Thanks for your reply Erich Dollansky-2, #kldload acpi_call #acpi_call -p '\VBRC' -i 8 Unknown object type '-1515870811' -- View this message in context: http://freebsd.1045724.n5.nabble.com/Lenovo-Y570-backlight-tp5726207p5726236.html Sent from the freebsd-x11 mailing list archive at Nabble.com.