When I run the command
sudo add-apt-repository ppa:linrunner/tlp
It hangs after it asks for my password for a long time then shows this
Cannot add PPA: 'ppa:linrunner/tlp'. Please check that the PPA name or format is correct.
I know the format is correct, I don't know what is wrong. I am not behind a proxy or any other internet blocking firewalls.