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unity
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xorg
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🔍 See Original Answer on Ask Ubuntu ⧉ 🔗
URL:
https://askubuntu.com/q/1056431
Title:
Force Xorg to use CPU not GPU
ID:
/2018/07/16/Force-Xorg-to-use-CPU-not-GPU
Created:
July 16, 2018
Edited: February 21, 2019
Upload:
September 15, 2024
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This answer: Use integrated graphics for display and NVIDIA GPU for CUDA on Ubuntu 14.04 appears relevant for you.
In summary setting up /etc/X11/xorg.conf as follows:
Section "ServerLayout"
Identifier "layout"
Screen 0 "intel"
Screen 1 "nvidia"
EndSection
Section "Device"
Identifier "intel"
Driver "intel"
BusID "PCI:0@0:2:0"
Option "AccelMethod" "SNA"
EndSection
Section "Screen"
Identifier "intel"
Device "intel"
EndSection
Section "Device"
Identifier "nvidia"
Driver "nvidia"
BusID "PCI:1@0:0:0"
Option "ConstrainCursor" "off"
EndSection
Section "Screen"
Identifier "nvidia"
Device "nvidia"
Option "AllowEmptyInitialConfiguration" "on"
Option "IgnoreDisplayDevices" "CRT"
EndSection
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According Asus Canada specs:
Integrated Graphics Processor- Intel® HD Graphics support Multi-VGA
output support : HDMI/DVI-D/RGB/DisplayPort ports
- Supports HDMI with max. resolution 4096 x 2160 @ 24 Hz / 2560 x 1600 @ 60 Hz
- Supports DVI-D with max. resolution 1920 x 1200 @ 60 Hz
- Supports RGB with max. resolution 1920 x 1200 @ 60 Hz
- Supports DisplayPort with max. resolution 4096 x 2304 @ 60 Hz Maximum shared memory of 512 MB Supports Intel® InTru™ 3D, Quick Sync
Video, Clear Video HD Technology, Insider™ Supports up to 3 displays
simultaneously DP 1.2 Multi-Stream Transport compliant, supports DP
1.2 monitor daisy chain up to 3 displays
I suggest temporarily taking out your two nVidia cards, plugging a monitor into the on-board HDMI port and booting with a Live USB to runs tests with Ubuntu.
It is important to know your CPU. Discover this using:
cat /proc/cpuinfo | grep 'model name'
and report back.