Date: Thu, 2 May 2002 15:06:05 -0700 From: Alfred Perlstein <bright@mu.org> To: Orion Hodson <hodson@icir.org> Cc: freebsd-multimedia@freebsd.org Subject: Re: fast playback with Intel 82801BA (ICH2) Message-ID: <20020502220605.GC36741@elvis.mu.org> In-Reply-To: <200205020108.g42188v67590@puma.icir.org> References: <20020502004915.GN98487@elvis.mu.org> <200205020108.g42188v67590@puma.icir.org>
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* Orion Hodson <hodson@icir.org> [020501 18:10] wrote:
> /-- Alfred Perlstein wrote:
> | -current compiled today mp3s play too fast, any ideas on how to
> | diagnose this?
> |
> | pcm0: <Intel 82801BA (ICH2)> port 0xef00-0xef3f,0xe800-0xe8ff irq 9 at device
> | 31.5 on pci0
> | pcm0: measured ac97 link rate at 44061 Hz
>
> You can set a sysctl to set the ac97 link rate. I don't recall offhand what
> it is (hw.snd.pcm0.ac97rate?) - "sysctl -a | grep ac97" will find it.
>
> There is a calibration test in the ich code since various mfrs do funny things
> with the clock. I'd be interested to know what boot -v output is and what
> ac97 link rate works. This is the second box reported failing on this
> recently.
/usr/src/sys/sys % sysctl -a | grep ac97
ac97 2 1K 1K 2 16,256
hw.snd.pcm0.ac97rate: 44061
I can get you boot -v later.
--
-Alfred Perlstein [alfred@freebsd.org]
'Instead of asking why a piece of software is using "1970s technology,"
start asking why software is ignoring 30 years of accumulated wisdom.'
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