NVIDIA GeForce GTX 960M with Optimus on Arch Linux

etc_bumblebee_bumblebee.conf

#/etc/bumblebee/bumblebee.conf

[bumblebeed]
VirtualDisplay=:8
KeepUnusedXServer=false
ServerGroup=bumblebee
TurnCardOffAtExit=false
NoEcoModeOverride=false
Driver=nvidia
XorgConfDir=/etc/bumblebee/xorg.conf.d

[optirun]
Bridge=auto
VGLTransport=proxy
PrimusLibraryPath=/usr/lib/primus:/usr/lib32/primus
AllowFallbackToIGC=false

[driver-nvidia]
KernelDriver=nvidia
PMMethod=auto
LibraryPath=/usr/lib/nvidia:/usr/lib32/nvidia
XorgModulePath=/usr/lib/nvidia/xorg/,/usr/lib/xorg/modules
XorgConfFile=/etc/bumblebee/xorg.conf.nvidia

etc_bumblebee_xorg.conf.nvidia

#/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"
	BusID "PCI:1:0:0"
	Option "ProbeAllGpus" "false"
	Option "NoLogo" "true"
	Option "UseEDID" "false"
	Option "UseDisplayDevice" "none"
EndSection

etc_X11_xorg.conf

#/etc/X11/xorg.conf

Section "ServerLayout"
	Identifier "layout"
	Screen 0 "intel"
	Inactive "nvidia"
EndSection

Section "Device"
	Identifier "intel"
	Driver "intel"
	BusID "PCI:0:2:0"
	Option "AccelMethod" "sna"
EndSection

Section "Screen"
	Identifier "intel"
	Device "intel"
EndSection

Section "Device"
	Identifier "nvidia"
	Driver "nvidia"
	BusID "PCI:1:0:0"
EndSection

Section "Screen"
	Identifier "nvidia"
	Device "nvidia"
	Option "AllowEmptyInitialConfiguration" "Yes"
EndSection

NVIDIA_GeForce_GTX_960M_with_Optimus_on_Arch_Linux.rst

Packages

• bumblebee 3.2.1-10 (provides nvidia-libgl)
• mesa 11.0.4-1
• mesa-libgl 11.0.4-1
• nvidia 355.11-4 (Nvidia driver)
• primus 20150118-2 (Bumblebee bridge)
• xf86-video-intel 1:2.99.917+478+gdf72bc5-2 (Intel driver)
• xorg-server 1.17.3-1 (xorg)
• xorg-xrandr 1.4.3-1

After doing this, the fans just go crazy starting X.

Everything works smoothly, but the fans starts screaming like if they were an air-plane.

Do you know how to solve it?

One thing I did not see is the Bumblebeed status:

● bumblebeed.service - Bumblebee C Daemon
   Loaded: loaded (/usr/lib/systemd/system/bumblebeed.service; enabled; vendor preset: disabled)
   Active: active (running) since Wed 2017-06-21 10:01:43 -05; 4min 6s ago
 Main PID: 419 (bumblebeed)
    Tasks: 1 (limit: 4915)
   CGroup: /system.slice/bumblebeed.service
           └─419 /usr/bin/bumblebeed

jun 21 10:05:27 rog-csampedro bumblebeed[419]: [  240.351298] [WARN][XORG] (WW) Open ACPI failed (/var/run/acpid.socket) (No such file or directory)
jun 21 10:05:27 rog-csampedro bumblebeed[419]: [  240.351301] [WARN][XORG] (WW) Warning, couldn't open module mouse
jun 21 10:05:27 rog-csampedro bumblebeed[419]: [  240.351307] [ERROR][XORG] (EE) No devices detected.
jun 21 10:05:27 rog-csampedro bumblebeed[419]: [  240.351309] [ERROR][XORG] (EE)
jun 21 10:05:27 rog-csampedro bumblebeed[419]: [  240.351311] [ERROR][XORG] (EE) no screens found(EE)
jun 21 10:05:27 rog-csampedro bumblebeed[419]: [  240.351313] [ERROR][XORG] (EE)
jun 21 10:05:27 rog-csampedro bumblebeed[419]: [  240.351315] [ERROR][XORG] (EE) Please also check the log file at "/var/log/Xorg.8.log" for additional information.
jun 21 10:05:27 rog-csampedro bumblebeed[419]: [  240.351317] [ERROR][XORG] (EE)
jun 21 10:05:27 rog-csampedro bumblebeed[419]: [  240.351318] [ERROR][XORG] (EE) Server terminated with error (1). Closing log file.
jun 21 10:05:27 rog-csampedro bumblebeed[419]: [  240.370313] [ERROR]X did not start properly

@camilosampedro -> no screens found. I think you need configure xorg, screen sections.

@camilosampedro I have the same problem, did you manage to solve it?