"GDBus.Error:org.freedesktop.systemd1.NoSuchUnit: Unit not found." is seen in /var/log/messages

Solution In Progress - Updated -


  • The following error is seen in /var/log/messages:

    journal: Failed to connect to ModemManager: Error calling StartServiceByName for org.freedesktop.ModemManager1: GDBus.Error:org.freedesktop.systemd1.NoSuchUnit: Unit not found.
  • What causes this message to be output?


  • Red Hat Enterprise Linux 7
  • Desktop Environment

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