52 lines
2.7 KiB
Nix
52 lines
2.7 KiB
Nix
{
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config,
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lib,
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pkgs,
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...
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}:
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{
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imports = [ ];
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environment.systemPackages = with pkgs; [
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powertop
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];
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# amdgpu.abmlevel=3 :: Automatically reduce screen brightness but tweak colors to compensate for power reduction.
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# pcie_aspm=force pcie_aspm.policy=powersupersave :: Enable PCIe active state power management for power reduction.
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# nowatchdog :: Disable watchdog for power savings (related to disable_sp5100_watchdog above).
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# amd_pstate=passive :: Fully automated hardware pstate control.
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# amd_pstate=active :: Same as passive except we can set the energy performance preference (EPP) to suggest how much we prefer performance or energy efficiency.
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# amd_pstate=guided :: Same as passive except we can set upper and lower frequency bounds.
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# amdgpu.dcdebugmask=0x10 :: Allegedly disables Panel Replay from https://community.frame.work/t/tracking-freezing-arch-linux-amd/39495/32
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boot.kernelParams = [
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"amdgpu.abmlevel=3"
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"pcie_aspm=force"
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"pcie_aspm.policy=powersupersave"
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"nowatchdog"
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# I don't see a measurable benefit from these two:
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# "cpufreq.default_governor=powersave"
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# "initcall_blacklist=cpufreq_gov_userspace_init"
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];
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systemd.tmpfiles.rules = [
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"w- /sys/firmware/acpi/platform_profile - - - - low-power"
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"w- /sys/devices/system/cpu/cpufreq/policy0/energy_performance_preference - - - - power"
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"w- /sys/devices/system/cpu/cpufreq/policy1/energy_performance_preference - - - - power"
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"w- /sys/devices/system/cpu/cpufreq/policy2/energy_performance_preference - - - - power"
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"w- /sys/devices/system/cpu/cpufreq/policy3/energy_performance_preference - - - - power"
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"w- /sys/devices/system/cpu/cpufreq/policy4/energy_performance_preference - - - - power"
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"w- /sys/devices/system/cpu/cpufreq/policy5/energy_performance_preference - - - - power"
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"w- /sys/devices/system/cpu/cpufreq/policy6/energy_performance_preference - - - - power"
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"w- /sys/devices/system/cpu/cpufreq/policy7/energy_performance_preference - - - - power"
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"w- /sys/devices/system/cpu/cpufreq/policy8/energy_performance_preference - - - - power"
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"w- /sys/devices/system/cpu/cpufreq/policy9/energy_performance_preference - - - - power"
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"w- /sys/devices/system/cpu/cpufreq/policy10/energy_performance_preference - - - - power"
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"w- /sys/devices/system/cpu/cpufreq/policy11/energy_performance_preference - - - - power"
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"w- /sys/devices/system/cpu/cpufreq/policy12/energy_performance_preference - - - - power"
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"w- /sys/devices/system/cpu/cpufreq/policy13/energy_performance_preference - - - - power"
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"w- /sys/devices/system/cpu/cpufreq/policy14/energy_performance_preference - - - - power"
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"w- /sys/devices/system/cpu/cpufreq/policy15/energy_performance_preference - - - - power"
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];
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}
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