Ubuntu 19.04 Disco Dingo install fails

The PPA repository for line suite on 19.04 is missing a release file and fails. Details below:

Following the Lime Suite for Linux instructions using PPA on:

I tried to install the repository with the command:
sudo add-apt-repository -y ppa:myriadrf/drivers

and here is the result with the error at the end:

Hit:1 http://us.archive.ubuntu.com/ubuntu disco InRelease                   
Get:2 http://us.archive.ubuntu.com/ubuntu disco-updates InRelease [97.5 kB] 
Get:3 http://security.ubuntu.com/ubuntu disco-security InRelease [97.5 kB]     
Get:4 http://us.archive.ubuntu.com/ubuntu disco-backports InRelease [88.8 kB]  
Get:5 http://us.archive.ubuntu.com/ubuntu disco-updates/main amd64 Packages [197 kB]
Get:6 http://us.archive.ubuntu.com/ubuntu disco-updates/main i386 Packages [170 kB]
Get:7 http://us.archive.ubuntu.com/ubuntu disco-updates/universe i386 Packages [231 kB]
Get:8 http://us.archive.ubuntu.com/ubuntu disco-updates/universe amd64 Packages [233 kB]
Ign:9 http://ppa.launchpad.net/myriadrf/drivers/ubuntu disco InRelease         
Err:10 http://ppa.launchpad.net/myriadrf/drivers/ubuntu disco Release
  404  Not Found [IP: 80]
Reading package lists... Done
E: The repository 'http://ppa.launchpad.net/myriadrf/drivers/ubuntu disco Release' does not have a Release file.
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.

Why use a non-LTS release, Disco Dingo is a short term support release and will only be supported, for a total of six months, until January 2020, and then no more updates. I’d pick Ubuntu 18.04.2 LTS Bionic Beaver, if I was installing Ubuntu on a machine right now.

You can get around this problem by modifying the repo to pull from the “bionic” rather than the “disco” distribution as follows:

  • From the program launcher run Software & Updates (the one with the blue circle icon).
  • In the Other Software tab, edit the two ppa entries for myriadrf and change the Distribution value to bionic.

You should now be able to install the latest version from the bionic repo.