Revert part of previous patch

Checking only the visible resolution and colorspace isn't enough to call
two modes equal, otherwise it is not possible to change the refresh rate
anymore.

src/add-ons/accelerants/intel_extreme/mode.cpp

@@ -789,12 +789,9 @@ intel_set_display_mode(display_mode* mode)
 	uint32 colorMode, bytesPerRow, bitsPerPixel;
 	get_color_space_format(target, colorMode, bytesPerRow, bitsPerPixel);
 
-	// avoid screen being off when switching workspaces when they have the same
-	// resolution.
-	if (target.virtual_width == display_mode_hook.mode.width
-		&& target.virtual_height == display_mode_hook.mode.height
-		&& target.space == display_mode_hook.mode.space)
-		return B_OK;
+	// TODO stop here, when the requested mode is the same as the current one.
+	// This would avoid screen flickering when setting a mode that's already in
+	// place.
 
 #if 0
 static bool first = tru;