From nobody Mon Jul 27 10:03:24 2026 X-Original-To: freebsd-current@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4h7vLV00YCz6mk8n for ; Mon, 27 Jul 2026 10:03:30 +0000 (UTC) (envelope-from junchoon@dec.sakura.ne.jp) Received: from www121.sakura.ne.jp (www121.sakura.ne.jp [153.125.133.21]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4h7vLT3Dtjz3HfH for ; Mon, 27 Jul 2026 10:03:29 +0000 (UTC) (envelope-from junchoon@dec.sakura.ne.jp) Authentication-Results: mx1.freebsd.org; none Received: from delta.joker.local (124-18-6-240.area1c.commufa.jp [124.18.6.240]) (authenticated bits=0) by www121.sakura.ne.jp (8.18.1/8.17.1/[SAKURA-WEB]/20201212) with ESMTPA id 66RA3PD6038560; Mon, 27 Jul 2026 19:03:26 +0900 (JST) (envelope-from junchoon@dec.sakura.ne.jp) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=dec.sakura.ne.jp; s=s2405; t=1785146606; bh=K1wFyimSE92jXlJYNEgROT0OAfsMbR6EGKF+P71GRbk=; h=Date:From:To:Cc:Subject:In-Reply-To:References; b=us0m+K2CDlSVcAyEqQ/BViAigxyq4WreokJY/55ZMlWXpARobLmH/vHR/vyp12+qj gWiHPPalYmczIzJBStbFp5q88dv8m1dx87zriVIiqR7mDm5UQYGm0xA1Ep9I5GW5gT W6zJfX7z0a7wGJisCh31tcTRVIdBJBtm59y8kLzQ= Date: Mon, 27 Jul 2026 19:03:24 +0900 From: Tomoaki AOKI To: Sulev-Madis Silber 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: <20260722085416.407316d393dce1884c29a3c7@dec.sakura.ne.jp> <20260724001549.c947af418add25dd00ac0344@dec.sakura.ne.jp> <20260724193239.d2eb613e0c4f42b90925eb46@dec.sakura.ne.jp> <20260726090359.4082568fe922add2dc01deb2@dec.sakura.ne.jp> <0AC6B63B-2A37-4F8D-BDBD-36D09F584913@ketas.si.pri.ee> Organization: Junchoon corps X-Mailer: Sylpheed 3.7.0 (GTK+ 2.24.33; amd64-portbld-freebsd15.0) List-Id: Discussions about the use of FreeBSD-current List-Archive: https://lists.freebsd.org/archives/freebsd-current List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-current@FreeBSD.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 4h7vLT3Dtjz3HfH X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[]; ASN(0.00)[asn:7684, ipnet:153.125.128.0/18, country:JP] X-Spamd-Bar: ---- 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 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 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