On Thu, Nov 7, 2013 at 4:47 PM, Lennart Poettering <mzerqung@0pointer.de> wrote:
On Wed, 06.11.13 16:01, Bill Nottingham (notting@redhat.com) wrote:

> Elad Alfassa (elad@fedoraproject.org) said:
> > It'd be awesome if we could make sure default Fedora Workstation will have
> > "laptop mode" on by default.
> > Right now I need to run a script that changes many power tunables (got the
> > list from powertop) to save battery on my laptop. It should be default.
> > Perhaps detect if the machine is on-battery and if so enable all power
> > saving features (disable watchdog, increase the
> > vm_dirty_writeback_centisecs value, and so on)?
> > Can this be part of upower? Can we have a setting in Settings for that?
> > (Something like "Enable power saving when on battery (decreases
> > performance)"?
>
> Isn't this the sort of thing that should ship by default? (Whether in a
> tuned profile or something else.)

The last time I discussed this with Matthew Garrett we came to the
conclusion that this isn't something we want for the general case. Best
is to ping him about this.

I am pretty sure that "tuned" is nothing we ever want to ship by
default. To "tune" something is the opposite of having good defaults. We
want good defaults, no tuning.

Lennart

--
Lennart Poettering, Red Hat


What about automatically changing the cpu-governor to powersave when battery is under certain % and the device is unplugged, and then bringing it back to ondemand when plugging the machine back in?

--
-Elad Alfassa.