Re: [LAD] snd-usb-audio dying on jackd xruns

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To: Clemens Ladisch <clemens@...>
Cc: <linux-audio-dev@...>
Date: Thursday, February 3, 2011 - 3:44 pm

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I got a new PCI USB 2.0 card and now I'm running Jackd at -n2 -p64. I
figured this was a hardware glitch. Thanks for confirming...

I'll still run debug on this and report. Which kernel did you want me to
test?

...Rods ;-)

On Thu, Feb 3, 2011 at 01:22, Clemens Ladisch wrote:

> Rods Bobavich wrote:

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I got a new PCI USB 2.0 card and now I'm running Jackd=
at -n2 -p64. I figured this was a hardware glitch. Thanks for confirming..=
.I'll still run debug on this and report. Which ker=
nel did you want me to test?

...Rods ;-)On Thu, Feb 3, 2011 at 01:22, Clemens Ladisch <clemens@ladisch.de> wrote:

Rods Bobavich wrote:

Pro,
This

Thank you for not mentioning this message on alsa-devel.

In the context of USB, the error code -75 means "babble", which i=
s
a technical term from the USB specification that means that the device
sent some data at a time when it shouldn't (or at least the controller<=
br>
thinks so).

> ALSA urb.c:146: timeout: still 7 active urbs..

> ALSA pcm.c:223: 4:2:1: usb_set_interface faile=
d

As a result of that, the USB controller driver gets wedged.

This looks like a hardware problem with your USB controller. =C2=A0Please t=
ry
the latest kernel; there were added some workarounds recently.

You might also try connecting the device through a hub (but there are
some bugs in the EHCI driver which might make it think that it cannot
schedule enough bandwidth for full duplex).

> CE: hpet increased min_delta_ns to 7500 nsec

Do we

No, this has nothing to do with USB. =C2=A0This message typically occurs on=

AMD system with C1E enabled, and is harmless.

Regards,
Clemens
--
Don't anthropomorphize computers; they don't like it.

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Messages in current thread:
[LAD] snd-usb-audio dying on jackd xruns, Rods Bobavich, (Wed Feb 2, 4:42 pm)
Re: [LAD] snd-usb-audio dying on jackd xruns, Gabriel Beddingfield, (Wed Feb 2, 4:58 pm)
Re: [LAD] snd-usb-audio dying on jackd xruns, Rods Bobavich, (Wed Feb 2, 5:24 pm)
Re: [LAD] snd-usb-audio dying on jackd xruns, Clemens Ladisch, (Thu Feb 3, 8:21 am)
Re: [LAD] snd-usb-audio dying on jackd xruns, Rods Bobavich, (Thu Feb 3, 3:44 pm)
Re: [LAD] snd-usb-audio dying on jackd xruns, Gabriel Beddingfield, (Wed Feb 2, 5:48 pm)
Re: [LAD] snd-usb-audio dying on jackd xruns, Rods Bobavich, (Wed Feb 2, 6:01 pm)
Re: [LAD] snd-usb-audio dying on jackd xruns, Arnold Krille, (Wed Feb 2, 7:00 pm)
Re: [LAD] snd-usb-audio dying on jackd xruns, Gabriel Beddingfield, (Wed Feb 2, 6:07 pm)
Re: [LAD] snd-usb-audio dying on jackd xruns, Rods Bobavich, (Wed Feb 2, 6:12 pm)
Re: [LAD] snd-usb-audio dying on jackd xruns, Gabriel Beddingfield, (Wed Feb 2, 6:20 pm)
Re: [LAD] snd-usb-audio dying on jackd xruns, Rods Bobavich, (Wed Feb 2, 6:42 pm)
Re: [LAD] snd-usb-audio dying on jackd xruns, Gabriel Beddingfield, (Wed Feb 2, 6:53 pm)
Re: [LAD] snd-usb-audio dying on jackd xruns, Rods Bobavich, (Wed Feb 2, 7:09 pm)
Re: [LAD] snd-usb-audio dying on jackd xruns, Gabriel Beddingfield, (Wed Feb 2, 7:25 pm)
Re: [LAD] snd-usb-audio dying on jackd xruns, Rods Bobavich, (Wed Feb 2, 11:40 pm)
Re: [LAD] snd-usb-audio dying on jackd xruns, Jeremy Jongepier, (Thu Feb 3, 9:51 am)
Re: [LAD] snd-usb-audio dying on jackd xruns, James Morris, (Thu Feb 3, 12:31 am)