Cannot add apt-key on Ubuntu in APT keyring : gpg: [don't know]: invalid packet (ctb=01) : gpg: keydb_get_keyblock failed: eof
6809
How do I fix the GPG error "NO_PUBKEY"?
95593
sudo apt-get update returns an error
85711
verifiying ubuntu iso with repository gpg-keys
155918
What information do I need to solve an APT dependency issue?
5316
Update from 14.04 to 16.04 failed with GPG error
126538
Ubuntu 12.04 GPG error: http://archive.ubuntu.com precise Release: The following signatures were invalid: NODATA 1 NODATA 2
728
Unable to lock the administration directory (/var/lib/dpkg/) is another process using it?
154648
Getting error from apt-get when trying to install php5 package
78788
How to renew an expired keypair with gpg
23826
How do I fix a "Unknown configuration key `foreign-architecture' found in your `dpkg' configuration files." error?
94228
What commands (exactly) should replace the deprecated apt-key?
29877
How to fix "Could not open a connection to your authentication agent." error when trying to add ssh-key?
147336
How to fix dpkg error [2]?
28372
What is the correct way to use git with gnome-keyring and http(s) repos?
126437
pass and gpg: No public key
11267
How to set a Compose Key in Ubuntu 18.04
145373
Installing dpkg error "requested operation requires superuser privilege"