[Bug 1882034] Re: cannot start X session with NIS account

[Ketiw Simplistic]

This is a very serious bug. I tested with couple computers to which only
addition after standard installation was NIS and NFS and the error is
always there. Local users can login to gdm3 session but NIS users cannot
and the error is always the same. If this is a single issue I could live
with it replacing gdm3 with lightdm  but I am sure this will create
other problems and I also found that the NIS users cannot open
teamviewer session.

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Title:
  cannot start X session with NIS account

Status in systemd package in Ubuntu:
  Incomplete

Bug description:
  When login with a NIS account, X does not start, or more precisely it
  starts and exits immediately.

  Only errors in logs is:
   (EE) systemd-logind: failed to get session: PID 4335 does not belong to any known session

  X11/gdm login works fine with local accounts.

  SSH/terminal console login with NIS accounts works fine.

  /etc/X11/Xwrapper.config:
    allowed_users=anybody

  I've seen several reports of such problems under other versions (eg
  19.10), but no working solutions was found. It seems that the problem
  is the same with lightdm.

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: gdm3 3.34.1-1ubuntu1
  ProcVersionSignature: Ubuntu 5.4.0-29.33-generic 5.4.30
  Uname: Linux 5.4.0-29-generic x86_64
  ApportVersion: 2.20.11-0ubuntu27.2
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: ubuntu:GNOME
  Date: Thu Jun  4 08:59:25 2020
  InstallationDate: Installed on 2019-11-26 (190 days ago)
  InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
  SourcePackage: gdm3
  UpgradeStatus: Upgraded to focal on 2020-04-24 (40 days ago)

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