On Mon, 2 Jul 2012, Gary E. Miller wrote: > If I plug a USB headset into a USB 3 port on the SIIG I get this: > > usb 8-1.3: new full-speed USB device number 11 using xhci_hcd > usb 8-1.3: New USB device found, idVendor=0d8c, idProduct=0139 > usb 8-1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=0 > usb 8-1.3: Product: DYNEX USB Audio Device > usb 8-1.3: Manufacturer: C-Media Electronics Inc. > usb 8-1.3: Not enough bandwidth for new device state. > usb 8-1.3: can't set config #1, error -28 > > Similarly plugged into a USB 2.0 port on the SIIG: > > usb 8-1.1.1: new full-speed USB device number 12 using xhci_hcd > usb 8-1.1.1: New USB device found, idVendor=0d8c, idProduct=0139 > usb 8-1.1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 > usb 8-1.1.1: Product: DYNEX USB Audio Device > usb 8-1.1.1: Manufacturer: C-Media Electronics Inc. > usb 8-1.1.1: Not enough bandwidth for new device state. > usb 8-1.1.1: can't set config #1, error -28 That port may be a USB 2.0 port, but it is connected to the xHCI controller. This means that using it is exactly the same as using a USB 3.0 port with a USB 2.0 cable -- it's not a thorough test. In other words, it's very different from connecting the device to an EHCI controller. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
