, try lsusb to check USB device is presentBus 002 Device 001: ID 1d6b:0003 LinuxBus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hubroot@coalminer:~# dkms statusnvidia, 390.59, 4.4.0
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hubBus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hubBus 002 Device 001: ID 1d6b:0002 Linux Foundation