Bumblebeeonubuntu13.04 solution for no graphic device detected [same for dual-graphics cards]

Bumblebeeonubuntu13.04 no graphic device solution [same for dual graphics cards]: [ERROR] CannotaccesssecondaryGPU-error: [XORG] (EE) Nodevicesdetected. [ERROR] Abortingbecausefallbacksta bumblebee on ubuntu13.04 no solution for graphics devices detected [same for dual graphics cards] situation: [ERROR] Cannot access secondary GPU-error: [XORG] (EE) no devices detected. [ERROR] Aborting because fallback start is disabled. nvidia driver case: root @ crper-Aspire-5755G :~ # Lspci | grep VGA. 0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09. 0 VGA compatible controller: NVIDIA Corporation gfw.m [GeForce GT 630 M] (rev ff) gets your exclusive BUSID... that's. 0. modify vim/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 ca Rd, 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 runn Ing # more than one nvidia graphics card with the proprietary driver. # (E. g. macbook Pro pre-2010 with nVidia 9400 M + 9600 m 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 Comment out and modify the PCI number (you get the exclusive BUSID number). it is worth noting that the last digit of the obtained idnumber must be a colon. that is, modify the main Configuration file of bumblebee by PCI: 01: 00: 0 # Configuration file for Bumblebee. values shoshould ** 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 # shocould 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' wil L # be ignored. noEcoModeOverride = false # The Driver used by Bumblebee server. if this value is not set (or empty), # auto-detection is already Med. 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 ef Fect 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/li B/x86_64-linux-gnu/primus:/usr/lib/i386-linux-gnu/primus # shocould 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 ). # p0000hod: 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-current p1_hod = auto # colon-separated path to the nvidia libraries LibraryPath =/usr/lib/nvidia-current: /usr/lib32/nvidia-current # comma-separated path of the directory containing nvidia_drv.so and the # default Xorg modules path XorgModulePath =/usr/lib/nvidia-current/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 p0000hod = auto XorgConfFile =/etc/bumblebee/xorg. conf. nouveau modify Driver = nvidiaKernelDriver = nvidia-currentModule = nvidia