--- linux-ubuntu-modules-2.6.22-2.6.22/ubuntu/acpi/sony_acpi.c	2007-01-10 15:57:02.000000000 +0100
+++ linux-ubuntu-modules-2.6.22-2.6.22-patched/ubuntu/acpi/sony_acpi.c	2007-05-28 12:40:37.000000000 +0200
@@ -75,7 +75,7 @@
 		.name		= "brightness",
 		.acpiget	= "GBRT",
 		.acpiset	= "SBRT",
-		.min		= 1,
+		.min		= 0,
 		.max		= 8,
 		.debug		= 0,
 	},
@@ -83,7 +83,7 @@
 		.name		= "brightness_default",
 		.acpiget	= "GPBR",
 		.acpiset	= "SPBR",
-		.min		= 1,
+		.min		= 0,
 		.max		= 8,
 		.debug		= 0,
 	},