我有一台配备专用 nVidia Geforce 940MX GPU 的笔记本电脑。我按照https://wiki.ubuntu.com/Bumblebee但每当我想运行optirun glxgears它就会失败并显示消息
[ 663.222353] [ERROR]Cannot access secondary GPU - error: Could not load GPU driver
[ 663.222380] [ERROR]Aborting because fallback start is disabled.
我尝试按照说明/etc/bumblebee/xorg.conf.nvidia输入正确的 BusID，但给出lspci | egrep 'VGA|3D'的输出
00:02.0 VGA compatible controller: Intel Corporation HD Graphics 620 (rev 02) 01:00.0 3D controller: NVIDIA Corporation Device 179c (rev a2)
与 xorg.conf.nvidia 文件中指定的 BusID 相同。我不知道如何解决这个问题。在 manjaro linux 中，它可以与专有驱动程序完美配合，但在 Ubuntu 中似乎不起作用。
如果有人感兴趣的话，这是我的 xorg.conf.nvidia 文件：
Section "ServerLayout"
Identifier "Layout0"
Option "AutoAddDevices" "false"
Option "AutoAddGPU" "false"
EndSection
Section "Device"
Identifier "DiscreteNvidia"
Driver "nvidia"
VendorName "NVIDIA Corporation"
# If the X server does not automatically detect your VGA device,
# you can manually set it here.
# To get the BusID prop, run `lspci | egrep 'VGA|3D'` and input the data
# as you see in the commented example.
# This Setting may be needed in some platforms with more than one
# nvidia card, which may confuse the proprietary driver (e.g.,
# trying to take ownership of the wrong device). Also needed on Ubuntu 13.04.
BusID "PCI:01:00:0"
# Setting ProbeAllGpus to false prevents the new proprietary driver
# instance spawned to try to control the integrated graphics card,
# which is already being managed outside bumblebee.
# This option doesn't hurt and it is required on platforms running
# more than one nvidia graphics card with the proprietary driver.
# (E.g. Macbook Pro pre-2010 with nVidia 9400M + 9600M GT).
# If this option is not set, the new Xorg may blacken the screen and
# render it unusable (unless you have some way to run killall Xorg).
Option "ProbeAllGpus" "false"
Option "NoLogo" "true"
Option "UseEDID" "false"
Option "UseDisplayDevice" "none"
EndSection