Date: Sat, 7 Jan 2006 05:43:18 -0600 From: Nikolas Britton <nikolas.britton@gmail.com> To: Ariff Abdullah <ariff@freebsd.org> Cc: freebsd-multimedia@freebsd.org Subject: Re: Audio playing fast on 6.x (Looking for Ariff Abdullah) Message-ID: <ef10de9a0601070343w28e6d934j78b9ef77986efb2c@mail.gmail.com> In-Reply-To: <20060107000044.107d04ca.ariff@FreeBSD.org> References: <ef10de9a0601060433w10e1af6apc0dc90ce579712ce@mail.gmail.com> <20060106210703.5a6bc4d6.ariff@FreeBSD.org> <ef10de9a0601060624q51497ec3yc20a335a43b17d9c@mail.gmail.com> <20060107000044.107d04ca.ariff@FreeBSD.org>
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On 1/6/06, Ariff Abdullah <ariff@freebsd.org> wrote: > On Fri, 6 Jan 2006 08:24:02 -0600 > Nikolas Britton <nikolas.britton@gmail.com> wrote: > > > > Thanks for your quick reply. I tried the above and playback is still > > fast, changing it to any number doesn't seem to do anything. I also > > cannot set it with loader.conf. I have to do it manually after the > > system is loaded, Is this normal? Here is what I have in > > loader.conf: > > > > sound_load=3D"YES" > > snd_ich_load=3D"YES" > > hw.snd.pcm0.ac97rate=3D48000 > > hw.snd.ac97rate=3D48000 > > hint.pcm.0.ac97rate=3D"48000" > > hw.snd.maxautovchans=3D4 > > Put hw.* into /etc/sysctl.conf. > > Ok, since you said none of it works, how about this: > > # kldunload snd_ich > # kenv hint.pcm.0.vchanrate=3D48000 > # kldload snd_ich > # sysctl hw.snd.maxautovchans=3D4 > > Note: 1) anything that begin with hw.* should go into /etc/sysctl.conf > 2) anything that begin with hint.* should go into > /boot/device.hints > > Problem solved, solution: /etc/sysctl.conf: hw.snd.pcm0.ac97rate=3D56250 Turns out ac97rate was the problem but it needed to be bumped up, not down. I found two main threads and a PR with the same problem: May 2002, fast playback with Intel 82801BA (ICH2): http://groups.google.com/group/sol.lists.freebsd.multimedia/browse_thread/t= hread/799ffc490546679e/ Feb 2003, Hyperactive ICH2 sound (with workaround): http://groups.google.com/group/mailing.freebsd.current/browse_thread/thread= /f1017788cd486d50/ kern/31521 : [sound] pcm0 plays too fast on Intel 82801BA (ICH2): http://www.freebsd.org/cgi/query-pr.cgi?pr=3Dkern/31521
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