For many kernel releases the ACPI backlight support has worked fine on this Sony SR19VN laptop by default. Yesterday, though, I moved from 3.2.9 to 3.4.2 and found that /sys/class/backlight was empty, so that backlight control wasn't possible. I can work around this with acpi_backlight=vendor. (Details of this laptop can be found at https://bugzilla.kernel.org/show_bug.cgi?id=13148) -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
