Black screen on graphical target X11 after update/upgrade/reboot during boot

This document (7022602) is provided subject to the disclaimer at the end of this document.

Environment

SUSE Linux Enterprise Server 12 Service Pack 2 (SLES 12 SP2)
SUSE Linux Enterprise Server 12 Service Pack 3 (SLES 12 SP3)

Situation

After upgrading from e.g. SLES12SP1 the graphical target shows black screen.
Starting X11 manually e.g. with startx works, changing display manager to xdm and reboot server works, too.

Resolution

Change user IDs to be unique.

Cause

Duplicate UIDs which cause the gdm account service to hang.

Disclaimer

This Support Knowledgebase provides a valuable tool for SUSE customers and parties interested in our products and solutions to acquire information, ideas and learn from one another. Materials are provided for informational, personal or non-commercial use within your organization and are presented "AS IS" WITHOUT WARRANTY OF ANY KIND.

  • Document ID:7022602
  • Creation Date: 25-Jan-2018
  • Modified Date:03-Mar-2020
    • SUSE Linux Enterprise Server

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