On 2012-12-22, Beni <navig...@grindcore.ch> wrote: > ehci0: Error opening low/full speed isoc endpoint. > A low/full speed device is attached to a USB2 hub, and transaction > translations are not yet supported. > Reattach the device to the root hub instead. > uaudio_chan_open: error creating pipe: err=INVAL endpt=0x01 > > My microphone is attached to the root hub of the machine, so I don't > really get what's this all about.
Try all the USB ports to make sure, and look for BIOS options to disable USB2 / EHCI, but it's fairly likely that if it's a modern machine you're out of luck without code to support transaction translations being written.
