Re: Tragic State of FreeBSD Audio/Sound

power draw? filtering? variable power use? data interference

tho, we kind of ruled those out i think

but what if other oses control hw differently. maybe some freq scaling

wild guesses eh

i'm curious what the fix is, really...



On July 26, 2026 10:11:31 AM GMT+03:00, vermaden <vermaden@interia.pl> wrote:
>Hi,
>
>I will not quote the earlier messages as I found new way to generate this buzzing sound (for debugging).
>
>Works both for 14.4-RELEASE (I downgraded to that for less sound issues) and latest 15.1-RELEASE.
>
>Start playing some MP3 with 'audio/deadbeef' player - I tried both PulseAudio and OSS backends - same behavior - You need to compile Deadbeef from ports if You want to have PulseAudio backend.
>
>Next install 'benchmarks/glmark2' and run it without any other parameters with 'glmark2' command.
>
>First benchmark is 'rotating horse', second is 'rotating crate box' - buzzing will start at the end of 'horse' and will continue on the 'box' and rest of the benchmarks.
>
>Setting these change nothing:
># sysctl hw.snd.timeout=0
># sysctl hw.snd.latency=0
>
>Bug submitted here:
>https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=297059
>
>Regards,
>vermaden
>
>