File optional-compmgr.diff of Package kdebase3

--- kwin/workspace.cpp
+++ kwin/workspace.cpp
@@ -58,6 +58,17 @@
 
 bool allowKompmgrRestart = TRUE;
 
+bool supportsCompMgr()
+{
+    int i;
+
+    bool damageExt = XQueryExtension(qt_xdisplay(), "DAMAGE", &i, &i, &i);
+    bool compositeExt = XQueryExtension(qt_xdisplay(), "Composite", &i, &i, &i);
+    bool xfixesExt = XQueryExtension(qt_xdisplay(), "XFIXES", &i, &i, &i);
+
+    return damageExt && compositeExt && xfixesExt;
+}
+
 // Rikkus: This class is too complex. It needs splitting further.
 // It's a nightmare to understand, especially with so few comments :(
 
@@ -197,6 +208,9 @@
     connect( kapp->desktop(), SIGNAL( resized( int )), SLOT( desktopResized()));
 #endif
 
+    if (!supportsCompMgr())
+        options->useTranslucency = false;
+
     // start kompmgr - i wanted to put this into main.cpp, but that would prevent dcop support, as long as Application was no dcop_object
     if (options->useTranslucency)
         {