[ 5107.273042] usbhid 2-3:1.0: suspend error -5
[ 5107.644336] NVRM: Xid (PCI:0000:03:00): 79, GPU has fallen off the bus.)
[ 5107.644336]

+-----------------------------------------------------------------------------+
| NVIDIA-SMI 375.26                 Driver Version: 375.26                    |
|-------------------------------+----------------------+----------------------+
| GPU  Name        Persistence-M| Bus-Id        Disp.A | Volatile Uncorr. ECC |
| Fan  Temp  Perf  Pwr:Usage/Cap|         Memory-Usage | GPU-Util  Compute M. |
|===============================+======================+======================|
|   0  GeForce 840M        Off  | 0000:03:00.0     Off |                  N/A |
| N/A   47C    P0    N/A /  N/A |    242MiB /  2002MiB |     24%      Default |
+-------------------------------+----------------------+----------------------+

+-----------------------------------------------------------------------------+
| Processes:                                                       GPU Memory |
|  GPU       PID  Type  Process name                               Usage      |
|=============================================================================|
|    0      1409    G   /usr/lib/xorg/Xorg                             149MiB |
|    0      2471    G   compiz                                          92MiB |
|    0      2774    G   /usr/lib/firefox/firefox                         1MiB |
+-----------------------------------------------------------------------------+

$ sudo nvidia-smi -pm 1