On 28 July 2016 at 17:01, Chris Murphy <lists@xxxxxxxxxxxxxxxxx> wrote: > It may be that feature predates LED backlights, I don't know that the > power savings from a small reduction in brightness is as meaningful as > it was with CCFL. LED is more energy efficient (both when used as a TFT-style "backlight") and even more so when black pixels don't consume any power, but the panel is still usually the biggest drain of power on an idle modern laptop, which is perhaps why macOS persists. As a counter argument, every study I've ever seen people just end up setting the brightness back to the previous user-chosen value when it's changed by a large amount automatically. I tried to counter that by making small policy changes _around_ the user set value when designing the ambient light algorithm in gnome-settings-daemon. Richard. -- desktop mailing list desktop@xxxxxxxxxxxxxxxxxxxxxxx https://lists.fedoraproject.org/admin/lists/desktop@xxxxxxxxxxxxxxxxxxxxxxx
