On 03/03/2017 04:59 PM, László Monda wrote:
Dear List, About 2 years ago, I used to be able to dump the USB report descriptors of my input devices after unlinking them, but for some reason, not anymore. root@spark ~ # dmesg | tail [239486.804224] logitech-hidpp-device 0003:046D:404D.02B3: input,hidraw5: USB HID v1.11 Keyboard [Logitech K400 Plus] on usb-0000:00:14.0-10.3:1 [239535.214726] usb 2-10.3: USB disconnect, device number 115 [239538.010455] usb 2-10.3: new full-speed USB device number 116 using xhci_hcd [239538.125768] usb 2-10.3: New USB device found, idVendor=046d, idProduct=c52b [239538.125770] usb 2-10.3: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [239538.125771] usb 2-10.3: Product: USB Receiver [239538.125772] usb 2-10.3: Manufacturer: Logitech [239538.135925] logitech-djreceiver 0003:046D:C52B.02B6: hiddev0,hidraw4: USB HID v1.11 Device [Logitech USB Receiver] on usb-0000:00:14.0-10.3/input2 [239538.264789] input: Logitech K400 Plus as /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10.3/2-10.3:1.2/0003:046D:C52B.02B6/0003:046D:404D.02B7/input/input340 [239538.264987] logitech-hidpp-device 0003:046D:404D.02B7: input,hidraw5: USB HID v1.11 Keyboard [Logitech K400 Plus] on usb-0000:00:14.0-10.3:1 root@spark ~ # echo -n 2-10.3 > /sys/bus/usb/drivers/usb/unbind root@spark ~ # lsusb -vd 046d:c52b
Try to use strace and see what fails: strace lsusb -vd 046d:c52b Cheers, -- Krzysztof Opasiak Samsung R&D Institute Poland Samsung Electronics -- 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
