Date: Thu, 03 Mar 2005 19:20:00 +0100 From: "J.E. Dooper" <saffisme@planet.nl> To: freebsd-questions@freebsd.org Subject: Audio latency Message-ID: <20050303182000.GA70922@dvorak.lan>
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Hi, My sound works and when I use mplayer or xmms I don't experience any (noticable!) audio latency. In applications like doomlegacy and quakeforge I do. I think this might be the problem: http://lists.freebsd.org/mailman/htdig/freebsd-questions/2004-August/055314.html Though I don't understand much about the solution... Some useful info: I'm using FreeBSD5.3-STABLE. Card: nForce2 onboard sound. And I compiled my kernel with "device sound". And I load the snd_ich.ko module. The output of `dmesg | grep pcm` : pcm0: <nVidia nForce2> port 0xd400-0xd47f,0xd000-0xd0ff mem 0xe7080000-0xe7080fff irq 21 at device 6.0 on pci0 pcm0: [GIANT-LOCKED] pcm0: <Avance Logic ALC650 AC97 Codec> The output of `cat /dev/sndstat` : FreeBSD Audio Driver (newpcm) Installed devices: pcm0: <nVidia nForce2> at io 0xd000, 0xd400 irq 21 bufsz 16384 kld snd_ich (1p/1r/0v channels duplex default) The output of `sysctl -a | grep pcm` : hw.snd.pcm0.buffersize: 16384 hw.snd.pcm0.vchans: 0 hw.snd.pcm0.ac97rate: 48000 dev.pcm.0.%desc: nVidia nForce2 dev.pcm.0.%driver: pcm dev.pcm.0.%location: slot=6 function=0 handle=\_SB_.PCI0.MACI dev.pcm.0.%pnpinfo: vendor=0x10de device=0x006a subvendor=0x1695 subdevice=0x100 0 class=0x040100 dev.pcm.0.%parent: pci0 The output of `sysctl -a | grep snd`: hw.snd.targetirqrate: 128 hw.snd.report_soft_formats: 1 hw.snd.verbose: 1 hw.snd.unit: 0 hw.snd.maxautovchans: 0 hw.snd.pcm0.buffersize: 16384 hw.snd.pcm0.vchans: 0 hw.snd.pcm0.ac97rate: 48000 My questions are: What could be causing this latency, and what can I do to fix this? Regards, Jorma
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