I'm trying to get fingerprint scanner working but cannot even add repository. I'm new to ubuntu from fedora, maybe I'm doing something wrong, since others seems to be able do that half of year ago ...
so here is this answer: Using Fingerprint reader in 16.04
but first step:
sudo add-apt-repository ppa:fingerprint/fingerprint-gui LSB codename: 'bionic'. This codename isn't currently supported. Please check your LSB information with "lsb_release -a".
lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 18.04.1 LTS Release: 18.04 Codename: bionic
am I doing anything wrong?
EDIT: so I tried to avoid add-apt-repository command.
I added file /etc/apt/sources.list.d/fingerprint.list with content
deb [arch=amd64] http://ppa.launchpad.net/fingerprint/fingerprint-gui/ubuntu bionic contrib
and then did apt update with errors:
Get:6 http://ppa.launchpad.net/fingerprint/fingerprint-gui/ubuntu bionic InRelease [15,4 kB] Hit:10 http://security.ubuntu.com/ubuntu bionic-security InRelease Err:6 http://ppa.launchpad.net/fingerprint/fingerprint-gui/ubuntu bionic InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY EFD5FA852F20733F Reading package lists... Done W: GPG error: http://ppa.launchpad.net/fingerprint/fingerprint-gui/ubuntu bionic InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY EFD5FA852F20733F E: The repository 'http://ppa.launchpad.net/fingerprint/fingerprint-gui/ubuntu bionic InRelease' is not signed. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details.
EDIT2: so IIUC it seems, that there is missing some public key. How can I verify, that repository gpg is OK? I'd like to do that prior to blindly adding public key using:
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 3C962022012520A0 sudo apt-get update