Linux Multiple Monitors Guide

Complete beginner-friendly guide to multiple monitor setup on Linux, covering Arch Linux, CachyOS, and other distributions including X11 and Wayland configuration, display arrangement, and multi-monitor troubleshooting.

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Table of Contents

1. X11 Multi-Monitor
2. Wayland Multi-Monitor
3. Display Arrangement
4. Troubleshooting

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X11 Multi-Monitor

xrandr

Configure displays:

# Install xrandr
sudo pacman -S xorg-xrandr

# List displays
xrandr

# Enable second monitor
xrandr --output HDMI-1 --auto --right-of eDP-1

# Mirror displays
xrandr --output HDMI-1 --same-as eDP-1

# Disable display
xrandr --output HDMI-1 --off

arandr

GUI tool:

# Install arandr
sudo pacman -S arandr

# Launch
arandr

Features:

• Visual display arrangement
• Drag and drop positioning
• Save configuration
• Easy to use

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Wayland Multi-Monitor

GNOME

Configure in GNOME:

# Open Settings
gnome-control-center display

# Or use gsettings
gsettings set org.gnome.mutter experimental-features "['scale-monitor-framebuffer']"

GUI:

1. Settings → Displays
2. Arrange displays visually
3. Set primary display
4. Apply

KDE

Configure in KDE:

# Open System Settings
systemsettings5

# Display Configuration

GUI:

1. System Settings → Display Configuration
2. Arrange displays
3. Set primary display
4. Apply

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Display Arrangement

Set Primary Display

X11:

# Set primary
xrandr --output HDMI-1 --primary

Wayland:

# GNOME
gsettings set org.gnome.mutter check-alive-timeout uint32 0

# KDE
# System Settings → Display Configuration → Set Primary

Display Rotation

Rotate display:

# X11
xrandr --output HDMI-1 --rotate left

# Or right, inverted, normal

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Troubleshooting

Display Not Detected

Check connections:

# Check displays
xrandr

# Check kernel messages
dmesg | grep -i display

Wrong Resolution

Set resolution:

# X11
xrandr --output HDMI-1 --mode 1920x1080

# List modes
xrandr

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Summary

This guide covered multiple monitor setup for Arch Linux, CachyOS, and other distributions, including X11, Wayland, and display arrangement.

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Next Steps

• Display Server Configuration - Display servers
• Graphics Drivers - GPU setup
• Desktop Environments - Desktop setup
• ArchWiki Multi-Monitor: https://wiki.archlinux.org/title/Multihead

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This guide covers Arch Linux, CachyOS, and other Linux distributions. For distribution-specific details, refer to your distribution's documentation.