it is more useful to continue with those specific bugs
instead of this one. Especially bug 1543192, which other Nvidia users
are reporting.

P.S. Some duplicate bug links don't work because the main bug is marked
as Private. Just let us know which ones and we can make the public...


** This bug has been marked a duplicate of bug 1543192
   Xorg crashed with SIGABRT in OsAbort() from AbortServer() from FatalError() 
from dix_main() ["no screens found"]

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https://bugs.launchpad.net/bugs/1770238

Title:
  [nvidia] Logging in results in a black screen for many minutes after
  which the login screen reappears and I am able to login fine.

Status in gdm3 package in Ubuntu:
  Incomplete
Status in gnome-shell package in Ubuntu:
  Incomplete
Status in mutter package in Ubuntu:
  Incomplete

Bug description:
  ** Ubuntu Bionic; Nvidia GTX 1050 w/`nvidia-390` drivers

  ** Problem: Logging in results in a black screen for many minutes after which 
the login screen reappears and I am able to login fine. The below log seems to 
be the earliest error when this occurs.
  Note: This happened twice today so far, presumably each time I reboot.

  
  May  9 11:04:06 jcormier-MS-7A93 /usr/lib/gdm3/gdm-x-session[2581]: (EE) 
NVIDIA(GPU-0): Failed to acquire modesetting permission.
  May  9 11:04:06 jcormier-MS-7A93 /usr/lib/gdm3/gdm-x-session[2581]: (EE) 
NVIDIA(0): Failing initialization of X screen 0
  May  9 11:04:06 jcormier-MS-7A93 /usr/lib/gdm3/gdm-x-session[2581]: (II) 
UnloadModule: "nvidia"
  May  9 11:04:06 jcormier-MS-7A93 /usr/lib/gdm3/gdm-x-session[2581]: (II) 
UnloadSubModule: "wfb"
  May  9 11:04:06 jcormier-MS-7A93 /usr/lib/gdm3/gdm-x-session[2581]: (II) 
UnloadSubModule: "fb"
  May  9 11:04:06 jcormier-MS-7A93 /usr/lib/gdm3/gdm-x-session[2581]: (EE) 
Screen(s) found, but none have a usable configuration.
  May  9 11:04:06 jcormier-MS-7A93 /usr/lib/gdm3/gdm-x-session[2581]: (EE)
  May  9 11:04:06 jcormier-MS-7A93 /usr/lib/gdm3/gdm-x-session[2581]: Fatal 
server error:
  May  9 11:04:06 jcormier-MS-7A93 /usr/lib/gdm3/gdm-x-session[2581]: (EE) no 
screens found(EE)
  May  9 11:04:06 jcormier-MS-7A93 /usr/lib/gdm3/gdm-x-session[2581]: (EE)

  ** A systemd-logind watchdog seems to be responsible for the login
  screen reappearing

  May  9 11:20:02 jcormier-MS-7A93 systemd[1]: systemd-logind.service: Watchdog 
timeout (limit 3min)!
  May  9 11:20:02 jcormier-MS-7A93 systemd[1]: systemd-logind.service: Killing 
process 1697 (systemd-logind) with signal SIGABRT.
  May  9 11:20:03 jcormier-MS-7A93 systemd[1]: systemd-logind.service: Main 
process exited, code=dumped, status=6/ABRT
  May  9 11:20:03 jcormier-MS-7A93 systemd[1]: systemd-logind.service: Failed 
with result 'watchdog'.

  ** The Xorg.0.log doesn't seem to have any problem finding the screens
  just before the above error.

  29406:May  9 11:03:47 jcormier-MS-7A93 /usr/lib/gdm3/gdm-x-session[1742]: 
(II) NVIDIA(0): NVIDIA GPU GeForce GTX 1050 (GP107-A) at PCI:23:0:0 (GPU-0)
  29407:May  9 11:03:47 jcormier-MS-7A93 /usr/lib/gdm3/gdm-x-session[1742]: 
(--) NVIDIA(0): Memory: 2097152 kBytes
  29408:May  9 11:03:47 jcormier-MS-7A93 /usr/lib/gdm3/gdm-x-session[1742]: 
(--) NVIDIA(0): VideoBIOS: 86.07.2f.00.68
  29409:May  9 11:03:47 jcormier-MS-7A93 /usr/lib/gdm3/gdm-x-session[1742]: 
(II) NVIDIA(0): Detected PCI Express Link width: 16X
  29412:May  9 11:03:47 jcormier-MS-7A93 /usr/lib/gdm3/gdm-x-session[1742]: 
(--) NVIDIA(GPU-0): Acer AL1917 (DFP-0): connected
  29413:May  9 11:03:47 jcormier-MS-7A93 /usr/lib/gdm3/gdm-x-session[1742]: 
(--) NVIDIA(GPU-0): Acer AL1917 (DFP-0): Internal TMDS
  29414:May  9 11:03:47 jcormier-MS-7A93 /usr/lib/gdm3/gdm-x-session[1742]: 
(--) NVIDIA(GPU-0): Acer AL1917 (DFP-0): 330.0 MHz maximum pixel clock
  29415:May  9 11:03:47 jcormier-MS-7A93 /usr/lib/gdm3/gdm-x-session[1742]: 
(--) NVIDIA(GPU-0):

  
  ** Note that I also saw the watchdog kick in while I was logged in and 
working when I was suddenly sent back to the login screen.  I believe that 
lines up with the syslog timestamp below:

  
  May  9 10:31:24 jcormier-MS-7A93 systemd[1]: systemd-logind.service: Watchdog 
timeout (limit 3min)!
  May  9 10:31:24 jcormier-MS-7A93 systemd[1]: systemd-logind.service: Killing 
process 1691 (systemd-logind) with signal SIGABRT.
  May  9 10:31:25 jcormier-MS-7A93 systemd[1]: systemd-logind.service: Main 
process exited, code=dumped, status=6/ABRT
  May  9 10:31:25 jcormier-MS-7A93 systemd[1]: systemd-logind.service: Failed 
with result 'watchdog'.
  May  9 10:31:25 jcormier-MS-7A93 /usr/lib/gdm3/gdm-x-session[2607]: (EE)
  May  9 10:31:25 jcormier-MS-7A93 /usr/lib/gdm3/gdm-x-session[2607]: Fatal 
server error:
  May  9 10:31:25 jcormier-MS-7A93 /usr/lib/gdm3/gdm-x-session[2607]: (EE) 
systemd-logind disappeared (stopped/restarted?)
  May  9 10:31:25 jcormier-MS-7A93 /usr/lib/gdm3/gdm-x-session[2607]: (EE)
  May  9 10:31:25 jcormier-MS-7A93 /usr/lib/gdm3/gdm-x-session[2607]: (EE)

  ** I also experienced the computer reboot when I tried to open the
  calculator app sometime between these two timestamps.

  May  9 13:18:27 jcormier-MS-7A93 org.gnome.Shell.desktop[3311]: Window 
manager warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a 
timestamp of 0 for 0x2605a63 (Find/Repla)
  May  9 13:20:06 jcormier-MS-7A93 systemd-modules-load[437]: Inserted module 
'lp'


   $ sudo ubuntu-drivers devices
  == /sys/devices/pci0000:16/0000:16:00.0/0000:17:00.0 ==
  modalias : pci:v000010DEd00001C81sv00001458sd0000372Cbc03sc00i00
  vendor   : NVIDIA Corporation
  model    : GP107 [GeForce GTX 1050]
  driver   : nvidia-driver-390 - distro non-free recommended
  driver   : xserver-xorg-video-nouveau - distro free builtin

  It seems similar to this bug:
  https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1748656

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: gdm3 3.28.0-0ubuntu1
  ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
  Uname: Linux 4.15.0-20-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.20.9-0ubuntu7
  Architecture: amd64
  CurrentDesktop: ubuntu:GNOME
  Date: Wed May  9 13:57:37 2018
  InstallationDate: Installed on 2018-04-10 (28 days ago)
  InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Beta amd64 (20180404)
  ProcEnviron:
   LANG=en_US.UTF-8
   SHELL=/bin/bash
   TERM=xterm-256color
   XDG_RUNTIME_DIR=<set>
   PATH=(custom, no user)
  SourcePackage: gdm3
  UpgradeStatus: No upgrade log present (probably fresh install)
  mtime.conffile..etc.gdm3.custom.conf: 2018-05-09T11:02:19.660695

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