On Fri, 7 Jan 2005, Torsten Landschoff wrote: > Hi Oliver, > > On Fri, Jan 07, 2005 at 12:37:26PM +0100, Oliver Brandt wrote: > > [USB Audio problems over USB 2.0 hub] > > > I've read that iso transfer and transaction translation have something > > to do with it and that transaction translation is not fully implemented > > yet (I'm using kernel 2.6.10). Are there any patches available I should > > use? > > Actually the problem AFAIU is that the audio device is managed by a > transaction translator in the hub. Therefore isochronous data transfer > at full speed gets more complicated. > > Linux 2.6.10 has an option to support iso transfers through transaction > translators but it is marked as experimental. I know it is switched on > for his computer but it does not seem to help. > > Any insights?
I think you have summed up the situation correctly. Development support for period transactions through TTs is proceeding, but slowly. In the meantime, two possible workarounds are to plug the audio device directly into the computer or to use a USB-1.1 hub. Alan Stern ------------------------------------------------------- The SF.Net email is sponsored by: Beat the post-holiday blues Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek. It's fun and FREE -- well, almost....http://www.thinkgeek.com/sfshirt _______________________________________________ [email protected] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
