这是全新安装的 Ubuntu 20.04，带有单独的主分区。昨天（2020 年 1 月 8 日，星期五）更新内核后，登录屏幕后我必须等待 10 多分钟才能加载桌面。
Machine : Acer Aspire 5 (A5 515-55g).
Processor: Intel(R) Core(TM) i5-1035G1 CPU @ 1.00GHz
Memory : 7923MB (5740MB used)
Resolution : 1920x1080 pixels
OpenGL Renderer : GeForce MX350/PCIe/SSE2 (Nvidia driver 455 open-source)
Gnome-shell version: 3.36.8
我尝试过的解决方案：
- 完全删除了 nvidia 驱动程序并使用了开源驱动程序（同样的问题，目前使用 450 驱动程序）
- 从 LiveUSB 启动并
sudo fsck -f /dev/sdXX在根分区上运行，修复所有错误（轻微） - 完全重新安装 gnome 桌面
sudo apt install --reinstall ubuntu-gnome-desktop - 禁用所有启动应用程序
- 已更新至 5.9 内核（当前）
- 尝试了所有可用的早期内核
- 启动至 LiveUSB 并运行 Boot-Replair
- 已验证所有 UUID # 均正确。
极其奇怪
当我尝试启动recovery mode并运行 fsck 时，出现以下消息：
/libg/recovery-mode/recovery-menu: line 80: /etc/default/rcS: No such file or directory
fsck from util-linux 2.34
/dev/nvme0n1p5 is mounted.
e2fsck: Cannot continure, aborting.
Finished, please press ENTER
这systemd-analyze critical-chain输出
$ systemd-analyze blame，输出：
6.328s plymouth-quit-wait.service
4.455s NetworkManager-wait-online.service
2.616s dev-nvme0n1p5.device
2.293s mysql.service
1.667s snapd.service
1.548s snap-canonical\x2dlivepatch-95.mount
1.522s snap-snap\x2dstore-467.mount
1.505s snap-kde\x2dframeworks\x2d5\x2dcore18-32.mount
1.423s snap-pdftk-9.mount
1.417s snap-wordpress\x2ddesktop-109.mount
1.332s snap-pdfmixtool-793.mount
1.257s snap-snap\x2dstore-518.mount
1.211s snap-kde\x2dframeworks\x2d5\x2dqt\x2d5\x2d14\x2dcore18-4.mount
1.155s snap-gnome\x2d3\x2d28\x2d1804-145.mount
1.139s snap-snapd-10707.mount
1.001s snap-core-10577.mount
952ms snap-snapd-10492.mount
895ms snap-gtk2\x2dcommon\x2dthemes-13.mount
850ms snap-kdenlive-24.mount
849ms snap-pdfmixtool-785.mount
842ms snap-telegram\x2ddesktop-2315.mount
834ms snap-gnome\x2d3\x2d34\x2d1804-60.mount
726ms tlp.service
721ms dev-loop3.device
674ms snap-gtk\x2dcommon\x2dthemes-1506.mount
634ms systemd-logind.service
597ms systemd-fsck@dev-disk-by\x2duuid-b659bc0b\x2d8105\x2d4e5f\x2d8402\x2d89208c74620c.service
564ms snap-gnome\x2d3\x2d34\x2d1804-66.mount
520ms snap-ffmpeg-1286.mount
480ms snap-atom-265.mount
457ms vboxdrv.service
451ms phpsessionclean.service
411ms snap-core18-1880.mount
409ms snap-core20-904.mount
402ms dev-loop17.device
401ms snap-gtk\x2dcommon\x2dthemes-1514.mount
387ms dev-loop1.device
386ms dev-loop2.device
335ms dev-loop8.device
333ms dev-loop0.device
321ms snap-core18-1944.mount
306ms dev-loop4.device
273ms fwupd.service
256ms udisks2.service
245ms snap-core-10583.mount
234ms accounts-daemon.service
230ms dev-loop5.device
225ms snap-chromium-1444.mount
225ms dev-loop6.device
224ms snap-chromium-1424.mount
220ms dev-loop9.device
217ms networkd-dispatcher.service
214ms dev-loop20.device
210ms dev-loop19.device
199ms apport-autoreport.service
187ms snap-bitcoin\x2dcore-81.mount
183ms systemd-resolved.service
179ms [email protected]
164ms apache2.service
160ms dev-loop24.device
153ms ufw.service
149ms dev-loop22.device
137ms dev-loop25.device
134ms dev-loop14.device
130ms ModemManager.service
121ms avahi-daemon.service
117ms dev-loop7.device
114ms bluetooth.service
113ms dev-loop18.device
112ms dev-loop21.device
110ms swapfile.swap
110ms dev-loop10.device
107ms NetworkManager.service
105ms apparmor.service
103ms polkit.service
101ms upower.service
101ms blueman-mechanism.service
97ms dev-loop26.device
97ms systemd-journald.service
96ms systemd-journal-flush.service
96ms dev-loop23.device
94ms dev-loop15.device
94ms dev-loop13.device
92ms systemd-udev-trigger.service
90ms [email protected]
87ms switcheroo-control.service
86ms wpa_supplicant.service
84ms home.mount
83ms thermald.service
77ms systemd-timesyncd.service
76ms smbd.service
75ms nmbd.service
75ms systemd-udevd.service
70ms apport.service
63ms grub-common.service
62ms e2scrub_reap.service
62ms keyboard-setup.service
53ms gpu-manager.service
47ms dev-loop11.device
44ms secureboot-db.service
43ms geoclue.service
41ms lm-sensors.service
40ms rsyslog.service
40ms ssh.service
38ms winbind.service
37ms dev-loop16.device
35ms dictd.service
35ms systemd-fsck@dev-disk-by\x2duuid-1C0E\x2d0739.service
33ms grub-initrd-fallback.service
32ms systemd-tmpfiles-clean.service
30ms systemd-modules-load.service
30ms snapd.seeded.service
30ms snapd.apparmor.service
28ms kerneloops.service
26ms hddtemp.service
26ms bolt.service
25ms dev-loop27.device
24ms alsa-restore.service
23ms dev-loop12.device
22ms resolvconf-pull-resolved.service
22ms gdm.service
21ms [email protected]
20ms binfmt-support.service
19ms nvidia-persistenced.service
18ms systemd-tmpfiles-setup.service
17ms [email protected]
17ms pppd-dns.service
用户@机器:~$ sudo lsblk -f
NAME FSTYPE LABEL UUID FSAVAIL FSUSE% MOUNTPOINT
loop0 squashfs 0 100% /snap/atom/265
loop1 squashfs 0 100% /snap/bitcoin-core/81
loop2 squashfs 0 100% /snap/chromium/1424
loop3 squashfs 0 100% /snap/chromium/1444
loop4 squashfs 0 100% /snap/core/10583
loop5 squashfs 0 100% /snap/core18/1880
loop6 squashfs 0 100% /snap/core18/1944
loop7 squashfs 0 100% /snap/gtk-common-themes/1514
loop8 squashfs 0 100% /snap/core20/904
loop9 squashfs 0 100% /snap/ffmpeg/1286
loop10 squashfs 0 100% /snap/gnome-3-34-1804/66
loop11 squashfs 0 100% /snap/gtk-common-themes/1506
loop12 squashfs 0 100% /snap/kdenlive/24
loop13 squashfs 0 100% /snap/gnome-3-34-1804/60
loop14 squashfs 0 100% /snap/pdfmixtool/785
loop15 squashfs 0 100% /snap/telegram-desktop/2315
loop16 squashfs 0 100% /snap/gtk2-common-themes/13
loop17 squashfs 0 100% /snap/core/10577
loop18 squashfs 0 100% /snap/snapd/10492
loop19 squashfs 0 100% /snap/gnome-3-28-1804/145
loop20 squashfs 0 100% /snap/snapd/10707
loop21 squashfs 0 100% /snap/kde-frameworks-5-qt-5-14-core18/4
loop22 squashfs 0 100% /snap/snap-store/518
loop23 squashfs 0 100% /snap/pdfmixtool/793
loop24 squashfs 0 100% /snap/pdftk/9
loop25 squashfs 0 100% /snap/wordpress-desktop/109
loop26 squashfs 0 100% /snap/kde-frameworks-5-core18/32
loop27 squashfs 0 100% /snap/snap-store/467
loop28 squashfs 0 100% /snap/canonical-livepatch/95
sda
├─sda1 ntfs Data 6AC011DCC011AEF7
└─sda2 ext4 home b659bc0b-8105-4e5f-8402-89208c74620c 96G 83% /home
nvme0n1
├─nvme0n1p1 vfat ESP 1C0E-0739 36.3M 62% /boot/efi
├─nvme0n1p2
├─nvme0n1p3 ntfs Acer FA780E9E780E5A31
├─nvme0n1p4 ntfs Recovery 12380F1D380EFF89
├─nvme0n1p5 ext4 17940c0e-24cc-4477-964c-251be29ba859 44G 47% /
└─nvme0n1p6 swap 5fc4b948-a7d5-454c-a0d8-7160f260d09f
愿意使用计算机，而不是修复电脑，有什么建议吗？谢谢
答案1
该帖子的主要症状/问题已通过临时修复“解决”，因为该症状实际上是我在此处发布的另一个问题的一部分。