我尝试使用sudo apt upgrade
这个输出：
lnee@fallback:~$ sudo apt upgrade
[sudo] password for lnee:
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
The following packages have been kept back:
libodbc1
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.
Do you want to continue? [Y/n] y
debconf: DbDriver "config": /var/cache/debconf/config.dat is locked by another process: Resource temporarily unavailable
Setting up ca-certificates (20201027ubuntu0.20.04.1) ...
debconf: DbDriver "config": /var/cache/debconf/config.dat is locked by another process: Resource temporarily unavailable
dpkg: error processing package ca-certificates (--configure):
installed ca-certificates package post-installation script subprocess returned error exit status 1
Setting up grub-efi-amd64 (2.04-1ubuntu26.6) ...
debconf: DbDriver "config": /var/cache/debconf/config.dat is locked by another process: Resource temporarily unavailable
dpkg: error processing package grub-efi-amd64 (--configure):
installed grub-efi-amd64 package post-installation script subprocess returned error exit status 1
Setting up anbox-modules-dkms (13) ...
debconf: DbDriver "config": /var/cache/debconf/config.dat is locked by another process: Resource temporarily unavailable
dpkg: error processing package anbox-modules-dkms (--configure):
installed anbox-modules-dkms 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
No apport report written because MaxReports is reached already
dpkg: dependency problems prevent processing triggers for shim-signed:
shim-signed depends on grub-efi-amd64-signed | grub-efi-arm64-signed; however:
Package grub-efi-amd64-signed is not configured yet.
Package grub-efi-arm64-signed is not installed.
dpkg: error processing package shim-signed (--configure):
dependency problems - leaving triggers unprocessed
No apport report written because MaxReports is reached already
Errors were encountered while processing:
ca-certificates
grub-efi-amd64
anbox-modules-dkms
grub-efi-amd64-signed
shim-signed
E: Sub-process /usr/bin/dpkg returned an error code (1)
lnee@fallback:~$
答案1
（注意后来发现这个不起作用错误仍然存在）所以我首先运行命令
sudo fuser -v /var/cache/debconf/config.dat
我得到了这个
/var/cache/debconf/config.dat: USER PID ACCESS COMMAND root 40970 F.... frontend
因此我获得了进程 id ( 40970) 并将其终止
sudo kill 40970（插入进程 id）。
然后我就这么做了sudo apt upgrade
然后我得到了这个
Configuring grub-efi-amd64 GRUB failed to install to the following devices: /dev/sda2 Do you want to continue anyway? If you do, your computer may not start up properly. Writing GRUB to boot device failed - continue? <Yes> <No>
于是我按下了<No>，然后<Ok>我认为它已经修好了。