> The idea is to use the uhci_hcd (USB1) driver instead of ehci_hcd > (USB2). -- Maybe the module is not loaded? You do not have a UHCI controller. You only have EHCI controllers. On your machine, all USB 1.1 is handled by transaction translators in your EHCI controller's root hub. The UHCI driver is not a USB 1.1 driver-- it's a driver for UHCI hardware which happens to be for USB 1.1, and which you do not have at all. Older machines paired a UHCI and EHCI controller to handle USB 1.1 and 2.0; newer machines use EHCI for both. The linux EHCI TT scheduler is not very good. I wrote a new one from scratch a few years ago, but the kernel people considered it low priority and I got sick of maintaining it against updates, as they dropped it from testing kernels whenever any other incoming patch conflicted. OTOH, the EHCI hardware itself is much more reliable than the UHCI hardware, which apparently suffers from isochronous dropouts even when the driver functions perfectly. Monty _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
