Date: Tue, 20 Nov 2007 19:22:03 +0100 From: Roland Smith <rsmith@xs4all.nl> To: Frank Staals <frankstaals@gmx.net> Cc: questions@freebsd.org Subject: Re: snd_ich skipping playback Message-ID: <20071120182203.GA93313@slackbox.xs4all.nl> In-Reply-To: <47431E4D.3010702@gmx.net> References: <47431E4D.3010702@gmx.net>
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[-- Attachment #1 --] On Tue, Nov 20, 2007 at 06:50:05PM +0100, Frank Staals wrote: > I updated to RELENG_7 yesterday, but I'm noticing that the snd_ich driver > quite often skips playback for a short period of time at some points. > Especially when doing mysql queries. Anyone else having problems with > snd_ich ? > > frank@FStaals$ uname -a > FreeBSD FStaals.net 7.0-BETA3 FreeBSD 7.0-BETA3 #2: Mon Nov 19 19:50:46 CET > 2007 root@FStaals.net:/usr/obj/usr/src/sys/PFSERVERKERNEL amd64 > > frank@FStaals$ pciconf -lv > pcm0@pci0:0:4:0: class=0x040100 card=0x71851462 chip=0x005910de > rev=0xa2 hdr=0x00 > vendor = 'Nvidia Corp' > device = 'Realtek ALC850 Realtek AC'97 Audio' > class = multimedia > subclass = audio > > frank@FStaals$ dmesg | grep pcm > pcm0: <nVidia nForce4> port 0xea00-0xeaff,0xee00-0xeeff mem > 0xfe02d000-0xfe02dfff irq 23 at device 4.0 on pci0 > pcm0: [ITHREAD] > pcm0: <Avance Logic ALC850 AC97 Codec> I've had trouble with skipping sound some time ago on machines with another chipset; $ cat /dev/sndstat FreeBSD Audio Driver (newpcm: 64bit 2007061600/amd64) Installed devices: pcm0: <VIA VT8237> at io 0xd800 irq 22 [MPSAFE] (5p:4v/1r:1v channels duplex default) I put the following in /boot/device.hints # Larger DMA buffer for the soundcard, for better sound quality. hint.pcm.0.buffersize="16384" This fixed the problem for me. Roland -- R.F.Smith http://www.xs4all.nl/~rsmith/ [plain text _non-HTML_ PGP/GnuPG encrypted/signed email much appreciated] pgp: 1A2B 477F 9970 BA3C 2914 B7CE 1277 EFB0 C321 A725 (KeyID: C321A725) [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.4 (FreeBSD) iD8DBQFHQyXLEnfvsMMhpyURAnjkAJ90C4OBLX/dv6cioamCwHJ2OU2/bgCfZRsz 0nOlHUWnHT2CIluDkhPVEtY= =/W6p -----END PGP SIGNATURE-----help
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