Xorg: Difference between revisions

← Older edit

VisualWikitext

@@ Line 1: / Line 1: @@
+[https://en.wikipedia.org/wiki/X.Org_Server Xorg] is the implementation of the [https://en.wikipedia.org/wiki/X_Window_System X Window System]. It acts as the bridge between your system's hardware and the graphical user environment enabling a variety of [[:Category:Desktop environment|desktop environments]] and [[:Category:Window managers|window managers]].
+= Enabling =
+On NixOS, users can enable and configure Xorg through the {{nixos:option|services.xserver}} module in their system configuration.
+See {{NixOS Manual|name=NixOS Manual: Chapter - X Window System|anchor=#sec-x11}} for information on using X11 with NixOS.
+= Tips and tricks =
 == HiDPI ==
@@ Line 5: / Line 15: @@
 Not all software behaves well in high-resolution mode yet. Here are listed most common tweaks which make work on a HiDPI screen more pleasant:
-<pre>
+<syntaxhighlight lang="nix">
-  # bigger tty fonts
+# bigger tty fonts
-  console.font =
+console.font =
-    "${pkgs.terminus_font}/share/consolefonts/ter-u28n.psf.gz";
+  "${pkgs.terminus_font}/share/consolefonts/ter-u28n.psf.gz";
-  services.xserver.dpi = 180;
+services.xserver.dpi = 180;
-  environment.variables = {
+environment.variables = {
-    GDK_SCALE = "2";
+  ## Used by GTK 3
-    GDK_DPI_SCALE = "0.5";
+  # `GDK_SCALE` is limited to integer values
-    _JAVA_OPTIONS = "-Dsun.java2d.uiScale=2";
+  GDK_SCALE = "2";
+  # Inverse of GDK_SCALE
+  GDK_DPI_SCALE = "0.5";
+  # Used by Qt 5
+  QT_AUTO_SCREEN_SCALE_FACTOR = "1";
+  _JAVA_OPTIONS = "-Dsun.java2d.uiScale=2";
+};
+# Expose variables to graphical systemd user services
+services.xserver.displayManager.importedVariables = [
+  "GDK_SCALE"
+  "GDK_DPI_SCALE"
+  "QT_AUTO_SCREEN_SCALE_FACTOR"
+];
+</syntaxhighlight>
+To enable HiDPI scaling for Qt 6 applications, add the following to <code>.Xresources</code>:
+<syntaxhighlight>
+Xft.dpi: 180
+</syntaxhighlight>
+== Disabling touchpad and mouse accelerations ==
+To disable touchpad and mouse accelerations just add the following lines to your <code>configuration.nix</code>
+<syntaxhighlight lang="nix">
+services.xserver = {
+  enable = true;
+  ...
+  libinput = {
+    enable = true;
+    # disabling mouse acceleration
+    mouse = {
+      accelProfile = "flat";
+    };
+    # disabling touchpad acceleration
+    touchpad = {
+      accelProfile = "flat";
+    };
    };
-</pre>
-In NixOS unstable (but not in NixOS 20.03) there is also a dedicated [https://github.com/NixOS/nixpkgs/blob/master/nixos/modules/hardware/video/hidpi.nix HiDPI module]:
-<pre>
+   ...
-{
-   hardware.video.hidpi.enable = true;
-}
-</pre>
-This option will be included by default when using <code>nixos-config-generate</code> and it detects a screen larger than
+};
-fullhd. This will only set linux console fonts xserver dpi settings and environment variables still needs to be applied manually.
+</syntaxhighlight>
-== Disabling mouse acceleration ==
+To get more information see <code>man configuration.nix</code>.
-To disable mouse acceleration for a touchpad, it's as simple as
-<pre>
+== Exclude packages ==
-  services.xserver.libinput.enable = true;
-  services.xserver.libinput.accelProfile = "flat";
-</pre>
-But to disable it for a mouse, it's a bit more wordy -
+Some packages like xterm are included when enabling Xorg. To exclude packages, edit the <code>configuration.nix</code> as the example, but be sure to have another terminal enabled in your build before doing this.
-<pre>
+<syntaxhighlight lang="nix">
-  services.xserver.libinput.enable = true;
+services.xserver.excludePackages = with pkgs; [
-   services.xserver.config = ''
+   xterm
-    Section "InputClass"
+];
-      Identifier "mouse accel"
+</syntaxhighlight>
-      Driver "libinput"
-      MatchIsPointer "on"
-      Option "AccelProfile" "flat"
-      Option "AccelSpeed" "0"
-    EndSection
-  '';
-</pre>
-== See also ==
+= See also =
+* [[Wayland]]
 * [[Nvidia]]
-* [[Amd Gpu]]
+* [[AMD GPU]]
 * [[Intel Graphics]]
+* [[:Category:Desktop environment]]
+* [[:Category:Window managers]]
+[[Category:Video]]