I'm having trouble adding some PPAs to my Mint 20 installation. I execute the following command:
sudo add-apt-repository ppa:anonbeat/guayadeque
and get this:
Executing: /tmp/apt-key-gpghome.FCM6QB5Ete/gpg.1.sh --keyserver hkps://keyserver.ubuntu.com:443 --recv-keys 71C004D5C1F0137ADBD5186195FABEFB4499973B You are about to add the following PPA: Guayadeque is a music management program designed for all music enthusiasts. It is Full Featured Linux media player that can easily manage large collections and uses the Gstreamer media framework. For mor information visit our web site http://www.guayadeque.org More info: https://launchpad.net/~anonbeat/+archive/ubuntu/guayadeque Press Enter to continue or Ctrl+C to cancel Executing: /tmp/apt-key-gpghome.gHfte0izY4/gpg.1.sh --keyserver hkps://keyserver.ubuntu.com:443 --recv-keys 71C004D5C1F0137ADBD5186195FABEFB4499973B gpg: key 95FABEFB4499973B: public key "Launchpad Guayadeque Music Player" imported gpg: Total number processed: 1 gpg: imported: 1 gpg: invalid key resource URL '/tmp/apt-key-gpghome.gHfte0izY4/home:antergos.asc.gpg' gpg: keyblock resource '(null)': General error gpg: key 76F1A20FF987672F: 1 signature not checked due to a missing key gpg: key 7B1869016E94B574: 1 signature not checked due to a missing key gpg: key A6616109451BBBF2: 12 signatures not checked due to missing keys gpg: key 3B4FE6ACC0B21F32: 3 signatures not checked due to missing keys gpg: key D94AA3F0EFE21092: 3 signatures not checked due to missing keys gpg: key C8CAB6595FDFF622: 2 signatures not checked due to missing keys gpg: key 871920D1991BC93C: 1 signature not checked due to a missing key gpg: Total number processed: 10 gpg: skipped new keys: 10
Literally no clue. It happened to me while trying to install lightdm-webkit2 too. If I got into the PPA section in Synaptic I can see it gets added, but if I try to see its contents I get an error. Trying to remove it (or anything else for that matter) prompts me to refresh the apt cache, and doing so opens a window that's "waiting for synaptic to exit" which is dumb because that's the program that executes that window. I can't close it manually, waiting does nothing, and I need to close that window without finishing its job and everything else, which does remove it for some reason, but it's not clean. What's going on?