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Today's X rarely requires manual configuration. X now automatically configures itself with reasonable defaults. Both GNOME and KDE provide GUI utilities for customizing settings beyond these defaults if you like.

However, sometimes you need to muck with the configuration manually, beyond what these tools allow.

Quick xorg.conf

Most systems don't ship with an X config file any more, but sometimes you need one. Here's a basic skeleton:

Section "Device"
        Identifier      "Configured Video Device"

Section "Monitor"
        Identifier      "Configured Monitor"

Section "Screen"
        Identifier      "Default Screen"
        Monitor         "Configured Monitor"
        Device          "Configured Video Device"

Configuring using xorg.conf.d (Ubuntu 10.04 and newer)

Files ending in *.conf in the /usr/lib/X11/xorg.conf.d/ directory (NOTE: will be changed to /usr/share/X11/xorg.conf.d for 10.10) are automatically loaded by X at start prior to reading the xorg.conf. These files can each contain one or more Sections in the same format used by xorg.conf.

Users can continue making custom configuration in /etc/xorg.conf as usual; the .conf snippets are mainly there for the distro or hw vendor to ship default InputClass rules and custom overrides.

Configuration Recipes

  1. Input device configuration

  2. Display resolution configuration

  3. Multihead configuration

  4. SVideo configuration

  5. HDMI configuration

  6. Ctrl-Alt-Backspace Zapping

  7. Session Startup

  8. Radeon Xpress

  9. Projectors Tips and Tricks

  10. Configuration - Configuring input devices, graphics, drivers, and more

  11. X/KernelModeSetting - Configuring and using KMS (in Karmic)

  12. X/Rootless - Running X as a user process, not as the root user

  13. X/InputCoordinateTransformation - How to set the mapping of an input device to a display through X

  14. XorgOnTheEdge - for bleeding edge packages

  15. Binary Driver Howto

  16. Hybrid Graphics Howto

Other Resources


X/Config (last edited 2014-11-10 04:57:11 by alexis-m2osw)