On 05/25/2011 11:19 AM, Aurélien Leblond wrote: >> http://lists.linuxaudio.org/pipermail/linux-audio-user/2010-June/070353.html >> >> 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? > > I read this bug description by Intel, and the sentence that decided me > to buy a USB2 soundcard is this: > "High-Speed and Low-Speed USB devices are not impacted by this issue." > Low-Speed = USB 1.0 Full-Speed = USB 1.1 High-Speed = USB 2.0 SuperSpeed = USB 3.0 I think this sentence refers to any device other than an audio device. > I actually have an Edirol UA-25Ex that plainly doeson't work on these > USB ports, so I went for the M-Audio USB2 High-Speed hoping that would > solve the problem! > Apparently it doesn't :( Worst case scenario would be that you'd have to get yourself a USB 2.0 PCIe Express Card to get it to work. Or go FireWire, but then you'll need an Express Card also. Best, Jeremy _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
