我使用 VMware 运行 Ubuntu 每“一小时”我的 ubuntu 就会自动注销 我已经更改了设置，也更改了“超时”，但不起作用 以下文本是我的日志文件 有人遇到过这个问题吗？请帮帮我，谢谢
Feb 28 15:17:01 yangningfan-virtual-machine CRON[82277]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly)
Feb 28 15:17:01 yangningfan-virtual-machine killer[82280]: kill(15, 79341) user=yangnin+ command=notify-osd nice=0
Feb 28 15:17:01 yangningfan-virtual-machine systemd[79135]: Reached target Shutdown.
Feb 28 15:17:01 yangningfan-virtual-machine systemd[79135]: Stopped target Default.
Feb 28 15:17:01 yangningfan-virtual-machine systemd[79135]: Stopped target Basic System.
Feb 28 15:17:01 yangningfan-virtual-machine systemd[79135]: Stopped target Paths.
Feb 28 15:17:01 yangningfan-virtual-machine systemd[79135]: Stopped target Timers.
Feb 28 15:17:01 yangningfan-virtual-machine systemd[79135]: Stopped target Sockets.
Feb 28 15:17:01 yangningfan-virtual-machine systemd[79135]: Starting Exit the Session...