On Apr 11, 2023, at 13:19, James Addison <jay@jp-hosting.net> wrote: > That could be a useful clue. Which of those three systems, if any, > are multi-processor? I suspected such a thing and so today I have been running the qemu arm64 system with a single core. Quite unfortunately it still stops speaking. All of these systems are multiprocessor except for todays exercise with one core. --FC