sudo add-apt-repository ppa:lubuntu-dev/backports
If you bump into the following error
Traceback (most recent call last):
File "/usr/bin/add-apt-repository", line 363, in <module>
addaptrepo = AddAptRepository()
File "/usr/bin/add-apt-repository", line 41, in __init__
self.distro.get_sources(self.sourceslist)
File "/usr/lib/python3/dist-packages/aptsources/distro.py", line 91, in get_sources
raise NoDistroTemplateException(
aptsources.distro.NoDistroTemplateException: Error: could not find a distribution template for Ubuntu/jammy
Run the following (reboot might be required) and run add-apt-repository
again.
sudo apt update && sudo apt full-upgrade
References: