On Tue, 21 Apr 2015, Tom Yan wrote: > Yes of course: Okay, the two devices appear to be the same as far as remote wakeup is concerned. The difference lies in the drivers. From your original report: > logitech-djreceiver 0003:046D:C52B.0003: hiddev0,hidraw0: USB HID > v1.11 Device [Logitech USB Receiver] on usb-0000:00:14.0-13/input2 > hid-generic 0003:046D:C52E.0005: input,hidraw2: USB HID v1.11 Keyboard > [Logitech USB Receiver] on usb-0000:00:14.0-14/input0 As you can see, the first device uses the logitech-djreceiver driver and the second uses the hid-generic driver. The generic driver includes code for enabling wakeup by default, but the logitech-djreceiver driver doesn't. In fact, it looks like none of the special-purpose HID drivers will enable wakeup by default. 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
