Fedora - 왼쪽 상단 패널에 배터리 표시기가 표시되지 않음

배터리 표시 아이콘은 상단 패널에 표시되지 않습니다. 저는 GNOME을 사용하여 Fedora 30을 실행하고 있습니다. 다시 시작하려고 시도했지만 upower실패했습니다.

$ sudo systemctl restart upower

Job for upower.service failed because the control process exited with error code.
See "systemctl status upower.service" and "journalctl -xe" for details.

$ systemctl status upower.service

● upower.service - Daemon for power management
   Loaded: loaded (/usr/lib/systemd/system/upower.service; disabled; vendor preset: enabled)
   Active: failed (Result: exit-code) since Wed 2019-06-12 20:10:41 IST; 10s ago
     Docs: man:upowerd(8)
  Process: 11765 ExecStart=/usr/libexec/upowerd (code=exited, status=226/NAMESPACE)
 Main PID: 11765 (code=exited, status=226/NAMESPACE)

Jun 12 20:10:41 localhost.localdomain systemd[1]: upower.service: Service RestartSec=100ms expired, scheduling restart.
Jun 12 20:10:41 localhost.localdomain systemd[1]: upower.service: Scheduled restart job, restart counter is at 5.
Jun 12 20:10:41 localhost.localdomain systemd[1]: Stopped Daemon for power management.
Jun 12 20:10:41 localhost.localdomain systemd[1]: upower.service: Start request repeated too quickly.
Jun 12 20:10:41 localhost.localdomain systemd[1]: upower.service: Failed with result 'exit-code'.
Jun 12 20:10:41 localhost.localdomain systemd[1]: Failed to start Daemon for power management.
Jun 12 20:10:44 localhost.localdomain systemd[1]: upower.service: Start request repeated too quickly.
Jun 12 20:10:44 localhost.localdomain systemd[1]: upower.service: Failed with result 'exit-code'.
Jun 12 20:10:44 localhost.localdomain systemd[1]: Failed to start Daemon for power management.

업데이트 1:

journalctl -xe

-- Automatic restarting of the unit upower.service has been scheduled, as the result for
-- the configured Restart= setting for the unit.
Jun 13 08:44:23 localhost.localdomain systemd[1]: Stopped Daemon for power management.
-- Subject: A stop job for unit upower.service has finished
-- Defined-By: systemd
-- Support: https://lists.freedesktop.org/mailman/listinfo/systemd-devel
-- 
-- A stop job for unit upower.service has finished.
-- 
-- The job identifier is 4358 and the job result is done.
Jun 13 08:44:23 localhost.localdomain audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=upower comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=suc>
Jun 13 08:44:23 localhost.localdomain audit[1]: SERVICE_STOP pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=upower comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=succ>
Jun 13 08:44:23 localhost.localdomain systemd[1]: Starting Daemon for power management...
-- Subject: A start job for unit upower.service has begun execution
-- Defined-By: systemd
-- Support: https://lists.freedesktop.org/mailman/listinfo/systemd-devel
-- 
-- A start job for unit upower.service has begun execution.
-- 
-- The job identifier is 4358.
Jun 13 08:44:23 localhost.localdomain audit[6540]: AVC avc:  denied  { remount } for  pid=6540 comm="(upowerd)" scontext=system_u:system_r:init_t:s0 tcontext=system_u:object_r:snappy_snap_t:s0 tclass=filesystem permissive=0
Jun 13 08:44:23 localhost.localdomain systemd[6540]: upower.service: Failed to set up mount namespacing: Permission denied
Jun 13 08:44:23 localhost.localdomain systemd[6540]: upower.service: Failed at step NAMESPACE spawning /usr/libexec/upowerd: Permission denied
-- Subject: Process /usr/libexec/upowerd could not be executed
-- Defined-By: systemd
-- Support: https://lists.freedesktop.org/mailman/listinfo/systemd-devel
-- 
-- The process /usr/libexec/upowerd could not be executed and failed.
-- 
-- The error number returned by this process is ERRNO.
Jun 13 08:44:23 localhost.localdomain systemd[1]: upower.service: Main process exited, code=exited, status=226/NAMESPACE
-- Subject: Unit process exited
-- Defined-By: systemd
-- Support: https://lists.freedesktop.org/mailman/listinfo/systemd-devel
-- 
-- An ExecStart= process belonging to unit upower.service has exited.
-- 
-- The process' exit code is 'exited' and its exit status is 226.
Jun 13 08:44:23 localhost.localdomain systemd[1]: upower.service: Failed with result 'exit-code'.
-- Subject: Unit failed
-- Defined-By: systemd
-- Support: https://lists.freedesktop.org/mailman/listinfo/systemd-devel
-- 
-- The unit upower.service has entered the 'failed' state with result 'exit-code'.
Jun 13 08:44:23 localhost.localdomain systemd[1]: Failed to start Daemon for power management.
-- Subject: A start job for unit upower.service has failed
-- Defined-By: systemd
-- Support: https://lists.freedesktop.org/mailman/listinfo/systemd-devel
-- 
-- A start job for unit upower.service has finished with a failure.