Lenovo Legion 5i双系统下Ubuntu 22.04运行缓慢问题排查求助

大家好，我在自己的Lenovo Legion 5i（2020款）上装了Windows 11和Ubuntu 22.04双系统，目前Ubuntu这边运行得特别慢，我查过不少相关问题，但一直没找到能解决的方案，想在这里求助一下。

我的Ubuntu主要遇到这些问题：

• 虽然系统装在SSD上，但开机速度一般，而且输入密码登录后会卡顿 freeze 一会儿才能进入桌面
• 打开浏览器这类应用时延迟明显
• 切换到NVIDIA独显驱动后电池消耗特别快，所以现在只能用核显来保续航

我运行了systemd-analyze blame和systemd-analyze critical-chain命令，结果如下：

systemd-analyze blame 输出 #

jishnu@Legion:~$ systemd-analyze blame

29.606s systemd-fsck@dev-disk-by\x2duuid-eae532fe\x2da4b8\x2d44e0\x2db90d\x2d71d468e55dc1.service
16.329s plymouth-quit-wait.service
11.779s gpu-manager.service
6.605s NetworkManager-wait-online.service
3.718s docker.service
1.678s snapd.service
1.111s mysql.service
1.009s fwupd.service
768ms udisks2.service
721ms snapd.seeded.service
600ms dev-loop6.device
595ms dev-loop5.device
592ms dev-loop7.device
591ms dev-loop4.device
586ms dev-loop3.device
575ms dev-loop1.device
574ms dev-loop2.device
574ms dev-loop0.device
504ms dev-nvme0n1p6.device
353ms containerd.service
321ms accounts-daemon.service
320ms bluetooth.service
305ms user@1000.service
304ms apport-autoreport.service
293ms systemd-logind.service
280ms ModemManager.service
258ms e2scrub_reap.service
243ms systemd-udev-trigger.service
240ms networkd-dispatcher.service
218ms power-profiles-daemon.service
209ms home.mount
198ms dev-loop40.device
197ms dev-loop39.device
196ms dev-loop45.device
194ms dev-loop46.device
194ms dev-loop37.device
194ms dev-loop44.device
192ms dev-loop47.device
192ms dev-loop41.device
190ms dev-loop38.device
190ms dev-loop43.device
189ms dev-loop21.device
188ms update-notifier-download.service
188ms dev-loop42.device
188ms dev-loop22.device
186ms dev-loop23.device
184ms dev-loop14.device
184ms dev-loop28.device
183ms dev-loop36.device
182ms dev-loop25.device
180ms dev-loop31.device
179ms dev-loop29.device
179ms dev-loop32.device
179ms dev-loop27.device
178ms dev-loop30.device
177ms dev-loop16.device
176ms snapd.apparmor.service
176ms dev-loop33.device
175ms dev-loop24.device
174ms dev-loop20.device
171ms dev-loop26.device
171ms dev-loop19.device
170ms dev-loop17.device
167ms dev-loop18.device
166ms dev-loop15.device
165ms dev-loop35.device
165ms dev-loop8.device
164ms dev-loop34.device
164ms dev-loop13.device
162ms dev-loop11.device
162ms dev-loop10.device
160ms dev-loop12.device
158ms dev-loop9.device
156ms systemd-journald.service
147ms systemd-timedated.service
144ms systemd-modules-load.service
141ms upower.service
132ms switcheroo-control.service
129ms systemd-resolved.service
119ms apport.service
113ms systemd-timesyncd.service
112ms NetworkManager.service
108ms systemd-oomd.service
107ms systemd-udevd.service
102ms avahi-daemon.service
101ms snap-android\x2dstudio-124.mount
100ms snap-android\x2dstudio-125.mount
98ms snap-bare-5.mount
97ms snap-brave-218.mount
95ms snap-brave-220.mount
94ms snap-code-120.mount
93ms snap-code-122.mount
91ms snap-core-14784.mount
90ms snap-core-14946.mount
88ms snap-core18-2714.mount
86ms snap-core18-2721.mount
86ms apparmor.service
84ms snap-core20-1828.mount
83ms snap-core20-1852.mount
81ms snap-core22-547.mount
80ms snap-core22-583.mount
78ms snap-discord-150.mount
78ms grub-common.service
77ms snap-firefox-2391.mount
76ms snap-firefox-2487.mount
74ms systemd-journal-flush.service
74ms snap-foxglove\x2dstudio-40.mount
73ms snap-foxglove\x2dstudio-41.mount
71ms snap-gnome\x2d3\x2d28\x2d1804-161.mount
69ms snap-gnome\x2d3\x2d38\x2d2004-115.mount
68ms snap-gnome\x2d3\x2d38\x2d2004-119.mount
68ms modprobe@chromeos_pstore.service
68ms keyboard-setup.service
66ms snap-gnome\x2d42\x2d2204-56.mount
65ms snap-gnome\x2d42\x2d2204-65.mount
64ms snap-gtk\x2dcommon\x2dthemes-1535.mount
63ms preload.service
63ms snap-hunspell\x2ddictionaries\x2d1\x2d7\x2d2004-2.mount
62ms snap-mysql\x2dworkbench\x2dcommunity-10.mount
61ms gdm.service
60ms snap-notion\x2dsnap-16.mount
59ms secureboot-db.service
58ms snap-postman-184.mount
57ms snap-snap\x2dstore-599.mount
57ms cups.service
56ms snap-snap\x2dstore-638.mount
55ms systemd-tmpfiles-setup.service
55ms snap-snapd-18357.mount
54ms polkit.service
54ms snap-snapd-18596.mount
52ms snap-snapd\x2ddesktop\x2dintegration-49.mount
51ms snap-snapd\x2ddesktop\x2dintegration-57.mount
49ms snap-spotify-60.mount
48ms snap-sublime\x2dtext-116.mount
47ms binfmt-support.service
47ms snap-sublime\x2dtext-118.mount
45ms snap-telegram\x2ddesktop-4627.mount
44ms systemd-rfkill.service
44ms snap-telegram\x2ddesktop-4654.mount
42ms snap-todoist-841.mount
41ms snap-vlc-2344.mount
39ms snap-vlc-3078.mount
38ms snap-wine\x2dplatform\x2d7\x2ddevel\x2dcore20-23.mount
37ms rsyslog.service
36ms snap-wine\x2dplatform\x2d7\x2ddevel\x2dcore20-24.mount
35ms snap-wine\x2dplatform\x2druntime\x2dcore20-58.mount
34ms modprobe@drm.service
34ms snap-wine\x2dplatform\x2druntime\x2dcore20-59.mount
32ms var-snap-firefox-common-host\x2dhunspell.mount
31ms systemd-fsck@dev-disk-by\x2duuid-8837\x2dE5E6.service
30ms user-runtime-dir@1000.service
30ms proc-sys-fs-binfmt_misc.mount
28ms dev-hugepages.mount
27ms thermald.service
26ms dev-mqueue.mount
26ms packagekit.service
25ms colord.service
25ms sys-kernel-debug.mount
24ms systemd-fsck@dev-disk-by\x2duuid-0a2b2fa1\x2d8bae\x2d4c83\x2da428\x2d944be1e37aee.service
23ms sys-kernel-tracing.mount
22ms wpa_supplicant.service
22ms grub-initrd-fallback.service
21ms boot-efi.mount
20ms systemd-remount-fs.service
19ms kmod-static-nodes.service
19ms plymouth-start.service
19ms systemd-random-seed.service
18ms dev-disk-by\x2duuid-72fa2c0c\x2d6e01\x2d40c2\x2d9359\x2d6dcdb926380e.swap
18ms systemd-tmpfiles-setup-dev.service
17ms modprobe@configfs.service
17ms alsa-restore.service
14ms modprobe@fuse.service
14ms systemd-sysusers.service
14ms plymouth-read-write.service
12ms systemd-backlight@leds:platform::kbd_backlight.service
12ms kerneloops.service
10ms systemd-sysctl.service
10ms boot.mount
10ms console-setup.service
9ms systemd-update-utmp-runlevel.service
8ms systemd-update-utmp.service
5ms ufw.service
5ms sys-fs-fuse-connections.mount
5ms systemd-user-sessions.service
4ms rtkit-daemon.service
4ms setvtrgb.service
3ms systemd-backlight@backlight:intel_backlight.service
3ms sys-kernel-config.mount
3ms modprobe@efi_pstore.service
3ms docker.socket
3ms openvpn.service
3ms modprobe@pstore_blk.service
2ms modprobe@pstore_zone.service
2ms modprobe@ramoops.service
1ms snapd.socket
lines 134-195/195 (END)

systemd-analyze critical-chain 输出 #

jishnu@Legion:~$ systemd-analyze critical-chain

The time when unit became active or started is printed after the "@" character.
The time the unit took to start is printed after the "+" character.

graphical.target @48.225s
└─multi-user.target @48.224s
└─plymouth-quit-wait.service @31.894s +16.329s
└─systemd-user-sessions.service @31.887s +5ms
└─network.target @31.877s
└─NetworkManager.service @31.765s +112ms
└─dbus.service @31.757s
└─basic.target @31.735s
└─sockets.target @31.735s
└─snapd.socket @31.733s +1ms
└─sysinit.target @31.700s
└─snapd.apparmor.service @31.523s +176ms
└─apparmor.service @31.436s +86ms
└─local-fs.target @31.401s
└─run-snapd-ns-snapd\x2ddesktop\x2dintegration.mnt.mount @44.796s
└─run-snapd-ns.mount @44.173s
└─swap.target @1.569s
└─dev-disk-by\x2duuid-72fa2c0c\x2d6e01\x2d40c2\x2d9359\x2d6dcdb926380e.swap @1.546s +18ms
└─dev-disk-by\x2duuid-72fa2c0c\x2d6e01\x2d40c2\x2d9359\x2d6dcdb926380e.device @1.526s

我已经尝试过这些方法，但都没解决问题：

• 保持系统持续更新
• 定期用bleachbit清理文件
• 启用preload工具预加载常用程序
• 从启动应用列表中移除不必要的程序

最后附上我的笔记本规格：

• 型号：Lenovo Legion 5i (2020款)
• 处理器：Intel i5 10th gen
• 显卡：NVIDIA GTX 1650（独显）+ Intel iris（核显）
• 内存：16 GB DDR4 SODIM
• 存储：256 GB SSD + 1 TB HDD

备注：内容来源于stack exchange，提问作者Jishnu