Pablo Yaggi wrote: > I'm working in a multi-capture application with alsa and i discovered > if i attach two "c-media usb headphone set" adapters to an usb hub which > is attached to my computer when i try to read from the two devices the > first one read (also open) errors with (-77) bad file descriptor status > and the other one keep working. When i attach the two devices directly to > the usb connectors (without hub) all works fine, the two devices can be > read at the same time. What kernel version are you using? The EHCI transaction translator code (which is responsible for moving audio data through an high speed hub) got a bugfix in 2.6.17, but still artificially limits the bandwidth. It will be rewritten in 2.6.18. HTH Clemens ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys -- and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-devel
