Hi Alain, > I upgraded from Stretch to Buster and sound completely disappeared. > Removing Timidity fixed the problem but made me unable to use gnu > solfege as it > depends on timidity.
The sound is broken by timidity-daemon, not the timidity package itself. So you should try to install GNU Solfege and check that timidity-daemon is not installed (timidity "suggests" timidity-daemon so it should not be installed automatically). Best, François
