我是 Ubuntu 新手，今天才安装它，Ubuntu 启动时间太长了，大约 2 分钟，我发现了一个名为 systemd-analyze blame 的命令，所以我得到了这样的输出
15.267s dev-mapper-ubuntu\x2d\x2dvg\x2droot.device
13.088s plymouth-quit-wait.service
11.207s NetworkManager-wait-online.service
10.302s systemd-journal-flush.service
8.938s lvm2-monitor.service
7.964s plymouth-start.service
7.528s systemd-tmpfiles-setup-dev.service
5.744s udisks2.service
5.737s networking.service
5.388s dev-loop2.device
5.369s dev-loop0.device
5.330s dev-loop1.device
5.275s dev-loop3.device
5.241s dev-loop5.device
5.217s dev-loop7.device
5.196s dev-loop6.device
5.159s dev-loop4.device
4.708s ModemManager.service
4.421s NetworkManager.service
4.011s accounts-daemon.service
3.527s apport.service
3.331s wpa_supplicant.service
2.957s thermald.service
2.807s grub-common.service
2.426s avahi-daemon.service
2.418s gpu-manager.service
2.103s systemd-logind.service
1.903s rsyslog.service
1.875s iio-sensor-proxy.service
1.809s polkit.service
1.690s keyboard-setup.service
1.662s systemd-rfkill.service
1.661s networkd-dispatcher.service
1.639s systemd-sysctl.service
1.556s pppd-dns.service
1.541s packagekit.service
1.466s apparmor.service
1.399s systemd-modules-load.service
1.111s fwupd.service
1.053s systemd-backlight@backlight:intel_backlight.service
1.029s kmod-static-nodes.service
805ms dev-mqueue.mount
797ms systemd-remount-fs.service
778ms bluetooth.service
752ms sys-kernel-debug.mount
748ms dev-hugepages.mount
652ms ufw.service
648ms lvm2-pvscan@8:2.service
556ms dns-clean.service
526ms systemd-journald.service
508ms [email protected]
474ms systemd-timesyncd.service
465ms systemd-resolved.service
447ms systemd-random-seed.service
444ms systemd-fsck@dev-disk-by\x2duuid-6365\x2d58F6.service
391ms blk-availability.service
363ms kerneloops.service
356ms snap-gnome\x2d3\x2d26\x2d1604-59.mount
352ms systemd-tmpfiles-setup.service
319ms snap-gnome\x2dlogs-25.mount
315ms speech-dispatcher.service
299ms snap-core-4486.mount
294ms gdm.service
281ms snap-gnome\x2dsystem\x2dmonitor-36.mount
250ms upower.service
248ms snap-gnome\x2dcharacters-69.mount
224ms snap-gnome\x2dcalculator-154.mount
220ms dev-mapper-ubuntu\x2d\x2dvg\x2dswap_1.swap
210ms systemd-udevd.service
199ms snap-canonical\x2dlivepatch-39.mount
190ms plymouth-read-write.service
179ms snap-intellij\x2didea\x2dultimate-44.mount
173ms snapd.seeded.service
171ms console-setup.service
157ms systemd-update-utmp.service
155ms systemd-tmpfiles-clean.service
145ms systemd-user-sessions.service
141ms boot-efi.mount
116ms bolt.service
116ms setvtrgb.service
115ms colord.service
59ms snapd.service
53ms [email protected]
50ms systemd-udev-trigger.service
43ms dev-loop11.device
43ms alsa-restore.service
40ms snap-gnome\x2dsystem\x2dmonitor-39.mount
39ms dev-loop9.device
34ms snap-gnome\x2dcharacters-86.mount
32ms dev-loop10.device
32ms snap-gnome\x2dcalculator-167.mount
32ms snap-gnome\x2dlogs-31.mount
30ms dev-loop8.device
29ms dev-loop12.device
26ms snapd.socket
26ms rtkit-daemon.service
24ms snap-core-4571.mount
8ms systemd-update-utmp-runlevel.service
6ms ureadahead-stop.service
2ms sys-fs-fuse-connections.mount
1ms sys-kernel-config.mount
现在我不知道接下来该做什么。另外，我在安装过程中没有选择加密选项，但我选择了分区的 LVM 选项。所以任何指南都会有用。