这是 systemd-analyze
systemd-analyze blame
34.125s systemd-resolved.service
33.952s systemd-timesyncd.service
20.966s plymouth-quit-wait.service
2.583s NetworkManager-wait-online.service
1.028s dev-sdb2.device
764ms snapd.service
373ms snap-vscode-77.mount
356ms snap-gnome\x2dcalculator-260.mount
347ms fwupd.service
336ms systemd-logind.service
327ms snap-gnome\x2dcharacters-139.mount
313ms snap-opera-26.mount
290ms snap-gnome\x2dcalculator-238.mount
288ms udisks2.service
277ms snap-gnome\x2d3\x2d28\x2d1804-15.mount
277ms dev-loop8.device
274ms snap-discord-91.mount
274ms dev-loop2.device
265ms dev-loop1.device
263ms dev-loop10.device
254ms networkd-dispatcher.service
250ms dev-loop9.device
245ms ModemManager.service
systemd-analyze 关键链
graphical.target @56.369s
└─multi-user.target @56.369s
└─kerneloops.service @37.961s +10ms
└─network-online.target @37.960s
└─NetworkManager-wait-online.service @35.376s +2.583s
└─NetworkManager.service @35.229s +145ms
└─dbus.service @35.225s
└─basic.target @35.200s
└─sockets.target @35.200s
└─snapd.socket @35.197s +2ms
└─sysinit.target @35.196s
└─systemd-timesyncd.service @1.242s +33.952s
└─systemd-tmpfiles-setup.service @1.223s +16ms
└─local-fs.target @1.219s
└─run-user-1000-gvfs.mount @37.720s
└─run-user-1000.mount @35.701s
└─local-fs-pre.target @232ms
└─keyboard-setup.service
@153ms+78ms
└─systemdjournald.socket@144ms
└─system.slice @143ms
请帮我解决 ubuntu 启动需要 1-2 分钟的问题。前几次启动需要 5-15 秒。（完全菜鸟，使用 ubuntu 3 小时）
编辑：也许我的内置 1 TB 硬盘会导致问题？
我在启动时将其安装到 /mnt。