我的机器需要很长时间才能重新启动。它总是这样。一旦启动，它运行良好。几个月前我研究过这个问题，然后放弃了。我以前这些ATOM BIOS 启动循环错误，大部分已经消失，但在启动时偶尔出现。
/var/log/boot.log显示：
lvmetad is not active yet, using direct activation during sysinit
Volume group "ubuntu-vg" not found
Cannot process volume group ubuntu-vg
/run/lvm/lvmetad.socket: connect failed: No such file or directory
WARNING: Failed to connect to lvmetad. Falling back to internal scanning.
Reading all physical volumes. This may take a while...
Found volume group "ubuntu-vg" using metadata type lvm2
/run/lvm/lvmetad.socket: connect failed: No such file or directory
WARNING: Failed to connect to lvmetad. Falling back to internal scanning.
2 logical volume(s) in volume group "ubuntu-vg" now active
启动后检查
$ sudo ls -l /run/lvm/lvmetad.socket
srw------- 1 root root 0 Apr 28 10:51 /run/lvm/lvmetad.socket
$ systemd-analyze blame
1min 30.228s sendmail.service
1min 30.228s postfix.service
1min 30.228s apache2.service
1min 20.195s plymouth-quit-wait.service
50.239s fail2ban.service
30.317s NetworkManager-wait-online.service
30.084s mysql.service
20.323s lvm2-monitor.service
20.239s dev-mapper-ubuntu\x2d\x2dvg\x2droot.device
1.426s docker.service
130ms ModemManager.service
122ms accounts-daemon.service
114ms gpu-manager.service
109ms grub-common.service
102ms NetworkManager.service
93ms thermald.service
85ms apport.service
85ms systemd-logind.service
83ms [email protected]
79ms irqbalance.service
75ms apparmor.service
72ms console-setup.service
72ms media-maestro.mount
69ms networking.service
69ms speech-dispatcher.service
69ms ondemand.service
67ms avahi-daemon.service
61ms lightdm.service
46ms systemd-modules-load.service
46ms keyboard-setup.service
44ms systemd-udev-trigger.service
42ms systemd-journald.service
42ms iio-sensor-proxy.service
41ms upower.service
41ms [email protected]
38ms colord.service
36ms udisks2.service
30ms ssh.service
30ms [email protected]
systemd-analyze plot > 输出.svg
有人对需要调查的事情有什么建议吗？