这是命令sudo DEBCONF_DEBUG=developer apt upgrade -f
这就是输出：
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
The following packages will be upgraded:
kubectl libldap-2.4-2 libldap-common linux-libc-dev pgadmin4 pgadmin4-apache2 pgadmin4-common pgadmin4-doc snapd xserver-xorg-core-hwe-18.04
xserver-xorg-legacy-hwe-18.04
11 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 0 B/57,6 MB of archives.
After this operation, 995 kB of additional disk space will be used.
Do you want to continue? [Y/n] y
Preconfiguring packages ...
debconf (developer): starting /tmp/pgadmin4-apache2.config.cHqjgK configure 4.21-1.pgdg18.04+1
debconf (developer): <-- INPUT high pgadmin4/email
debconf (developer): --> 30 question skipped
debconf (developer): <-- INPUT high pgadmin4/password
debconf (developer): --> 30 question skipped
debconf (developer): <-- GO
debconf (developer): --> 0 ok
debconf (developer): <-- STOP
debconf (developer): starting /tmp/xserver-xorg-legacy-hwe-18.04.config.rG27Za configure 2:1.20.8-2ubuntu2.1~18.04.1
setting xserver-xorg-legacy/xwrapper/allowed_users from configuration file
debconf (developer): <-- SET xserver-xorg-legacy/xwrapper/allowed_users Console Users Only
debconf (developer): --> 0 value set
debconf (developer): <-- INPUT low xserver-xorg-legacy/xwrapper/allowed_users
debconf (developer): --> 30 question skipped
debconf (developer): <-- GO
debconf (developer): --> 0 ok
debconf (developer): <-- GET xserver-xorg-legacy/xwrapper/allowed_users
debconf (developer): --> 0 Console Users Only
debconf (developer): <-- SET xserver-xorg-legacy/xwrapper/actual_allowed_users console
debconf (developer): --> 0 value set
dpkg: unrecoverable fatal error, aborting:
unable to open files list file for package 'transmission-gtk': Permission denied
E: Sub-process /usr/bin/dpkg returned an error code (2)