diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index 5b32e15a65ceee63861992d51f7731a140946e3c..d0937ab3fb6d3bab5e56bd6b6d667ab1c0a6bb3f 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -464,6 +464,14 @@ static struct dmi_system_id video_dmi_table[] __initdata = {
 		DMI_MATCH(DMI_PRODUCT_NAME, "HP 1000 Notebook PC"),
 		},
 	},
+	{
+	 .callback = video_ignore_initial_backlight,
+	 .ident = "HP Pavilion m4",
+	 .matches = {
+		DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),
+		DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion m4 Notebook PC"),
+		},
+	},
 	{}
 };