每次我尝试在 Linux Mint 20.1 上使用更新管理器安装更新时，都会收到以下消息：
E: grub-pc: installed grub-pc package post-installation script subprocess returned error exit status 1
E: friendly-recovery: installed friendly-recovery package post-installation script subprocess returned error exit status 1
E: grub-efi-amd64-signed: dependency problems - leaving unconfigured
E: linux-image-5.4.0-67-generic: installed linux-image-5.4.0-67-generic package post-installation script subprocess returned error exit status 1
E: linux-image-5.4.0-70-generic: installed linux-image-5.4.0-70-generic package post-installation script subprocess returned error exit status 1
我是 Linux 新手，我能做什么？
任何帮助将不胜感激
PS：输出cat /etc/apt/sources.list.d/official-package-repositories.list：
deb http://packages.linuxmint.com ulyssa main upstream import backport #id:linuxmint_main
deb http://archive.ubuntu.com/ubuntu focal main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu focal-updates main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu focal-backports main restricted universe multiverse
deb http://security.ubuntu.com/ubuntu/ focal-security main restricted universe multiverse
deb http://archive.canonical.com/ubuntu/ focal partner
输出uname -a：
Linux amandanotebook 5.4.0-65-generic #73-Ubuntu SMP Mon Jan 18 17:25:17 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
“fdisk -l”的输出：
Disk /dev/sda: 931,53 GiB, 1000204886016 bytes, 1953525168 sectors
Disk model: WDC WD10SPZX-80Z
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: 408BDF6F-6F00-4AA7-84D8-E1983D1E8F08
Device Start End Sectors Size Type
/dev/sda1 2048 1050623 1048576 512M EFI System
/dev/sda2 1050624 1953523711 1952473088 931G Linux filesystem
“efibootmgr-v”的输出：
BootCurrent: 0002
Timeout: 1 seconds
BootOrder: 0002,0000,0001,0003,0004
Boot0000* Windows Boot Manager VenHw(99e275e7-75a0-4b37-a2e6-c5385e6c00cb)WINDOWS.........x...B.C.D.O.B.J.E.C.T.=.{.9.d.e.a.8.6.2.c.-.5.c.d.d.-.4.e.7.0.-.a.c.c.1.-.f.3.2.b.3.4.4.d.4.7.9.5.}....................
Boot0001* UEFI:CD/DVD Drive BBS(129,,0x0)
Boot0002* ubuntu HD(1,GPT,b0b1778e-9099-4055-95c0-8b7b3318b306,0x800,0x100000)/File(\EFI\UBUNTU\SHIMX64.EFI)
Boot0003* UEFI:Removable Device BBS(130,,0x0)
Boot0004* UEFI:Network Device BBS(131,,0x0)
编者注：所以我以 UEFI 模式启动，尽管grub-pc部分安装了软件包，但这可能是原因或相关。
'历史| 的输出grep grub-pc'：
53 sudo apt install grub-pc
63 /var/lib/dpkg/info/grub-pc.postinst
64 /var/lib/dpkg/info/grub-pc.postinst
65 sudo /var/lib/dpkg/info/grub-pc.postinst
66 /var/lib/dpkg/info/grub-pc.postinst
78 sudo apt reinstall grub-pc
105 sudo apt-get remove grub-pc-bin
110 sudo apt-get remove grub-pc-bin
112 history | grep grub-pc
'dpkg --list | 的输出grep“grub*”'
ii grub-common 2.04-1ubuntu26.9 amd64 GRand Unified Bootloader (common files)
iF grub-efi-amd64 2.04-1ubuntu26.9 amd64 GRand Unified Bootloader, version 2 (EFI-AMD64 version)
ii grub-efi-amd64-bin 2.04-1ubuntu26.9 amd64 GRand Unified Bootloader, version 2 (EFI-AMD64 modules)
iU grub-efi-amd64-signed 1.142.11+2.04-1ubuntu26.9 amd64 GRand Unified Bootloader, version 2 (EFI-AMD64 version, signed)
ii grub2-common 2.04-1ubuntu26.9 amd64 GRand Unified Bootloader (common files for version 2)
sudo apt get purge 的输出
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package 'grub-pc' is not installed, so not removed
Package 'grub-pc-bin' is not installed, so not removed
The following packages were automatically installed and are no longer required:
linux-headers-5.4.0-60 linux-headers-5.4.0-60-generic linux-headers-5.4.0-67
linux-headers-5.4.0-67-generic linux-image-5.4.0-60-generic
linux-image-unsigned-5.4.0-67-generic linux-modules-5.4.0-60-generic
linux-modules-5.4.0-67-generic linux-modules-extra-5.4.0-67-generic
Use 'sudo apt autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded.
4 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Setting up linux-image-unsigned-5.4.0-67-generic (5.4.0-67.75) ...
Setting up linux-image-5.4.0-70-generic (5.4.0-70.78) ...
Setting up grub-efi-amd64 (2.04-1ubuntu26.9) ...
(EE)
Fatal server error:
(EE) Server is already active for display 0
If this server is no longer running, remove /tmp/.X0-lock
and start again.
(EE)
(EE)
Please consult the The X.Org Foundation support
at http://wiki.x.org
for help.
(EE)
dpkg: error processing package grub-efi-amd64 (--configure):
installed grub-efi-amd64 package post-installation script subprocess returned error exit status 1
dpkg: dependency problems prevent configuration of grub-efi-amd64-signed:
grub-efi-amd64-signed depends on grub-efi-amd64 | grub-pc; however:
Package grub-efi-amd64 is not configured yet.
Package grub-pc is not installed.
dpkg: error processing package grub-efi-amd64-signed (--configure):
dependency problems - leaving unconfigured
Processing triggers for linux-image-unsigned-5.4.0-67-generic (5.4.0-67.75) ...
/etc/kernel/postinst.d/dkms:
* dkms: running auto installation service for kernel 5.4.0-67-generic
...done.
/etc/kernel/postinst.d/initramfs-tools:
update-initramfs: Generating /boot/initrd.img-5.4.0-67-generic
/etc/kernel/postinst.d/zz-update-grub:
Sourcing file `/etc/default/grub'
(EE)
Fatal server error:
(EE) Server is already active for display 0
If this server is no longer running, remove /tmp/.X0-lock
and start again.
(EE)
(EE)
Please consult the The X.Org Foundation support
at http://wiki.x.org
for help.
(EE)
run-parts: /etc/kernel/postinst.d/zz-update-grub exited with return code 1
dpkg: error processing package linux-image-unsigned-5.4.0-67-generic (--configure):
installed linux-image-unsigned-5.4.0-67-generic package post-installation script subprocess returned error exit status 1
Processing triggers for linux-image-5.4.0-70-generic (5.4.0-70.78) ...
/etc/kernel/postinst.d/dkms:
* dkms: running auto installation service for kernel 5.4.0-70-generic
...done.
/etc/kernel/postinst.d/initramfs-tools:
update-initramfs: Generating /boot/initrd.img-5.4.0-70-generic
/etc/kernel/postinst.d/zz-update-grub:
Sourcing file `/etc/default/grub'
(EE)
Fatal server error:
(EE) Server is already active for display 0
If this server is no longer running, remove /tmp/.X0-lock
and start again.
(EE)
(EE)
Please consult the The X.Org Foundation support
at http://wiki.x.org
for help.
(EE)
run-parts: /etc/kernel/postinst.d/zz-update-grub exited with return code 1
dpkg: error processing package linux-image-5.4.0-70-generic (--configure):
installed linux-image-5.4.0-70-generic package post-installation script subprocess returned error exit status 1
Errors were encountered while processing:
grub-efi-amd64
grub-efi-amd64-signed
linux-image-unsigned-5.4.0-67-generic
linux-image-5.4.0-70-generic
E: Sub-process /usr/bin/dpkg returned an error code (1)