从最近几天开始，我的 ubuntu 安装突然关闭。我不知道是什么原因造成的。
我尝试了一些我可以收集的步骤，并附加了日志输出。有人可以引导我走向正确的方向吗？
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
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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:~
如果有其他日志可能有帮助，请提出建议。
如果没有任何帮助，那么我认为我的最后一个选择是完全删除安装:(
谢谢维克
答案1
systemd-fsck[789]: /dev/sda1: 恢复日志
你有一个不干净的关闭，所以这要么是一些非常糟糕的软件，要么是硬件中的一些奇怪的东西。
最可能的罪魁祸首是电源、RAM 和 CPU。这三者都可能受到天气的负面影响。
尝试使用 lm_sensors 检查 CPU 温度。此外，如果可能的话，将系统日志传输到外部设备，以便您可以恢复最后一条消息，而这些消息现在几乎肯定会丢失。如果没有其他办法，作为最后一搏，请尝试保存它们，不写回并立即刷新到 SD 卡等。
三年前，初夏时节，我身上也发生过类似的事情——用异丙醇轻轻清洁 RAM 触点，然后重新安装 SODIMM 芯片，就足以修复所有问题（而且清洁可能有点矫枉过正）。