Hello,Since updating bullseye to bookworm, the same sound card is not being used at boot time.
There are two sound cards in this machine and before the update, one card was always used when the system started so speech was reliable.
Since the update to Bookworm, the card selection is random. I can get sound back by plugging the speakers in to the other card.
System is debian bookworm, pulseaudio is not installed using mate desktop. Keith