calculate /home/diver # bumblebeed -vv
[  125.877804] [DEBUG]Found card: 01:00.0 (discrete)
[  125.877847] [DEBUG]Found card: 00:02.0 (integrated)
[  125.878469] [DEBUG]Reading file: /etc/bumblebee/bumblebee.conf
[  125.878779] [INFO]Configured driver: nvidia
[  125.878800] [DEBUG]Skipping auto-detection, using configured driver 'nvidia'
[  125.879062] [INFO]Loading driver 'bbswitch' (module 'bbswitch')
[  125.879126] [DEBUG]Loading module 'bbswitch'.
[  125.896967] [DEBUG]successfully loaded bbswitch
[  125.897006] [INFO]Switching method 'bbswitch' is available and will be used.
[  125.897019] [DEBUG]Active configuration:
[  125.897030] [DEBUG] bumblebeed config file: /etc/bumblebee/bumblebee.conf
[  125.897043] [DEBUG] X display: :8
[  125.897060] [DEBUG] LD_LIBRARY_PATH: /usr/lib64/opengl/nvidia/lib:/usr/lib32/opengl/nvidia/lib:/usr/lib/opengl/nvidia/lib
[  125.897073] [DEBUG] Socket path: /var/run/bumblebee.socket
[  125.897087] [DEBUG] pidfile: /var/run/bumblebeed.pid
[  125.897100] [DEBUG] xorg.conf file: /etc/bumblebee/xorg.conf.nvidia
[  125.897114] [DEBUG] xorg.conf.d dir: /etc/bumblebee/xorg.conf.d
[  125.897128] [DEBUG] Xorg binary: Xorg
[  125.897143] [DEBUG] ModulePath: /usr/lib64/opengl/nvidia/lib,/usr/lib64/opengl/nvidia/extensions,/usr/lib64/xorg/modules/drivers,/usr/lib64/xorg/modules
[  125.897157] [DEBUG] GID name: bumblebee
[  125.897170] [DEBUG] Power method: auto
[  125.897180] [DEBUG] Stop X on exit: 1
[  125.897193] [DEBUG] Driver: nvidia
[  125.897207] [DEBUG] Driver module: nvidia
[  125.897220] [DEBUG] Card shutdown state: 1
[  125.897376] [DEBUG]Configuration test passed.
[  125.897908] [INFO]bumblebeed 3.2.1-2017-01-30-Format:%h$ started
[  125.898277] [ERROR]Failed to unload module 'nvidia_drm' (ref count: 1).
[  125.898333] [ERROR]Failed to unload module 'nvidia_modeset' (ref count: 1).
[  125.898358] [ERROR]Failed to unload module 'nvidia' (ref count: 1).
[  125.898386] [DEBUG]Drivers are still loaded, unable to disable card
[  125.898397] [INFO]Initialization completed - now handling client requests