This is a problem I am experience with the last 4 pc’s I had.  It randomly starts happening, it randomly goes away. At this time I have _no_ old hw connected anymore that could have caused it: dmesg output: [  914.271400] input: Logitech USB Receiver as /devices/pci0000:00/0000:00:1d.1/usb7/7-2/7-2:1.0/input/input71 [  914.317881] generic-usb 0003:046D:C508.0044: input,hidraw1: USB HID v1.10 read more »