Index: code/unix/sdl_glimp.c
===================================================================
--- code/unix/sdl_glimp.c	(revision 821)
+++ code/unix/sdl_glimp.c	(working copy)
@@ -440,11 +440,21 @@
 {
 	Uint16 table[3][256];
 	int i, j;
-//	float g;
 
 	if(r_ignorehwgamma->integer)
 		return;
 
+	if(!glConfig.isFullscreen)
+	{
+		float g;
+
+        	// if fullscreen is on, gamma ramps make no visual difference anyways with overbrightbits
+		// set to 0.
+		
+		g  = Cvar_Get("r_gamma", "1.0", 0)->value;
+		SDL_SetGamma(g, g, g);
+	}
+
 	// taken from win_gamma.c:
 	for (i = 0; i < 256; i++)
 	{
@@ -464,9 +474,6 @@
 	}
 
 	SDL_SetGammaRamp(table[0], table[1], table[2]);
-
-//	g  = Cvar_Get("r_gamma", "1.0", 0)->value;
-//	SDL_SetGamma(g, g, g);
 }
 
 /*