How do I disable Ktorrent from autostarting on login?

Solution 1:

When you close ktorrent, it's still running in the system tray. If you have "restore previous session" enabled in the System "Startup and Shutdown" settings, KTorrent will be re-started in windowed mode, even if it was minimized to the tray when shut down. To prevent KTorrent from starting, either

1. close it by right clicking on it's tray entry and press "Quit".
2. disabling "restore previous session" in System Settings

Solution 2:

Do two things:

1. First check to see if it's enabled with the command

   sudo systemctl list-unit-files | grep -i ktorrent
   

2. Then disable it with

   sudo systemctl disable ktorrent
   

Info:

list-unit-files [PATTERN...] List unit files installed on the system, in combination with their enablement state (as reported by is-enabled). If one or more PATTERNs are specified, only unit files whose name matches one of them are shown (patterns matching unit file system paths are not supported).