Date: Fri, 28 Feb 2003 22:19:49 +0800 From: Jun Su <JunSu@gmx.net> To: freebsd-current@freebsd.org Subject: Re: Hyperactive ICH2 sound (with workaround) Message-ID: <200302282219.49377.JunSu@gmx.net> In-Reply-To: <1046293382.568.16.camel@localhost> References: <1046293382.568.16.camel@localhost>
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When I load snd_ich module, I got the following output. pcm0: <Intel 82801CA (ICH3)> port 0x18c0-0x18ff,0x1c00-0x1cff irq 9 at device 31.5 on pci0 pcm0: <unknown ac97 codec> (id=0x594d4803) pcm0: measured ac97 link rate at 682666666 Hz sysctl hw.snd.pcm0 : hw.snd.pcm0.buffersize: 16384 hw.snd.pcm0.vchans: 0 hw.snd.pcm0.ac97rate: 682666666 uname -v: FreeBSD 5.0-CURRENT #10: Fri Feb 28 11:53:30 CST 2003 I can play the sound, however the sound has lag. I am not sure if it is the porblem casued by the rate. When I play the sound, I get the same problem in the PR34942: http://www.FreeBSD.org/cgi/query-pr.cgi?pr=34942 Who can give some advice on this problem? Jun On Thursday 27 February 2003 05:03, Craig Boston wrote: > On a recently compiled current the sound from an Intel 82801BA > integrated sound chip seems to be accelerated (high pitched and too > fast). While it's amusing to listen to certain songs this way, I don't > think it should be the default mode of operation ;) > > Relevant dmesg output: > > pcm0: <Intel 82801BA (ICH2)> port 0xdc40-0xdc7f,0xd800-0xd8ff irq 10 at > device 31.5 on pci0 > pcm0: <Analog Devices AD1885 ac97 codec> > pcm0: measured ac97 link rate at 512000000 Hz > > and sysctl hw.snd.pcm0: > hw.snd.pcm0.buffersize: 16384 > hw.snd.pcm0.vchans: 0 > hw.snd.pcm0.ac97rate: 48000 > > Here is the output from another system with the same hardware running > 5.0-RELEASE: > > pcm0: <Intel 82801BA (ICH2)> port 0xcc40-0xcc7f,0xc800-0xc8ff irq 10 at > device 31.5 on pci0 > pcm0: measured ac97 link rate at 55939 Hz > > and the sysctl: > hw.snd.pcm0.buffersize: 16384 > hw.snd.pcm0.vchans: 4 > hw.snd.pcm0.ac97rate: 55939 > > So it looks like the AC97 link rate measurement isn't working right. > Manually setting it with "sysctl hw.snd.pcm0.ac97rate=55939" seems to > correct the problem. > > Current from about a week ago was working fine. A kernel from last > night exhibits this problem, as does one cvsupped this morning. I'll go > trawling through CVS when I have some free time. > > Not really a big deal, just wanted to make sure somebody was aware of > the problem and also to get the workaround into the mailing list > archives... > > Craig > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-current" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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