Установил bumblebee по этой теме https://www.unixmen.com/how-to-make-nvidia-optimus-technology-work-properly-on-debian/ Когда пытаюсь затестить, получаю следующее :
optirun glxgears
[ 71.766054] [ERROR]Cannot access secondary GPU - error: [XORG] (EE) /dev/dri/card0: failed to set DRM interface version 1.4: Permission denied
[ 71.766089] [ERROR]Aborting because fallback start is disabled.
Система debian 8, ноут Dell inspiron 7720 (gt 650m)