76 lines
2.2 KiB
Nix
76 lines
2.2 KiB
Nix
# A good source of information about how to fix the issues still
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# standing with kernel 4.6.11 is the following wiki page:
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# https://wiki.archlinux.org/index.php/Lenovo_ThinkPad_X1_Carbon_(Gen_6). The
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# TrackPoint and TouchPad issues there seem to have been fixed already.
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{ config, pkgs, ... }:
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{
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imports = [
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../.
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];
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# Give TLP service more control over battery
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boot = {
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extraModulePackages = with config.boot.kernelPackages; [
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acpi_call
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];
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kernelModules = [
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"acpi_call"
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];
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};
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# See https://linrunner.de/en/tlp/docs/tlp-faq.html#battery
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services.tlp.extraConfig = ''
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START_CHARGE_THRESH_BAT0=75
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STOP_CHARGE_THRESH_BAT0=80
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CPU_SCALING_GOVERNOR_ON_BAT=powersave
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ENERGY_PERF_POLICY_ON_BAT=powersave
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'';
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# Temporary fix for cpu throttling issues visible in the kernel log
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# (journalctl -k) by setting the same temperature limits used by
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# Window$
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# See https://wiki.archlinux.org/index.php/Lenovo_ThinkPad_X1_Carbon_(Gen_6)#Power_management.2FThrottling_issues
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systemd.services.cpu-throttling = {
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enable = true;
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description = "Sets the offset to 3 °C, so the new trip point is 97 °C";
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documentation = [
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"https://wiki.archlinux.org/index.php/Lenovo_ThinkPad_X1_Carbon_(Gen_6)#Power_management.2FThrottling_issues"
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];
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path = [ pkgs.msr-tools ];
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script = "wrmsr -a 0x1a2 0x3000000";
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serviceConfig = {
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Type = "oneshot";
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};
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wantedBy = [
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"timers.target"
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];
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};
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systemd.timers.cpu-throttling = {
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enable = true;
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description = "Set cpu heating limit to 97 °C";
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documentation = [
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"https://wiki.archlinux.org/index.php/Lenovo_ThinkPad_X1_Carbon_(Gen_6)#Power_management.2FThrottling_issues"
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];
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timerConfig = {
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OnActiveSec = 60;
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OnUnitActiveSec = 60;
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Unit = "cpu-throttling.service";
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};
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wantedBy = [
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"timers.target"
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];
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};
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# Enable S3 suspend state: you have to manually follow the
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# instructions shown here: https://delta-xi.net/#056 in order to
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# produce the ACPI patched table. Put the CPIO archive in /boot and
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# then enable the following lines
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# boot.kernelParams = [
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# "mem_sleep_default=deep"
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# ];
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# boot.initrd.prepend = [
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# "/boot/acpi_override"
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# ];
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}
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