Ubuntu is a Linux distribution based on Debian and developed by Canonical.
Official documentation can be found at https://help.ubuntu.com/.
Contents
Kubuntu
Disabling auto update
/etc/apt/apt.conf.d/20auto-upgrades
APT::Periodic::Update-Package-Lists "0"; APT::Periodic::Unattended-Upgrade "0";
Troubleshooting
Fixing broken packages
Sometime you will get an error like: E: Unable to correct problems, you have held broken packages.
To solve, you can try installing aptitude and trying aptitude install <package>
The aptitude utility has more powerful conflict resolution abilities.
See issue: https://askubuntu.com/a/451078
Listing installed packages
apt list --installed > installed.txt
Open and Ctrl+F in text editor