Thank you for taking the time to report this bug and helping to make
Ubuntu better. It sounds like some part of the system has crashed. To
help us find the cause of the crash please follow these steps:

1. Look in /var/crash for crash files and if found run:
    ubuntu-bug YOURFILE.crash
Then tell us the ID of the newly-created bug.

2. If step 1 failed then look at https://errors.ubuntu.com/user/ID where
ID is the content of file /var/lib/whoopsie/whoopsie-id on the machine.
Do you find any links to recent problems on that page? If so then please
send the links to us.

3. If step 2 also failed then apply the workaround from bug 994921,
reboot, reproduce the crash, and retry step 1.

Please take care to avoid attaching .crash files to bugs as we are
unable to process them as file attachments. It would also be a security
risk for yourself.

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to xorg-server in Ubuntu.
https://bugs.launchpad.net/bugs/1856846

Title:
  Gnome Xorg sessions fail to start with LDAP users (but Wayland or
  local users work)

Status in xorg-server package in Ubuntu:
  Incomplete

Bug description:
  When trying to login to Gnome with an remote user from an LDAP (LDAP
  is available and connectable when in GDM) using X11, GDM loops around
  three to five times before actually granting access to the desktop.

  This does not happen when
  a) Wayland is used instead of X11 or,
  b) the LDAP server is not reachable during login, using X11, or
  c) a local user is logged in instead, using X11

  The LDAP connection is established using the Univention Domain Join
  Client: https://launchpad.net/~univention-
  dev/+archive/ubuntu/ppa?field.series_filter=bionic

  Do you require additional information?

  Release:
  Description:  Ubuntu 18.04.3 LTS
  Release:      18.04

  GDM3:
  gdm3:
    Installed: 3.28.3-0ubuntu18.04.4
    Candidate: 3.28.3-0ubuntu18.04.4
    Version table:
   *** 3.28.3-0ubuntu18.04.4 500
          500 http://de.archive.ubuntu.com/ubuntu bionic-updates/main amd64 
Packages
          500 http://security.ubuntu.com/ubuntu bionic-security/main amd64 
Packages
          100 /var/lib/dpkg/status
       3.28.0-0ubuntu1 500
          500 http://de.archive.ubuntu.com/ubuntu bionic/main amd64 Packages

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