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

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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.
This commit is contained in:
Raito Bezarius 2024-03-18 00:51:32 -07:00
parent dff18f9926
commit 6fe3d788c8
1 changed files with 5 additions and 0 deletions
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5
pkgs/os-specific/linux/kernel/common-config.nix
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@ -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