yesterday I tested connecting USB keyboard to CE with IKBD injection. Works fine but pressing CTRL ALT DEL not only reboots the Atari, but also the Pi in the CE (Raspbian based CE).
This results in awful key klicking sounds during startup of the Atari and some features like shared drive not working, when TOS is up and running. Have to reset again to get things going.
I think, one could change that behaviour by configuring the Raspbian to not respond to that keypresses. Someone out there with any idea where to search for a config "switch"?