On 03-11-17 09:59, Hans de Goede wrote:
On 01-11-17 20:34, Laura Abbott wrote:
> On 11/01/2017 11:09 AM, Hans de Goede wrote:
>> Hi All,
>> 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
>> doing this.
>> So unless there are any objections I would like to change this
>> option to 1 starting with 4.14 kernel. Is that ok ?
> I'm always a bit uneasy about enabling hardware power saving
> since it rarely seems to be done correctly but as Peter pointed
> out it's easy to revert if something goes wrong. Having the
> endorsement of upstream is also good since it means they should
> be responsive.
> Enabling for 4.14 sounds like a good plan. Did you intend for
> this to end up in stable releases on rebase?
That was my original intention yes. But now that you explicitly
ask I guess that we may want to hold off on that and just
make the change for rawhide / F28. I will try to get the
change committed to the master branch today (otherwise
I will do it Monday). I will leave it up to you if you also
make the change to the stable releases on rebase.
I see that Justin has already taken care of this while
updating to Linux v4.14-rc7-47-g3a99df9a3d14, thank you Justin.