ASROCK H81 PRO MB and DUAL VIDEO--
A number of thread-followers have mentioned that they run rigs on ASROCK H81 PRO motherboards. These boards support Intel CPU-Integrated graphics as well as a wide variety of graphic cards. Is it possible to drive a monitor with integrated Intel video, and mine with nVidia graphics cards (750ti SC)?
I will research the web before booting my new H81 rig, but I'd like to know if it has been done by any one of the readers.
Thank you in advance! --scryptr
I achieve this on Linux with the following xorg.conf
Section "Device"
Identifier "intel0"
Driver "intel"
BusID "PCI:0@0:2:0"
Option "AccelMethod" "SNA"
EndSection
Section "Screen"
Identifier "Screen0"
Device "intel0"
EndSection
Section "Device"
Identifier "nvidia0"
Driver "nvidia"
BusID "PCI:1@0:0:0"
Option "ConstrainCursor" "off"
Option "CoolBits" "28"
EndSection
Section "Screen"
Identifier "Screen1"
Device "nvidia0"
Option "AllowEmptyInitialConfiguration" "on"
Option "IgnoreDisplayDevices" "CRT"
EndSection
Section "Device"
Identifier "nvidia1"
Driver "nvidia"
BusID "PCI:2@0:0:0"
Option "ConstrainCursor" "off"
Option "CoolBits" "28"
EndSection
Section "Screen"
Identifier "Screen2"
Device "nvidia1"
Option "AllowEmptyInitialConfiguration" "on"
Option "IgnoreDisplayDevices" "CRT"
EndSection
Section "ServerLayout"
Identifier "layout"
Screen 0 "Screen0"
Screen 1 "Screen1"
Screen 2 "Screen2"
# Inactive "nvidia0"
# Inactive "nvidia1"
EndSection
In the "ServerLayout" section, I have the nvidia cards assigned to screens to allow NVML to work. It costs 18MB of VRAM to X, but I noticed no performance decrease. It is simple enough to disable this by commenting screens 1 and 2 and uncommenting the "Inactive" lines for them. You will lose temperature, fan speed, etc though.
EDIT: On Ubuntu, you'll also need to disable "gpu-manager" or the dumb ass thing will overwrite your xorg.conf everytime you log in. I just commented the entirety of /etc/init/gpu-manager.conf. Allegedly, this also can be done by passing a kernel param in newer (than 14.04) versions. Though I don't recall the name of said param.