Date: Fri, 09 Feb 2001 03:03:59 -0800 (PST) From: John Baldwin <jhb@FreeBSD.ORG> To: Mike Holling <myke@fks.bt> Cc: current@FreeBSD.ORG, Ilya Naumov <camel@avias.com> Subject: Re: problems with playback via pcm device Message-ID: <XFMail.010209030359.jhb@FreeBSD.org> In-Reply-To: <Pine.BSF.4.30.0102090353150.97649-100000@hammerhead.fks.lan>
next in thread | previous in thread | raw e-mail | index | archive | help
On 09-Feb-01 Mike Holling wrote: >> i have Ensoniq ES1371-based soundcard supported by pcm driver and >> experience some problems. the sound played is interruped by clicks and >> distorsions, and they appear more often when the disk activity is high. >> during playback the kernel generates messages like 'pcm0: hwptr went >> backwards 64 -> 32'. any ideas? > > I have similar problems, except the disruptions only seem to occur during > keyboard activity. I ran a cvsup while using mpg123 and had no problems, > which is pretty impressive since the machine is a P133. However, even a > small amount of typing causes noticeable audio glitches. This happens > both with a ES1371 and an old SB16 ISA card. It seems I may also be > losing keystrokes from the keyboard, though I haven't confirmed it's not a > problem with the keyboard itself. This could be related to the entropy gathering by the random kthread. Have you tried removing the random device from your kernel? > - Mike -- John Baldwin <jhb@FreeBSD.org> -- http://www.FreeBSD.org/~jhb/ PGP Key: http://www.Baldwin.cx/~john/pgpkey.asc "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?XFMail.010209030359.jhb>