diff --git a/hw/xfree86/modes/xf86EdidModes.c b/hw/xfree86/modes/xf86EdidModes.c
index f15c39642..8f7d45dd6 100644
--- a/hw/xfree86/modes/xf86EdidModes.c
+++ b/hw/xfree86/modes/xf86EdidModes.c
@@ -158,6 +158,11 @@ static Bool quirk_first_detailed_preferred (int scrnIndex, xf86MonPtr DDC)
 	DDC->vendor.prod_id == 765)
 	return TRUE;
 
+    /* ACR of some sort RH #284231 */
+    if (memcmp (DDC->vendor.name, "ACR", 4) == 0 &&
+	DDC->vendor.prod_id == 2423)
+	return TRUE;
+
     return FALSE;
 }