Some more test I did.
New install of the latest Debian version. Confirmed that the 3 kworker: Events_unbound processes are present. If the 3 processes are not at the top of the list, grabbing a window and dragging it around the screen rapidly will send those 3 processes to top.
Installed Nvidia drivers (550) from Debian repository, After reboot *the 3 kworker: Events_unbound processes are NOT there. *There are kworker processes in the list but not "events_unbound". No amount of dragging a window around on the screen brings these processes to the top. No CPU power spikes will using browsers. I still need to test screen sleep and locking as this is where I was have problems with the Nvidia driver.
Regards, Benjamin

