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

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To: Rods Bobavich <rodnisms@...>
Cc: <linux-audio-dev@...>
Date: Thursday, February 3, 2011 - 8:21 am

Rods Bobavich wrote:

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

In the context of USB, the error code -75 means "babble", which is
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
thinks so).

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

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

This looks like a hardware problem with your USB controller. Please try
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

No, this has nothing to do with USB. This 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)