从昨天晚上开始，Ubuntu 20.04 桌面现在以“奇怪”的模式启动，图标、文本和所有内容都比正常情况下更大（看起来处于救援模式）。
这是完整的输出boot-repair：
boot-repair-4ppa130
[20210605_1032]
============================== Boot Info Summary
===============================
=> No boot loader is installed in the MBR of
/dev/sda.
=> No boot loader is installed in the MBR of
/dev/sdb.
sda1:
File system: ext4
Boot sector type: -
Boot sector info:
Operating System: Ubuntu 20.04.2 LTS
Boot files: /boot/grub/grub.cfg
/etc/fstab /etc/default/grub
sdb1:
File system: vfat
Boot sector type: FAT32
Boot sector info: No errors found in the
Boot Parameter Block.
Operating System:
Boot files: /efi/BOOT/bkpbootx64.efi
/efi/BOOT/bootx64.efi
/efi/BOOT/fbx64.efi
/efi/BOOT/grubx64.efi
/efi/BOOT/mmx64.efi
/efi/ubuntu/grubx64.efi
/efi/ubuntu/mmx64.efi
/efi/ubuntu/shimx64.efi
/efi/ubuntu/grub.cfg
================================ 1 OS detected
=================================
OS#1: The OS now in use - Ubuntu 20.04.2 LTS
CurrentSession on sda1
============================ Architecture/Host Info ============================
CPU architecture: 64-bit
BOOT_IMAGE of the installed session in use:
/boot/vmlinuz-5.8.0-55-generic
root=UUID=f5046f8e-a21c-44f7-aa0c-86eb09cf922f ro
quiet splash vt.handoff=7
===================================== UEFI
=====================================
BIOS is EFI-compatible, and is setup in EFI-mode
for this installed-session.
SecureBoot enabled.
efibootmgr -v
BootCurrent: 0000
Timeout: 1 seconds
BootOrder: 0000,0002,0003,0005,0001,0004,0006
Boot0000* ubuntu HD(1,GPT,9db48a8e-4ca1-4a6d-
b266-fb916b2b2674,0x800,0x1d1c5000)/File(\EFI
\ubuntu\shimx64.efi)
Boot0001* UEFI:CD/DVD Drive BBS(129,,0x0)
Boot0002* Hard Drive
BBS(HD,,0x0)..GO..NO........O.S.a.m.s.u.n.g.
.S.S.D. .8.5.0. .E.V.O.
.2.5.0.G.B.................>..Gd-.;.A..MQ..L.2.S.6.R
.X.N.J.0.3.1.6.6.2.6. .B. . . .
........BO..NO........O.S.a.m.s.u.n.g. .S.S.D.
.7.5.0. .E.V.O.
.2.5.0.G.B.................>..Gd-.;.A..MQ..L.3.S.S.3
.B.N.H.0.0.5.1.9.8.5. .R. . . . ........BO
Boot0003* CD/DVD Drive
BBS(CDROM,,0x0)..GO..NO........O.T.S.S.T.c.o.r.p.
.C.D.D.V.D.W.
.S.H.-.2.2.4.D.B.................>..Gd-.;.A..MQ..L.9
.R.E.3.8.6.F.D.0.5.3.0.Q.Q. . . . . . ........BO
Boot0004* UEFI:Removable Device BBS(130,,0x0)
Boot0005* UEFI OS HD(1,GPT,9db48a8e-4ca1-4a6d-
b266-fb916b2b2674,0x800,0x1d1c5000)/File(\EFI
\BOOT\BOOTX64.EFI)..BO
Boot0006* UEFI:Network Device BBS(131,,0x0)
78415fb8fb9b909f8029858113f1335f sdb1/BOOT
/bkpbootx64.efi
78415fb8fb9b909f8029858113f1335f sdb1/BOOT
/bootx64.efi
2895d47544fd587b26c7e29be1295c27 sdb1/BOOT
/fbx64.efi
e169c84b62cae5d67d21f3412edf807f sdb1/BOOT
/grubx64.efi
dc3c47be2f78a78e5e57d097ae6c5c84 sdb1/BOOT
/mmx64.efi
e169c84b62cae5d67d21f3412edf807f sdb1/ubuntu
/grubx64.efi
dc3c47be2f78a78e5e57d097ae6c5c84 sdb1/ubuntu
/mmx64.efi
78415fb8fb9b909f8029858113f1335f sdb1/ubuntu
/shimx64.efi
============================= Drive/Partition
Info =============================
Disks info:
sda : is-GPT, no-BIOSboot, has-noESP, not-
usb, not-mmc, has-os, 2048 sectors * 512
bytes
sdb : is-GPT, no-BIOSboot, has---ESP, not-
usb, not-mmc, no-os, 2048 sectors * 512 bytes
Partitions info (1/3):
sda1 : is-os, 64, apt-get, signed grub-
pc grub-efi , grub2, grub-install, grubenv-
ok, update-grub, farbios
sdb1 : no-os, 32, nopakmgr, no-docgrub,
nogrub, nogrubinstall, no-grubenv,
noupdategrub, farbios
Partitions info (2/3):
sda1 : isnotESP, fstab-has-goodEFI, no-nt,
no-winload, no-recov-nor-hid, no-bmgr,
notwinboot
sdb1 : is---ESP, part-has-no-fstab, no-nt,
no-winload, no-recov-nor-hid, no-bmgr,
notwinboot
Partitions info (3/3):
sda1 : not-sepboot, with-boot, fstab-
without-boot, not-sep-usr, with--usr,
fstab-without-usr, std-grub.d, sda
sdb1 : not-sepboot, no-boot, part-has-no-
fstab, not-sep-usr, no---usr, part-has-no-
fstab, std-grub.d, sdb
fdisk -l (filtered):
Disk sda: 232.91 GiB, 250059350016 bytes,
488397168 sectors
Disk identifier: 775C9C9D-
396F-4B66-9D21-89F3980F2FC1
Start End Sectors Size Type
sda1 2048 488396799 488394752 232.9G Linux
filesystem
Disk sdb: 232.91 GiB, 250059350016 bytes,
488397168 sectors
Disk identifier: C13CF275-89A7-4C38-
BCE5-2378A910AFB0
Start End Sectors Size Type
sdb1 2048 488396799 488394752 232.9G EFI System
parted -lm (filtered):
sda:250GB:scsi:512:512:gpt:ATA Samsung SSD 850:;
1:1049kB:250GB:250GB:ext4::;
sdb:250GB:scsi:512:512:gpt:ATA Samsung SSD 750:;
1:1049kB:250GB:250GB:fat32::boot, esp;
blkid (filtered):
NAME FSTYPE UUID
PARTUUID LABEL
PARTLABEL
sda
└─sda1 ext4 f5046f8e-a21c-44f7-
aa0c-86eb09cf922f ed2bda81-190b-4b82-
b4c7-49243ee64d32
sdb
└─sdb1 vfat 2F90-9EC4
9db48a8e-4ca1-4a6d-b266-fb916b2b2674
df (filtered):
Avail Use% Mounted on
sda1 179.7G 16% /
sdb1 232.8G 0% /mnt/boot-sav/sdb1
Mount options:
sda1 rw,relatime,errors=remount-ro
sdb1
rw,relatime,fmask=0022,dmask=0022,codepage=437,iochar
set=iso8859-1,shortname=mixed,errors=remount-ro
====================== sda1/boot/grub/grub.cfg
(filtered) ======================
Ubuntu f5046f8e-a21c-44f7-aa0c-86eb09cf922f
Ubuntu, with Linux 5.8.0-55-generic f5046f8e-
a21c-44f7-aa0c-86eb09cf922f
Ubuntu, with Linux 5.8.0-53-generic f5046f8e-
a21c-44f7-aa0c-86eb09cf922f
### END /etc/grub.d/30_os-prober ###
UEFI Firmware Settings uefi-firmware
### END /etc/grub.d/30_uefi-firmware ###
========================== sda1/etc/fstab
(filtered) ===========================
# <file system> <mount point> <type> <options>
<dump> <pass>
# / was on /dev/sda1 during installation
UUID=f5046f8e-a21c-44f7-aa0c-86eb09cf922f /
ext4 errors=remount-ro 0 1
# /boot/efi was on /dev/sdb1 during installation
/swapfile none
swap sw 0 0
UUID=2F90-9EC4 /boot/efi vfat defaults
0 1
======================= sda1/etc/default/grub
(filtered) =======================
GRUB_DEFAULT=0
GRUB_TIMEOUT_STYLE=hidden
GRUB_TIMEOUT=10
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null
|| echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
GRUB_CMDLINE_LINUX=""
==================== sda1: Location of files
loaded by Grub ====================
GiB - GB File
Fragment(s)
72,135078430 = 77,454450688 boot/grub
/grub.cfg 1
103,017910004 = 110,614638592 boot/vmlinuz
1
76,635093689 = 82,286305280 boot/vmlinuz-
5.8.0-53-generic 1
103,017910004 = 110,614638592 boot/vmlinuz-
5.8.0-55-generic 1
76,635093689 = 82,286305280 boot/vmlinuz.old
1
107,753547668 = 115,699490816 boot/initrd.img
2
77,960407257 = 83,709349888 boot/initrd.img-
5.8.0-53-generic 2
107,753547668 = 115,699490816 boot/initrd.img-
5.8.0-55-generic 2
77,960407257 = 83,709349888
boot/initrd.img.old 2
===================== sda1: ls -l /etc/grub.d/
(filtered) ======================
-rwxr-xr-x 1 root root 17622 gen 13 15:12
10_linux
-rwxr-xr-x 1 root root 42359 gen 13 15:12
10_linux_zfs
-rwxr-xr-x 1 root root 12894 gen 13 15:12
20_linux_xen
-rwxr-xr-x 1 root root 12059 gen 13 15:12 30_os-
prober
-rwxr-xr-x 1 root root 1424 gen 13 15:12
30_uefi-firmware
-rwxr-xr-x 1 root root 214 gen 13 15:12
40_custom
-rwxr-xr-x 1 root root 216 gen 13 15:12
41_custom
===================== sdb1/efi/ubuntu/grub.cfg
(filtered) ======================
search.fs_uuid f5046f8e-a21c-44f7-
aa0c-86eb09cf922f root hd0,gpt1
set prefix=($root)'/boot/grub'
configfile $prefix/grub.cfg
Suggested repair:
The default repair of the Boot-Repair utility
would reinstall the grub-efi-amd64-signed of
sda1,
using the following options:
sdb1/boot/efi,
Additional repair would be performed: unhide-
bootmenu-10s use-standard-efi-file restore-efi-
backups
Final advice in case of suggested repair:
Please do not forget to make your UEFI firmware
boot on the The OS now in use - Ubuntu 20.04.2
LTS CurrentSession entry (sdb1/efi
/****/shim****.efi (**** will be updated in the
final message) file) !
paste.ubuntu.com ko ()
paste.debian.net ko ()
发生了什么事？如何恢复到“正常”模式？