diff --git a/src/radeon_modes.c b/src/radeon_modes.c
index ec60cc9..2cb430c 100644
--- a/src/radeon_modes.c
+++ b/src/radeon_modes.c
@@ -418,6 +418,7 @@ RADEONUpdatePanelSize(xf86OutputPtr output)
 static void
 radeon_add_common_modes(xf86OutputPtr output, DisplayModePtr modes)
 {
+    RADEONInfoPtr  info       = RADEONPTR(output->scrn);
     RADEONOutputPrivatePtr radeon_output = output->driver_private;
     radeon_native_mode_ptr native_mode = &radeon_output->native_mode;
     DisplayModePtr  last       = NULL;
@@ -439,9 +440,14 @@ radeon_add_common_modes(xf86OutputPtr output, DisplayModePtr modes)
 	     * need the internal RMX unit in the video chips (and there is
 	     * only one per card), this will only apply to the primary head.
 	     */
-	    if (widths[i] < 320 || widths[i] > native_mode->PanelXRes ||
-		heights[i] < 200 || heights[i] > native_mode->PanelYRes)
-		continue;
+	    if (IS_AVIVO_VARIANT) {
+		if (widths[i] < 320 || heights[i] < 200)
+		    continue;
+	    } else {
+		if (widths[i] < 320 || widths[i] > native_mode->PanelXRes ||
+		    heights[i] < 200 || heights[i] > native_mode->PanelYRes)
+		    continue;
+	    }
 	}
 
 	new = xf86CVTMode(widths[i], heights[i], 60.0, FALSE, FALSE);
diff --git a/src/radeon_output.c b/src/radeon_output.c
index 6e00ab8..b623ae6 100644
--- a/src/radeon_output.c
+++ b/src/radeon_output.c
@@ -500,9 +500,11 @@ radeon_mode_valid(xf86OutputPtr output, DisplayModePtr pMode)
 		pMode->VDisplay != native_mode->PanelYRes)
 		return MODE_PANEL;
 	}
-	if (pMode->HDisplay > native_mode->PanelXRes ||
-	    pMode->VDisplay > native_mode->PanelYRes)
-	    return MODE_PANEL;
+	if (!IS_AVIVO_VARIANT) {
+	    if (pMode->HDisplay > native_mode->PanelXRes ||
+		pMode->VDisplay > native_mode->PanelYRes)
+		return MODE_PANEL;
+	}
     }
 
     return MODE_OK;