Was this perhaps a temporary issue? I'm not able to recreate this right now.
bdmurray@clean-eoan-amd64:~$ sudo add-apt-repository ppa:ubuntu-raspi2/ppa [sudo] password for bdmurray: https://wiki.ubuntu.com/ARM/RaspberryPi Optional PPA for Raspberry Pi 2/3 installations. More info: https://launchpad.net/~ubuntu-raspi2/+archive/ubuntu/ppa Press [ENTER] to continue or Ctrl-c to cancel adding it. ^C ** Package changed: ubuntu => software-properties (Ubuntu) ** Changed in: software-properties (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to software-properties in Ubuntu. https://bugs.launchpad.net/bugs/1849714 Title: failure to install repos for raspberry pi Status in software-properties package in Ubuntu: Incomplete Bug description: following the directions about 1/5 down the page of https://wiki.ubuntu.com/ARM/RaspberryPi sudo add-apt-repository ppa:ubuntu-raspi2/ppa Cannot add PPA: 'ppa:~ubuntu-raspi2/ubuntu/ppa'. ERROR: '~ubuntu-raspi2' user or team does not exist. This seems like a failure to me. shire:~(13) lsb_release -rd Description: Ubuntu 19.10 Release: 19.10 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/software-properties/+bug/1849714/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp