On Thu, Feb 09, 2017 at 05:30:11PM +0100, Paul Menzel wrote: > Feb 09 17:24:59 centos7 kernel: usb 3-8: USB disconnect, device number 59 > Feb 09 17:25:01 centos7 kernel: usb 3-8: new low-speed USB device number > 60 using xhci_hcd > Feb 09 17:25:01 centos7 kernel: usb 3-8: New USB device found, > idVendor=046d, idProduct=c077 > Feb 09 17:25:01 centos7 kernel: usb 3-8: New USB device strings: Mfr=1, > Product=2, SerialNumber=0 > Feb 09 17:25:01 centos7 kernel: usb 3-8: Product: USB Optical Mouse > Feb 09 17:25:01 centos7 kernel: usb 3-8: Manufacturer: Logitech > Feb 09 17:25:01 centos7 kernel: input: Logitech USB Optical Mouse as > /devices/pci0000:00/0000:00:14.0/usb3/3-8/3-8:1.0/input/input181 > Feb 09 17:25:01 centos7 kernel: hid-generic 0003:046D:C077.00B4: > input,hidraw1: USB HID v1.11 Mouse [Logitech USB Optical Mouse] on > usb-0000:00:14.0-8/input0 > ``` > > I am still wondering, how `usb3` or `usb1` gets into that path? Probably > depending on the port. I’ll try that tomorrow. That's the bus name (number). lsusb -t gives you an overview of what the topology looks like on your system. Note that an xHCI controller provides two (logical) buses; one for SuperSpeed devices and one for FullSpeed devices, even if the same physical ports are used for both. $ lsusb -t /: Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/6p, 5000M /: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/14p, 480M ... Johan -- 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
