From 8361444f9b0eb10e1595a57b69ac5fa4147b1c8b Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <eelco.dolstra@logicblox.com>
Date: Fri, 21 Jan 2011 13:38:30 +0000
Subject: [PATCH] * Disable compositing for now in the graphical installation
 CD.  It   seems to cause problems with KDE 4.5 on some graphics drivers (such
   as Cirrus and VGA in QEMU).  (NixOS/121)

svn path=/nixos/trunk/; revision=25659
---
 .../installer/cd-dvd/installation-cd-graphical.nix    | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/modules/installer/cd-dvd/installation-cd-graphical.nix b/modules/installer/cd-dvd/installation-cd-graphical.nix
index a3c533bb715..bda613a2532 100644
--- a/modules/installer/cd-dvd/installation-cd-graphical.nix
+++ b/modules/installer/cd-dvd/installation-cd-graphical.nix
@@ -1,11 +1,20 @@
 # This module defines a NixOS installation CD that contains X11 and
 # KDE 4.
 
-{config, pkgs, ...}:
+{ config, pkgs, ... }:
 
 {
   require = [
     ./installation-cd-base.nix
     ../../profiles/graphical.nix
   ];
+
+  # Disable compositing for now.  It seems to cause problems with KDE
+  # 4.5 on some graphics drivers (such as Cirrus and VGA in QEMU).
+  services.xserver.config =
+    ''
+      Section "Extensions"
+        Option "Composite" "Disable"
+      EndSection
+    '';
 }