• Anything here expects Xorg and not Wayland
• Identifier will need changed for different display connections and drivers

• 99-graphics.conf

sudo mkdir -p '/etc/X11/xorg.conf.d' && sudo -e '/etc/X11/xorg.conf.d/99-graphics.conf'

• See Acer S271HL

• Last updated: 2022/05/18
• The Identifier expects modesetting
• It's better to use a kernel option as it applies to both Wayland and Xorg

sudo mkdir -p '/etc/X11/xorg.conf.d' && sudo -e '/etc/X11/xorg.conf.d/99-graphics.conf'

Section "Monitor"
    Identifier "HDMI-1"
    Modeline "1920x1080_75"  167.85  1920 1928 1960 2000  1080 1105 1113 1119 +hsync -vsync
    Option "PreferredMode" "1920x1080_75"
EndSection

• https://blogshit.baka.fi/2020/07/xorg-custom-resolutions/
• https://download.nvidia.com/XFree86/Linux-x86_64/510.54/README/xconfigoptions.html

Section "Monitor"
    Identifier "S271HL-75Hz"
    Modeline "1920x1080_75"  167.85  1920 1928 1960 2000  1080 1105 1113 1119 +hsync -vsync
EndSection

Section "Screen"
    Identifier "Screen0"
    Option "ModeValidation" "HDMI-0: NoMaxPClkCheck,NoEdidMaxPClkCheck,NoHorizSyncCheck,NoVertRefreshCheck,AllowNonEdidModes"
    Monitor "S271HL-75Hz"
EndSection

• https://wiki.gentoo.org/wiki/30bpp
• https://wiki.archlinux.org/title/AMDGPU#10-bit_color
• The lack-of quotes around 30 is intentional and required syntax
• This may cause apps to crash

sudo -e '/etc/X11/xorg.conf.d/99-graphics.conf'

Section "Screen"
    Identifier "Deep Color Screen"
    DefaultDepth 30
EndSection

• This may need changed to 1 instead for some distros

cat ~/'.local/share/xorg/Xorg.0.log' | grep 'Pixel depth'

cat ~/'.local/share/xorg/Xorg.0.log.old' | grep 'Pixel depth'

• https://wiki.archlinux.org/title/AMDGPU#Reduce_output_latency

sudo -e '/etc/X11/xorg.conf.d/99-graphics.conf'

Section "OutputClass"
    Identifier "AMD Graphics"
    MatchDriver "amdgpu"
    Driver "amdgpu"
    Option "EnablePageFlip" "0"
    Option "TearFree" "0"
EndSection

• 2023/03/28: Last tested on Fedora 37 with a RX 6600 XT

sudo -e '/etc/X11/xorg.conf.d/99-graphics.conf'

Section "OutputClass"
    Identifier "AMD Graphics"
    MatchDriver "amdgpu"
    Driver "amdgpu"
    Option "TearFree" "1"
EndSection

• 2024/05/02: Last tested on Fedora Workstation 40 with Intel UHD 630

sudo -e '/etc/X11/xorg.conf.d/99-graphics.conf'

Section "OutputClass"
    Identifier "Intel Graphics"
    MatchDriver "i915"
    Driver "intel"
    Option "DRI" "iris"
    Option "AccelMethod" "sna"
    Option "TearFree" "0"
EndSection

• Coolbits at 28 unlocks all available overclocking settings

sudo -e '/etc/X11/xorg.conf.d/nvidia.conf'

Section "OutputClass"
    Identifier "nvidia"
    MatchDriver "nvidia-drm"
    Option "Coolbits" "28"
    Option "AllowUnofficialGLXProtocol" "1"
EndSection

Section "InputClass"
    Identifier "evdev pointer catchall"
    MatchIsPointer "on"
    MatchDevicePath "/dev/input/event*"
    Driver "evdev"
    Option "AccelerationProfile" "-1"
    Option "AccelerationScheme" "none"
EndSection

Section "InputClass"
    Identifier "evdev keyboard catchall"
    MatchIsKeyboard "on"
    MatchDevicePath "/dev/input/event*"
    Driver "evdev"
    Option "AccelerationProfile" "-1"
    Option "AccelerationScheme" "none"
EndSection

Section "InputClass"
    Identifier "evdev touchpad catchall"
    MatchIsTouchpad "on"
    MatchDevicePath "/dev/input/event*"
    Driver "evdev"
    Option "AccelerationProfile" "-1"
    Option "AccelerationScheme" "none"
EndSection

Section "InputClass"
    Identifier "evdev tablet catchall"
    MatchIsTablet "on"
    MatchDevicePath "/dev/input/event*"
    Driver "evdev"
    Option "AccelerationProfile" "-1"
    Option "AccelerationScheme" "none"
EndSection

Section "InputClass"
    Identifier "evdev touchscreen catchall"
    MatchIsTouchscreen "on"
    MatchDevicePath "/dev/input/event*"
    Driver "evdev"
    Option "AccelerationProfile" "-1"
    Option "AccelerationScheme" "none"
EndSection