Errors with apt-get update

Question

It looks like other people have had similar issues and I tried to do what people were advising, but it didn't work.

Edit: sudo ppa-purge ppa:mc3man/trusty-media returns sudo: ppa-purge: command not found

Answer 1

Options:

• Safest - remove all the PPAs that are erroring
  • Use either ppa-purge or Software & Updates
• Risky - launch Software & Updates > Other Software > clicking on the erroring PPAs > Edit... > change Distribution to one that the PPA has packages for. You could search for the PPA in Google to find the Launchpad page to check which Ubuntu version the PPA has packages for
  • Note that this is much more risky because the PPA creator didn't at all test installing to 18.04, you could potentially break your system (which you run the risk of doing anyway with PPAs - they're not packages tested with normal Ubuntu quality processes to work on Ubuntu and with Ubuntu updates)