fix confirmed uname -rm 3.15.5-1.g01d2774-desktop x86_64 journalctl -b | grep kernel | egrep -i "xhci|trace" Jul 11 08:09:16 localhost kernel: ftrace: allocating 24222 entries in 95 pages Jul 11 08:09:17 localhost kernel: xhci_hcd 0000:02:00.0: xHCI Host Controller Jul 11 08:09:17 localhost kernel: xhci_hcd 0000:02:00.0: new USB bus registered, assigned bus number 3 Jul 11 08:09:17 localhost kernel: xhci_hcd 0000:02:00.0: irq 46 for MSI/MSI-X Jul 11 08:09:17 localhost kernel: usb usb3: Product: xHCI Host Controller Jul 11 08:09:17 localhost kernel: usb usb3: Manufacturer: Linux 3.15.5-1.g01d2774-desktop xhci_hcd Jul 11 08:09:17 localhost kernel: xhci_hcd 0000:02:00.0: xHCI Host Controller Jul 11 08:09:17 localhost kernel: xhci_hcd 0000:02:00.0: new USB bus registered, assigned bus number 4 Jul 11 08:09:17 localhost kernel: usb usb4: Product: xHCI Host Controller Jul 11 08:09:17 localhost kernel: usb usb4: Manufacturer: Linux 3.15.5-1.g01d2774-desktop xhci_hcd Jul 11 08:09:18 localhost kernel: usb 3-1: new high-speed USB device number 2 using xhci_hcd Jul 11 08:09:18 localhost kernel: usb 3-1.3: new high-speed USB device number 3 using xhci_hcd Jul 11 08:09:18 localhost kernel: usb 4-1: new SuperSpeed USB device number 2 using xhci_hcd thanks! -- 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