Re: [LAU] Cracking sound via USB (ALSA urb.c:480: frame 5 active: -18)

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To: <linux-audio-user@...>
Date: Wednesday, May 25, 2011 - 6:55 am

On 05/25/2011 01:36 AM, Aurélien Leblond wrote:

http://lists.linuxaudio.org/pipermail/linux-audio-user/2010-June/070353....

So not mixing USB1 and USB2 devices but mixing a device performing
Full-Speed isochronous-out transactions with a device performing
asynchronous transactions. I've tested my Edirol UA-25 with this chipset
too and no matter what I tried, full duplex wouldn't work. Does your
machine have a Rate Matching Hub? If so could this be the device that
does asynchronous transactions maybe? Just guessing here. Or is USB2
isochronous and USB1 asynchronous?

Best,

Jeremy
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Messages in current thread:
Re: [LAU] Cracking sound via USB (ALSA urb.c:480: frame 5 ac..., Aurélien Leblond, (Tue May 24, 11:36 pm)
Re: [LAU] Cracking sound via USB (ALSA urb.c:480: frame 5 ac..., Jeremy Jongepier, (Wed May 25, 6:55 am)