我有一台 ThinkPad T470，配备 512GB SSD，与 Windows 双启动，几天以来启动速度一直很慢，这可能是什么问题？
❯ systemd-analyze time
Startup finished in 6.112s (firmware) + 7.896s (loader) + 2.188s (kernel) + 32.111s (userspace) = 48.309s
graphical.target reached after 32.060s in userspace
❯ systemd-analyze blame
28.501s plymouth-quit-wait.service
2.612s fwupd-refresh.service
1.833s dev-loop11.device
1.831s dev-loop12.device
1.827s dev-loop9.device
1.827s dev-loop13.device
1.710s dev-loop8.device
1.667s dev-loop15.device
1.654s dev-loop10.device
1.611s ua-timer.service
1.583s dev-loop14.device
1.547s dev-loop16.device
1.506s dev-nvme0n1p5.device
1.446s dev-loop7.device
1.260s fwupd.service
982ms systemd-rfkill.service
819ms apport.service
689ms accounts-daemon.service
653ms avahi-daemon.service
595ms snapd.service
539ms NetworkManager.service
475ms systemd-logind.service
472ms apport-autoreport.service
438ms networkd-dispatcher.service
372ms dev-loop2.device
368ms dev-loop1.device
365ms dev-loop3.device
363ms dev-loop0.device
361ms systemd-resolved.service
356ms udisks2.service
344ms e2scrub_reap.service
326ms snapd.apparmor.service
321ms dev-loop6.device
319ms gpu-manager.service
305ms grub-common.service
301ms systemd-udev-trigger.service
290ms systemd-journal-flush.service
280ms snap-bare-5.mount
268ms snap-core20-1695.mount
264ms snap-gnome\x2d3\x2d28\x2d1804-161.mount
262ms snap-gnome\x2d3\x2d38\x2d2004-115.mount
260ms apparmor.service
259ms dev-loop4.device
257ms snap-gnome\x2d3\x2d38\x2d2004-119.mount
249ms snap-gnome\x2d42\x2d2204-29.mount
248ms polkit.service
247ms snap-gtk\x2dcommon\x2dthemes-1535.mount
247ms systemd-timesyncd.service
243ms snap-postman-184.mount
241ms snap-snap\x2dstore-558.mount
241ms dev-loop5.device
240ms snap-snap\x2dstore-599.mount
238ms snap-snapd-16292.mount
237ms snap-snapd-17336.mount
lines 1-54
答案1
您可能已经以 snap 形式安装了几个应用程序，并且每个应用程序都安装了循环设备：
1.833s dev-loop11.device
1.831s dev-loop12.device
1.827s dev-loop9.device
1.827s dev-loop13.device
1.710s dev-loop8.device
1.667s dev-loop15.device
1.654s dev-loop10.device
您可以卸载不使用的快照。