On Fri, 2009-01-09 at 09:18 +0800, Matthew Garrett wrote: > On Fri, Jan 09, 2009 at 09:13:38AM +0800, Zhang Rui wrote: > > > > > _BQC returns 3 when the actual backlight level is 0x50. > > We only know that the value returned by _BQC is invalid but we never > > know the value is an index until we see the _AML code. > > If the value returned is less than the smallest value in the _BLC block, > then it's an index. This heuristic will never break a standards > compliant system, but (to the best of my knowledge) will work with any > of these systems that we're currently aware of. > well, this does work, but a little bit ugly... The ACPI backlight control on boxes with such _BCL/_BCM/_BQC methods implemented surely doesn't work before. so IMO disabling it again is not that bad. :) thanks, rui -- 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
