> we had a dedicated light sensor on the last product i worked on > (which, in retrospect, given that it had 15 watts (!) of > backlight seems like maybe the wrong place to have started trying > to save power ;-). i implemented a proof-of-concept algorithm > for automatic control, but found it a little weird -- it always > felt like there was something wrong with the backlight as it > shifted up and down in brightness, even with a fair amount of > averaging and/or delay. plus we never resolved how it should > interact with the actual brightness buttons. after all, if you > adjust manually, you're probably unhappy with the setting that > was chosen automatically. so should manual control abort any > automatic algorithm? or maybe the buttons should tune the > algorithm? how?
The ALS on the Dell Latitude notebooks have either an auto setting (activated using FN + Left Arrow) and Brightness Up and Down (FN + Up or Down). When you manually adjust the brightness it disables the ABL until you re-enable it. Peter _______________________________________________ Devel mailing list [email protected] http://lists.laptop.org/listinfo/devel
