--- xf86-video-nouveau/src/nv_output.c~	2008-04-02 11:59:01.000000000 +0900
+++ xf86-video-nouveau/src/nv_output.c	2008-07-06 14:37:20.000000000 +0900
@@ -762,8 +762,10 @@
 			"RRConfigureOutputProperty error, %d\n", error);
 	}
 
+	int32_t existing_dithering = (int32_t) nv_output->dithering;
+
 	error = RRChangeOutputProperty(output->randr_output, dithering_atom,
-					XA_INTEGER, 32, PropModeReplace, 1, &nv_output->dithering,
+					XA_INTEGER, 32, PropModeReplace, 1, &existing_dithering,
 					FALSE, FALSE);
 
 	if (error != 0) {