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# Example xorg.conf file for a muxless dual-gpu system,
# e.g., a muxless Laptop, where an Intel iGPU is used
# to drive the experimenter/GUI display on X-Screen 0,
# an AMD dGPU is used to drive the visual stimulation
# display on X-Screen 1. This setup could be found on
# a Laptop where the iGPU is not connected to the external
# display outputs - it is only driving the internal
# Laptop flat panel. The dGPU is connected only to the
# external outputs - it is only driving external displays,
# e.g., for visual stimulation.
# In such a case the best setup is to assign one X-Screen
# to each gpu, like demonstrated here. You would need to
# adapt this xorg.conf to your specific hardware though,
# e.g., select proper BusId parameters for your hardware.
#
# The most common muxless laptops nowadays only have the
# iGPU connected to *all* display outputs (internal and
# external), the dGPU is not connected to anything. For
# that config, Psychtoolbox XOrgConfCreator can automatically
# create suitable config files for so called DRI/Prime render
# offload. Iow. for such Laptops this example config or similar
# ones do not apply.
Section "ServerLayout"
Identifier "Hydra-2XScreensOn2GPUs"
Screen 0 "Screen0" 0 0
Screen 1 "Screen1" RightOf "Screen0"
EndSection
Section "Device"
Identifier "Card1"
Driver "amdgpu"
BusID "PCI:1:0:0"
Option "DRI" "3"
EndSection
Section "Device"
Identifier "Card0"
Driver "intel"
BusID "PCI:0:2:0"
Option "Tearfree" "off"
Option "DRI" "3"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Card0"
EndSection
Section "Screen"
Identifier "Screen1"
Device "Card1"
EndSection
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