On Wed, Nov 1, 2017 at 6:09 PM, Hans de Goede <hdegoede(a)redhat.com> wrote:
I'm working on trying to improve the OOTB power-consumption
of Fedora Workstation on laptops.
One of the easy wins here is setting snd_hda_intel.power_save=1,
which saves about 0.4W which given that modern laptops idle at
around 6-8W is a significant saving.
I've asked the upstream kernel devs if there are any downsides
to setting SND_HDA_POWER_SAVE_DEFAULT=1 and I got a reply that
this should be fine and that OpenSUSE Tumbleweed is already
So unless there are any objections I would like to change this
option to 1 starting with 4.14 kernel. Is that ok ?
None from me and easy enough to revert if it proves a problem, is
there a way to change the default at run time?