systemd: Cannot add dependency job for unit display-manager.service
Issue
- The system failed to boot into desktop environment.
- Below messages printed in
/var/log/messages.
systemd: Cannot add dependency job for unit display-manager.service, ignoring: Unit not found.
or
systemd: Cannot add dependency job for unit display-manager.service, ignoring: Unit display-manager.service failed to load: No such file or directory.
Environment
- Red Hat Enterprise Linux 7
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