尝试使用 NVIDIA GPU 时找不到设备

Question

我正在尝试将 Bumblebee 用于我的 NVIDIA GPU，但在运行程序时遇到了错误。

我正在使用 Minecraft 客户端对其进行测试，该客户端实际上已启动，但片刻后崩溃。

$ primusrun java -jar Minecraft.jar
# some normal output...
primus: fatal: Bumblebee daemon reported: error: [XORG] (EE) No devices detected.

我可以很好地看到卡片：

$ lspci | grep 3D
01:00.0 3D controller: NVIDIA Corporation GK107M [GeForce GT 750M] (rev a1)

这个设置在同一台机器上的 Arch 下运行良好。不确定什么配置不正确。

编辑：

$ lspci -nnk | grep -iA2 VGA
00:02.0 VGA compatible controller [0300]: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller [8086:0416] (rev 06)
Subsystem: CLEVO/KAPOK Computer Device [1558:0650]
Kernel driver in use: i915

我的主要显卡是 Intel，因为这是一台 Optimus 机器。

编辑2：

$ optirun -vv --debug glxspheres
[ 2643.983966] [DEBUG]Reading file: /etc/bumblebee/bumblebee.conf
[ 2643.984989] [DEBUG]optirun version 3.2.1 starting...
[ 2643.985038] [DEBUG]Active configuration:
[ 2643.985066] [DEBUG] bumblebeed config file: /etc/bumblebee/bumblebee.conf
[ 2643.985096] [DEBUG] X display: :8
[ 2643.985123] [DEBUG] LD_LIBRARY_PATH: /usr/lib/nvidia-304:/usr/lib32/nvidia-304
[ 2643.985152] [DEBUG] Socket path: /var/run/bumblebee.socket
[ 2643.985179] [DEBUG] Accel/display bridge: auto
[ 2643.985207] [DEBUG] VGL Compression: proxy
[ 2643.985235] [DEBUG] VGLrun extra options: 
[ 2643.985262] [DEBUG] Primus LD Path: /usr/lib/x86_64-linux-gnu/primus:/usr/lib/i386-linux-gnu/primus
[ 2643.985525] [DEBUG]Using auto-detected bridge primus
[ 2644.041849] [INFO]Response: No - error: [XORG] (EE) No devices detected.

[ 2644.041877] [ERROR]Cannot access secondary GPU - error: [XORG] (EE) No devices detected.

[ 2644.041890] [DEBUG]Socket closed.
[ 2644.041912] [ERROR]Aborting because fallback start is disabled.
[ 2644.041923] [DEBUG]Killing all remaining processes.

编辑 3：

我的/etc/bumblebee/xorg.conf.nvidia：

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

Answer 1

[ERROR] Cannot access secondary GPU - error: [XORG] (EE) No devices detected.

您需要编辑/etc/bumblebee/xorg.conf.nvidia（或者/etc/bumblebee/xorg.conf.nouveau如果使用 noveau 驱动程序）并按照其中的说明指定正确的 BusID。

xorg.conf例如，您应该看起来像这样：

Section "Device"
    Identifier     "DiscreteNvidia"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "GeForce XXXXX"
    BusID          "PCI:2:0:0"
EndSection

找出并替换XXXX为您的确切命令BoardName和BusID命令：

sudo nvidia-xconfig --query-gpu-info

在此重新启动sudo service lightdm restart或重新启动后将起作用。