Hello,
Pierre Neidhardt <ambre...@gmail.com> skribis:
> With a bit of tweaking, I figured that enabling power management on
> on "Audio codec":
>
> echo '1' > '/sys/module/snd_hda_intel/parameters/power_save';
>
> helped a little bit. But not that much. Now on 4.14.33, I get 10h,
> while on 4.16.1 I get 5h.
>
> There is something else.
That sounds worrying. Could you report it upstream?
> By the way, how do I make the above /sys/ tweak permanent on GuixSD?
You could do something like:
(simple-service 'my-/sys-tweaks activation-service-type
#~(call-with-output-file "/sys/…"
(lambda (port)
(display "1" port))))
That said, we should probably build a higher-level
‘/sys-tweaks-service-type’ where we could directly pass pairs of file
name/values.
Would you like to give it a try?
Thanks,
Ludo’.
