우분투 18.04가 갑자기 다시 시작됩니다

지난 며칠부터 우분투 설치가 갑자기 종료되었습니다. 무엇이 원인인지 모르겠습니다.

로그 출력을 수집하고 첨부할 수 있는 몇 가지 단계를 시도했습니다. 누군가 나를 올바른 방향으로 안내할 수 있나요?

reboot   system boot  5.4.0-74-generic Thu Jan  1 05:30 - 17:08 (4541+11:38)
runlevel (to lvl 5)   5.4.0-74-generic Tue Jun  8 16:15 - 17:08  (00:52)
myubuntu    :0           :0               Tue Jun  8 16:16 - 17:08  (00:52)
shutdown system down  5.4.0-74-generic Tue Jun  8 17:08 - 18:04  (00:56)
reboot   system boot  5.4.0-74-generic Tue Jun  8 18:04   still running
runlevel (to lvl 5)   5.4.0-74-generic Tue Jun  8 18:05 - 18:17  (00:12)
myubuntu    :0           :0               Tue Jun  8 18:05 - crash (-4541+12:34)
reboot   system boot  5.4.0-74-generic Thu Jan  1 05:30   still running
runlevel (to lvl 5)   5.4.0-74-generic Tue Jun  8 18:17   still running
myubuntu    :0           :0               Tue Jun  8 18:17    gone - no logout

$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$


myubuntu:~ grep -iv ': starting\|kernel: .*: Power Button\|watching system buttons\|Stopped Cleaning Up\|Started Crash recovery kernel' \
>   /var/log/messages /var/log/syslog /var/log/apcupsd* \
>   | grep -iw 'recover[a-z]*\|power[a-z]*\|shut[a-z ]*down\|rsyslogd\|ups'
grep: /var/log/messages: No such file or directory
/var/log/syslog:Jun  8 08:27:48 myubuntu rsyslogd:  [origin software="rsyslogd" swVersion="8.32.0" x-pid="1092" x-info="http://www.rsyslog.com"] rsyslogd was HUPed
/var/log/syslog:Jun  8 10:05:44 myubuntu kernel: [   16.148709] systemd-journald[435]: File /var/log/journal/876825fc89af4e0a835b842317a84125/system.journal corrupted or uncleanly shut down, renaming and replacing.
/var/log/syslog:Jun  8 10:05:44 myubuntu systemd-fsck[789]: /dev/sda1: recovering journal
/var/log/syslog:Jun  8 10:05:44 myubuntu apparmor[854]: Skipping profile in /etc/apparmor.d/disable: usr.sbin.rsyslogd
/var/log/syslog:Jun  8 10:05:44 myubuntu systemd[1]: Started Update UTMP about System Boot/Shutdown.
/var/log/syslog:Jun  8 10:05:44 myubuntu dbus-daemon[1109]: dbus[1109]: Unknown group "power" in message bus configuration file
/var/log/syslog:Jun  8 10:05:44 myubuntu systemd[1]: Started Restore /etc/resolv.conf if the system crashed before the ppp link was shut down.
/var/log/syslog:Jun  8 10:05:44 myubuntu rsyslogd: imuxsock: Acquired UNIX socket '/run/systemd/journal/syslog' (fd 3) from systemd.  [v8.32.0]
/var/log/syslog:Jun  8 10:05:44 myubuntu rsyslogd: rsyslogd's groupid changed to 106
/var/log/syslog:Jun  8 10:05:44 myubuntu rsyslogd: rsyslogd's userid changed to 102
/var/log/syslog:Jun  8 10:05:44 myubuntu rsyslogd:  [origin software="rsyslogd" swVersion="8.32.0" x-pid="1174" x-info="http://www.rsyslog.com"] start
/var/log/syslog:Jun  8 10:05:44 myubuntu thermald[1153]: sysfs write failed /sys/devices/virtual/powercap/intel-rapl/intel-rapl:0/enabled
grep: /var/log/apcupsd*: No such file or directory
/var/log/syslog:Jun  8 10:05:45 myubuntu NetworkManager[1154]: <info>  [1623126945.0979] Read config: /etc/NetworkManager/NetworkManager.conf (lib: 10-dns-resolved.conf, 20-connectivity-ubuntu.conf, no-mac-addr-change.conf) (run: 10-globally-managed-devices.conf) (etc: 10-ubuntu-fan.conf, default-wifi-powersave-on.conf)
/var/log/syslog:Jun  8 10:05:46 myubuntu systemd[1]: Started Daemon for power management.
/var/log/syslog:Jun  8 10:05:48 myubuntu boltd[1711]: power: force power support: no
/var/log/syslog:Jun  8 10:05:49 myubuntu set-cpufreq[1160]: Setting powersave scheduler for all CPUs
myubuntu:~ 

도움이 될 수 있는 다른 로그가 있으면 제안해 주세요.

아무것도 도움이 되지 않는다면 마지막 옵션은 설치를 완전히 제거하는 것입니다. :(

고마워요 빅