Date: Mon, 27 Jul 2026 19:03:24 +0900 From: Tomoaki AOKI <junchoon@dec.sakura.ne.jp> To: Sulev-Madis Silber <freebsd-current-freebsd-org111@ketas.si.pri.ee> Cc: freebsd-current@freebsd.org Subject: Re: Tragic State of FreeBSD Audio/Sound Message-ID: <20260727190324.4b14bd9d7581c02c1cb001db@dec.sakura.ne.jp> In-Reply-To: <0AC6B63B-2A37-4F8D-BDBD-36D09F584913@ketas.si.pri.ee> References: <hkttyyfmuguexmliuhmg@ewtn> <sirudbjwrqwlhpzjpfqf@abqv> <CAK7dMtCRpXO71v=AEsrtuQufVJHjN%2B%2BhsN6CT_MkXhMa1-JOzw@mail.gmail.com> <CALH631mZWS9e9FDXPUT8N8W8WnNnpfYaoPuRyqXhqNTW9=atLw@mail.gmail.com> <CAK7dMtC0f7SgU7k6Yvbqg94eksd5UJ1meX7o2_0ukAteZPb-9g@mail.gmail.com> <20260722085416.407316d393dce1884c29a3c7@dec.sakura.ne.jp> <CAK7dMtBDQTwFkQ2UKgz1LtniZBdaWBnfL4iwUo1kFT5d34xSdQ@mail.gmail.com> <20260724001549.c947af418add25dd00ac0344@dec.sakura.ne.jp> <CAK7dMtBO4C5H9uexDfLjzL-ovuXMU8s-t5D-rTDxJcfNq%2BAMmg@mail.gmail.com> <20260724193239.d2eb613e0c4f42b90925eb46@dec.sakura.ne.jp> <20260726090359.4082568fe922add2dc01deb2@dec.sakura.ne.jp> <CAJ-VmonRmyrhpmAFkf7dAg2VdVFQKjeYtWMBYPSBvohuGBg-9w@mail.gmail.com> <wizxwdgtrmwqlrhgojon@qeft> <0AC6B63B-2A37-4F8D-BDBD-36D09F584913@ketas.si.pri.ee>
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Another datapoint. When I've experienced "buzz" was when playing flac audio using audacious AND under quite heavy loads (maybe especially high I/O loads on staging / packaging) by poudriere builds and `make buildworld` in case base llvm is under rebuilding. Experienced both on pulseaudio and OSS backends, and today just experienced on pipewire backend, too. If this is caused by convergences on buses, I think glmark2 (or any other GPU-intensive benchmarks for the computer) could eat up bus bandwidth and causing the issue. Just my 2 JPY. ;-) On Sun, 26 Jul 2026 16:10:20 +0300 Sulev-Madis Silber <freebsd-current-freebsd-org111@ketas.si.pri.ee> wrote: > 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 -- Tomoaki AOKI <junchoon@dec.sakura.ne.jp>home | help
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