Only 640x480 is set as the preferred mode when the TV format is NTSC,PAL, 480p
---
 drivers/gpu/drm/i915/intel_tv.c |    8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

Index: linux-2.6/drivers/gpu/drm/i915/intel_tv.c
===================================================================
--- linux-2.6.orig/drivers/gpu/drm/i915/intel_tv.c	2009-11-24 10:19:48.000000000 +0800
+++ linux-2.6/drivers/gpu/drm/i915/intel_tv.c	2009-11-24 14:51:13.000000000 +0800
@@ -1531,9 +1531,11 @@
 	struct intel_output *intel_output = to_intel_output(connector);
 	const struct tv_mode *tv_mode = intel_tv_mode_find(intel_output);
 
-	if (tv_mode->nbr_end < 480 && mode_ptr->vdisplay == 480)
-		mode_ptr->type |= DRM_MODE_TYPE_PREFERRED;
-	else if (tv_mode->nbr_end > 480) {
+	if (tv_mode->nbr_end < 480) {
+		/* Only the 640x480 is set as the preferred mode */
+		if (mode_ptr->vdisplay == 480 && mode_ptr->hdisplay == 640)
+			mode_ptr->type |= DRM_MODE_TYPE_PREFERRED;
+	} else if (tv_mode->nbr_end > 480) {
 		if (tv_mode->progressive == true && tv_mode->nbr_end < 720) {
 			if (mode_ptr->vdisplay == 720)
 				mode_ptr->type |= DRM_MODE_TYPE_PREFERRED;