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nixos-hardware/lenovo/thinkpad/x1/6th-gen/default.nix
Benjamin Hipple bd1ef85b98 lenovo x1 carbon gen6: update S3 suspend
With UEFI >= 1.30, there's an explicit option to enable S3 power management.
Once this is selected, S3 is enabled and "deep" is selected as the default
/sys/power/mem_sleep value without requiring any kernel boot parameters.
2018-12-27 18:40:08 -05:00

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# A good source of information about how to fix the issues still
# standing with kernel 4.6.11 is the following wiki page:
# https://wiki.archlinux.org/index.php/Lenovo_ThinkPad_X1_Carbon_(Gen_6). The
# TrackPoint and TouchPad issues there seem to have been fixed already.
#
# Enable the lower-power S3 suspend state by upgrading the BIOS to version >= 1.30,
# then manually selecting Linux in the power management section.
{ config, pkgs, ... }:
{
imports = [
../.
../../../../common/pc/laptop/acpi_call.nix
../../../../common/pc/laptop/cpu-throttling-bug.nix
];
# See https://linrunner.de/en/tlp/docs/tlp-faq.html#battery
services.tlp.extraConfig = ''
START_CHARGE_THRESH_BAT0=75
STOP_CHARGE_THRESH_BAT0=80
CPU_SCALING_GOVERNOR_ON_BAT=powersave
ENERGY_PERF_POLICY_ON_BAT=powersave
'';
}