Date: Fri, 29 May 2009 10:59:54 -0500 From: Paul Dokas <dokas@oitsec.umn.edu> To: freebsd-i386@FreeBSD.org Subject: pcm0:record:dsp0.r1: record interrupt timeout, channel dead Message-ID: <4A20067A.70601@oitsec.umn.edu>
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While attempting to get Skype working on my machine: (amd64 FreeBSD 7.1-RELEASE-p5) I ran into a nasty problem. Once I had linux emulation installed correctly, Skype seems to work just fine. Until I try to make an outbound call that is. Once Skype tries to enable the recording of sound through the mic jack, it starts complaining. I also get the following from the kernel: pcm0:record:dsp0.r1: record interrupt timeout, channel dead pcm0:record:dsp0.r1: record interrupt timeout, channel dead pcm0:record:dsp0.r1: record interrupt timeout, channel dead pcm0:record:dsp0.r1: record interrupt timeout, channel dead pcm0:record:dsp0.r1: record interrupt timeout, channel dead The same also happens if I just try to read from the dsp device: dd if=/dev/dsp0 of=/dev/null bs=1k count=16 Here are the devices that I've tried: pcm0: <Creative Audigy 2 (EMU10K2)> port 0xccc0-0xccff irq 30 at device 6.0 on pci7 pcm0: <SigmaTel STAC9750/51 AC97 Codec> pcm0: [ITHREAD] uaudio0: <Logitech Logitech USB Headset, class 0/0, rev 1.10/10.13, addr 2> on uhub3 uaudio0: ignored input endpoint of type adaptive uaudio0: audio rev 1.00 pcm1: <USB Audio> on uaudio0 Googling for this error turns up quite a few people seeing the same thing. And, sound(4) has this to say: pcm%d:play:%d:dsp%d.p%d: play interrupt timeout, channel dead The hard- ware does not generate interrupts to serve incoming (play) or outgoing (record) data. Ok, this seems pretty straight forward if a little cryptic. However, why is there no support for recording? Recording presumably works fine for Windows or Linux on the same hardware. What is missing in FreeBSD that causes this to break? And lastly, I would be remiss if I didn't ask for pointers on how to fix this problem. Any ideas? Thanks, Paul -- Paul Dokas dokas at oitsec.umn.edu ====================================================================== Don Juan Matus: "an enigma wrapped in mystery wrapped in a tortilla."
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