On Thu 2016-11-24 16:36:51, Pali Rohár wrote: > On Thursday 24 November 2016 16:32:06 Jacek Anaszewski wrote: > > Since it has been reported that POLLPRI notifications on brightness > > file can lead to increased power consumption, and having my above > > statement I don't think that it is a good idea to use brightness > > file for this. > > How is brightness file different from others that it cannot issue > POLLPRI notification?
Reading "brightness" may or may not give you current brightness of the
led, depending on hardware limitations -- and you can't know. (It may
give you maximum brightness of trigger)
Reading "hw_current_brightness" file (if present) will give you
current brightness. In addition, it is pollable.
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures)
http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
signature.asc
Description: Digital signature
------------------------------------------------------------------------------
_______________________________________________ ibm-acpi-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/ibm-acpi-devel
