On Sat, 2021-10-09 at 06:40 +0800, Ed Greshko wrote:
What results do you get if you boot your system with the USB speakers disconnected and the connect them once the system is fully booted?
I was listening to some audio when the sound stopped;  AudioEngine had disappeared from the list of output devices.  A log extract is attached  (Audio-Crash.txt).  

There may be a problem with the cable.  The speakers are attached to the computer with a USB extender cable, which may not give as good a connection as is needed.  So I moved things around and connected the speakers without the extender; we'll see if things get better.  A log extract is attached (Audio-Restore-ShortCable.txt).

-- 
Sincerely Jonathan Ryshpan <jonrysh@pacbell.net>

	We've heard that a million monkeys at a million keyboards
	could produce the Complete Works of Shakespeare; 
	now, thanks to the Internet, we know this is not true.
	--Robert Wilensky, University of California