Commit 6fe3d788 authored by Raito Bezarius's avatar Raito Bezarius
Browse files

linux/common-config: set idle timeout to 10s for sound cards 

As per https://docs.kernel.org/sound/designs/powersave.html

We update our defaults for better power saving on laptops
which does not perform powertop --auto-tune, TLP or manual tweaking, e.g.
power-profiles-daemon.
parent dff18f99

pkgs/os-specific/linux/kernel/common-config.nix

+5 −0
Original line number Diff line number Diff line
@@ -397,6 +397,11 @@ let 
    sound = {

      SND_DYNAMIC_MINORS  = yes;

      SND_AC97_POWER_SAVE = yes; # AC97 Power-Saving Mode

      # 10s for the idle timeout, Fedora does 1, Arch does 10.

      # The kernel says we should do 10.

      # Read: https://docs.kernel.org/sound/designs/powersave.html

      SND_AC97_POWER_SAVE_DEFAULT = freeform "10";

      SND_HDA_POWER_SAVE_DEFAULT = freeform "10";

      SND_HDA_INPUT_BEEP  = yes; # Support digital beep via input layer

      SND_HDA_RECONFIG    = yes; # Support reconfiguration of jack functions

      # Support configuring jack functions via fw mechanism at boot