Bug#963980: bumblebee-nvidia: Bumblebee daemon reported: error: [XORG] (EE) Unable to locate/open config directory

[Vincas Dargis]

from `/var/log/Xorg.8.log`

[  2486.434] (II) NVIDIA dlloader X Driver  450.66  Wed Aug 12 19:44:12 UTC 2020
[  2486.434] (II) NVIDIA Unified Driver for all Supported NVIDIA GPUs
[  2486.435] (EE) No devices detected.
[  2486.435] (EE)
Fatal server error:
[  2486.435] (EE) no screens found(EE)
[  2486.435] (EE)

So maybe this latest 450.66 simply does not support my `GM107M [GeForce GTX 860M]`, or just because of some bug?