Displaylink: Difference between revisions

← Older edit

VisualWikitext

@@ Line 12: / Line 12: @@
 </syntaxhighlight>Then add the videoDrivers:<syntaxhighlight lang="nixos">services.xserver.videoDrivers = [ "displaylink" "modesetting" ];</syntaxhighlight>The module <code>nixos/modules/hardware/video/displaylink.nix</code> should also work for wlroots compositors.
-At last - at least on Gnome using wayland you also have to enable ` dml`  service<syntaxhighlight lang="nix">
+====<big>Xserver</big>====
-systemd.services.dlm.wantedBy = [ "multi-user.target" ];
+=====Connecting a second external monitor=====
-</syntaxhighlight>
-====Connecting a second external monitor====
 In order to add a second external monitor you can add the following to your configuration:
@@ Line 22: / Line 19: @@
      ${lib.getBin pkgs.xorg.xrandr}/bin/xrandr --setprovideroutputsource 2 0
 '';</syntaxhighlight>
+[[Category:Video]]
+====Wayland====
+At first add displayLink driver to nix store as above described.
+=====evdi module=====
+You probably will need the `evdi` module
+{{bc|<nowiki>
+boot = {
+  extraModulePackages = [ config.boot.kernelPackages.evdi ];
+  initrd = {
+    # List of modules that are always loaded by the initrd.
+    kernelModules = [
+      "evdi"
+    ];
+  };
+};
+</nowiki>}}
+====='''Gnome Wayland'''=====
+Install displayLink package
+{{bc|<nowiki>
+environment.systemPackages = with pkgs; [
+  displaylink
+];
+</nowiki>}}
+Define videoDrivers
+{{bc|<nowiki>
+services.xserver.videoDrivers = [ "displaylink" ];
+</nowiki>}}
+Add dlm service
+{{bc|<nowiki>
+systemd.services.dlm.wantedBy = [ "multi-user.target" ];
+</nowiki>}}
+====='''KDE Plasma'''=====
+Apparently KDE Plasma (Wayland) requires a slight different approach.
+Esnure you properly enabled wayland session
+{{bc|<nowiki>
+environment.variables = {
+  KWIN_DRM_PREFER_COLOR_DEPTH = "24";
+};
+services = {
+  desktopManager.plasma6 = {
+    enable = true;
+  };
+  displayManager = {
+    sddm = {
+      enable = true;
+      wayland.enable = true;
+    };
+    defaultSession = "plasma";
+  };
+};
+</nowiki>}}
+Install displayLink package
+{{bc|<nowiki>
+environment.systemPackages = with pkgs; [
+  displaylink
+];
+</nowiki>}}
+Instead of dlm setup display-link server as follows:
+{{bc|<nowiki>
+# --- THIS IS THE CRUCIAL PART FOR ENABLING THE SERVICE ---
+systemd.services.displaylink-server = {
+  enable = true;
+  # Ensure it starts after udev has done its work
+  requires = [ "systemd-udevd.service" ];
+  after = [ "systemd-udevd.service" ];
+  wantedBy = [ "multi-user.target" ]; # Start at boot
+  # *** THIS IS THE CRITICAL 'serviceConfig' BLOCK ***
+  serviceConfig = {
+    Type = "simple"; # Or "forking" if it forks (simple is common for daemons)
+    # The ExecStart path points to the DisplayLinkManager binary provided by the package
+    ExecStart = "${pkgs.displaylink}/bin/DisplayLinkManager";
+    # User and Group to run the service as (root is common for this type of daemon)
+    User = "root";
+    Group = "root";
+    # Environment variables that the service itself might need
+    # Environment = [ "DISPLAY=:0" ]; # Might be needed in some cases, but generally not for this
+    Restart = "on-failure";
+    RestartSec = 5; # Wait 5 seconds before restarting
+  };
+};
+</nowiki>}}
 ==Sway==