Hi!
A few days ago in the alsa users mailing list, Clemens pointed to a
recent patch for the EHCI driver [1] [2] for solving the following problem:
The current TT scheduling doesn't allow to play and then record on a
full-speed device connected to a high speed hub.
In connection with this, there was a discussion here some months ago
[3]. Some users said that they were not able to get jack working in
duplex mode . I also tried to prepare my sister's notebook with a UA25EX
and duplex did not work either. I encountered the same problem in the
laptop of a friend of mine. In both cases, the computers have an Intel 5
Series/3400 Series Chipset USB2 controller. Jack always says "broken
pipe".
I have not tried the patch yet but it seems to work if you read the
whole thread in alsa-users. Has someone else tried? Joan? Jeremy?
Regards, Pablo
[1]
http://www.mail-archive.com/alsa-user@email-addr-hidden/msg28007.html
[2] http://marc.info/?l=linux-usb&m=131973404328622
[3]
http://old.nabble.com/USB-audio-interface-and-a-buggy-USB-controller-td29638759.html
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Received on Tue Nov 8 00:15:01 2011
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