Ubuntu 20.04 LTS가 설치된 노트북에서 수십 분/시간 동안 자리를 비우면 로그아웃되는 경우가 가끔 있습니다. 온라인으로 검색한 결과 이러한 동작의 흔적을 에서 찾을 수 있다는 것을 발견했습니다 /var/log/auth.log. 로그아웃이 발생한 것으로 생각되는 시간은 다음과 같습니다.
... more of the same ...
Aug 17 13:35:01 <_my_user_> CRON[3157490]: pam_unix(cron:session): session opened for user root by (uid=0)
Aug 17 13:35:01 <_my_user_> CRON[3157490]: pam_unix(cron:session): session closed for user root
Aug 17 13:45:01 <_my_user_> CRON[3158676]: pam_unix(cron:session): session opened for user root by (uid=0)
Aug 17 13:45:01 <_my_user_> CRON[3158676]: pam_unix(cron:session): session closed for user root
Aug 17 13:55:01 <_my_user_> CRON[3159724]: pam_unix(cron:session): session opened for user root by (uid=0)
Aug 17 13:55:01 <_my_user_> CRON[3159724]: pam_unix(cron:session): session closed for user root
Aug 17 14:03:49 <_my_user_> dbus-daemon[945]: [system] Rejected send message, 0 matched rules; type="method_return", sender=":1.83" (uid=1000 pid=2383 comm="/usr/bin/pulseaudio --daemonize=no --log-target=jo" label="unconfined") interface="(unset)" member="(unset)" error name="(unset)" requested_reply="0" destination=":1.2" (uid=0 pid=940 comm="/usr/lib/bluetooth/bluetoothd " label="unconfined")
Aug 17 14:03:54 <_my_user_> polkitd(authority=local): Unregistered Authentication Agent for unix-session:3 (system bus name :1.94, object path /org/freedesktop/PolicyKit1/AuthenticationAgent, locale en_US.UTF-8) (disconnected from bus)
Aug 17 14:04:31 <_my_user_> gdm-password]: pam_unix(gdm-password:session): session closed for user <_my_user_>
Aug 17 14:04:31 <_my_user_> systemd-logind[969]: Session 3 logged out. Waiting for processes to exit.
Aug 17 14:04:41 <_my_user_> systemd-logind[969]: Removed session 3.
Aug 17 14:05:01 <_my_user_> CRON[3166501]: pam_unix(cron:session): session opened for user root by (uid=0)
Aug 17 14:05:01 <_my_user_> CRON[3166501]: pam_unix(cron:session): session closed for user root
Aug 17 14:15:01 <_my_user_> CRON[3166529]: pam_unix(cron:session): session opened for user root by (uid=0)
Aug 17 14:15:01 <_my_user_> CRON[3166529]: pam_unix(cron:session): session closed for user root
Aug 17 14:17:01 <_my_user_> CRON[3166534]: pam_unix(cron:session): session opened for user root by (uid=0)
Aug 17 14:17:01 <_my_user_> CRON[3166534]: pam_unix(cron:session): session closed for user root
Aug 17 14:25:01 <_my_user_> CRON[3166554]: pam_unix(cron:session): session opened for user root by (uid=0)
... more of the same ...
Aug 17 15:30:01 <_my_user_> CRON[3166698]: pam_unix(cron:session): session opened for user root by (uid=0)
Aug 17 15:30:01 <_my_user_> CRON[3166698]: pam_unix(cron:session): session closed for user root
Aug 17 15:35:01 <_my_user_> CRON[3166711]: pam_unix(cron:session): session opened for user root by (uid=0)
Aug 17 15:35:01 <_my_user_> CRON[3166711]: pam_unix(cron:session): session closed for user root
Aug 17 15:45:01 <_my_user_> CRON[3166743]: pam_unix(cron:session): session opened for user root by (uid=0)
Aug 17 15:45:01 <_my_user_> CRON[3166743]: pam_unix(cron:session): session closed for user root
Aug 17 15:49:17 <_my_user_> gdm-password]: gkr-pam: unable to locate daemon control file
Aug 17 15:49:17 <_my_user_> gdm-password]: gkr-pam: stashed password to try later in open session
Aug 17 15:49:17 <_my_user_> gdm-password]: pam_unix(gdm-password:session): session opened for user <_my_user_> by (uid=0)
Aug 17 15:49:17 <_my_user_> systemd-logind[969]: New session 2742 of user <_my_user_>.
...
내 추측은 다음과 같습니다
Session 3 logged out시스템이 열려 있는 모든 그래픽 세션 프로그램을 자동으로 닫고 로그아웃하는 시간입니다.New session 2742 of user <_my_user_>다시 로그인할 때 기록된 메시지입니다(<_my_user_>명백한 이유로 교체됨).
이 행동에 대한 책임은 무엇입니까?
이런 일은 자주 발생하지 않으며 때로는 하루 동안 컴퓨터를 무인 상태로 두었는데 로그아웃이 발생하지 않는 경우도 있습니다. 때로는 한 시간 이내에 발생합니다.