12.04.3上のBumblebee：セカンダリGPUにアクセスできません
\ o
タイトルはそれを言う：バンブルビーを動作させようとしている。
システム仕様：MSI GE70 w/Nvidia GeForce 765m
インストールされたドライバー：
morphheus@nyx:~$ dpkg --get-selections | grep nvidia
bumblebee-nvidia install
nvidia-331 install
nvidia-persistenced install
nvidia-settings-331 install
Optirunを使用しようとすると、これが表示されます。
morphheus@nyx:~$ optirun -vv glxspheres
[ 1146.020489] [DEBUG]Reading file: /etc/bumblebee/bumblebee.conf
[ 1146.020756] [INFO]Configured driver: nvidia
[ 1146.020918] [DEBUG]optirun version 3.2.1 starting...
[ 1146.020929] [DEBUG]Active configuration:
[ 1146.020932] [DEBUG] bumblebeed config file: /etc/bumblebee/bumblebee.conf
[ 1146.020935] [DEBUG] X display: :8
[ 1146.020938] [DEBUG] LD_LIBRARY_PATH: /usr/lib/nvidia-331:/usr/lib32/nvidia-331
[ 1146.020942] [DEBUG] Socket path: /var/run/bumblebee.socket
[ 1146.020945] [DEBUG] Accel/display bridge: auto
[ 1146.020948] [DEBUG] VGL Compression: proxy
[ 1146.020951] [DEBUG] VGLrun extra options:
[ 1146.020954] [DEBUG] Primus LD Path: /usr/lib/x86_64-linux-gnu/primus:/usr/lib/i386-linux-gnu/primus
[ 1146.020981] [DEBUG]Using auto-detected bridge virtualgl
[ 1146.041706] [INFO]Response: No - error: [XORG] (EE) No devices detected.
[ 1146.041720] [ERROR]Cannot access secondary GPU - error: [XORG] (EE) No devices detected.
[ 1146.041723] [DEBUG]Socket closed.
[ 1146.041737] [ERROR]Aborting because fallback start is disabled.
[ 1146.041740] [DEBUG]Killing all remaining processes.
私のbumblebee.confファイル：
morphheus@nyx:~$ more /etc/bumblebee/bumblebee.conf
# Configuration file for Bumblebee. Values should **not** be put between quotes
## Server options. Any change made in this section will need a server restart
# to take effect.
[bumblebeed]
# The secondary Xorg server DISPLAY number
VirtualDisplay=:8
# Should the unused Xorg server be kept running? Set this to true if waiting
# for X to be ready is too long and don't need power management at all.
KeepUnusedXServer=false
# The name of the Bumbleblee server group name (GID name)
ServerGroup=bumblebee
# Card power state at exit. Set to false if the card shoud be ON when Bumblebee
# server exits.
TurnCardOffAtExit=false
# The default behavior of '-f' option on optirun. If set to "true", '-f' will
# be ignored.
NoEcoModeOverride=false
# The Driver used by Bumblebee server. If this value is not set (or empty),
# auto-detection is performed. The available drivers are nvidia and nouveau
# (See also the driver-specific sections below)
Driver=nvidia
# Directory with a dummy config file to pass as a -configdir to secondary X
XorgConfDir=/etc/bumblebee/xorg.conf.d
## Client options. Will take effect on the next optirun executed.
[optirun]
# Acceleration/ rendering bridge, possible values are auto, virtualgl and
# primus.
Bridge=auto
# The method used for VirtualGL to transport frames between X servers.
# Possible values are proxy, jpeg, rgb, xv and yuv.
VGLTransport=proxy
# List of paths which are searched for the primus libGL.so.1 when using
# the primus bridge
PrimusLibraryPath=/usr/lib/x86_64-linux-gnu/primus:/usr/lib/i386-linux-gnu/primus
# Should the program run under optirun even if Bumblebee server or nvidia card
# is not available?
AllowFallbackToIGC=false
# Driver-specific settings are grouped under [driver-NAME]. The sections are
# parsed if the Driver setting in [bumblebeed] is set to NAME (or if auto-
# detection resolves to NAME).
# PMMethod: method to use for saving power by disabling the nvidia card, valid
# values are: auto - automatically detect which PM method to use
# bbswitch - new in BB 3, recommended if available
# switcheroo - vga_switcheroo method, use at your own risk
# none - disable PM completely
# https://github.com/Bumblebee-Project/Bumblebee/wiki/Comparison-of-PM-methods
## Section with nvidia driver specific options, only parsed if Driver=nvidia
[driver-nvidia]
# Module name to load, defaults to Driver if empty or unset
KernelDriver=nvidia-331
PMMethod=auto
# colon-separated path to the nvidia libraries
LibraryPath=/usr/lib/nvidia-331:/usr/lib32/nvidia-331
# comma-separated path of the directory containing nvidia_drv.so and the
# default Xorg modules path
XorgModulePath=/usr/lib/nvidia-331/xorg,/usr/lib/xorg/modules
XorgConfFile=/etc/bumblebee/xorg.conf.nvidia
## Section with nouveau driver specific options, only parsed if Driver=nouveau
[driver-nouveau]
KernelDriver=nouveau
PMMethod=auto
XorgConfFile=/etc/bumblebee/xorg.conf.nouveau
私のxorg.conf.nvidiaファイル：
morphheus@nyx:~$ more /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
私はいまいましい時間を機能させようとしています：P
統合されたグラフィックスは正常に動作します（glxsphereでは60 fps [モニターのリフレッシュレートで制限されていると仮定します]）が、専用のGPUを使用したいと思います。
どうもありがとう！
xorg.conf.nvidiaのBusID "PCI：01：00：0"のコメントを外し、GPUのPCI IDを変更し、lspci | grep NVIDIAコマンドを実行してGPU IDを取得できます。