docs: cpuFreqGovernor: explain which hardware this config affects
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# powertop will default to putting USB devices -- including HID -- to sleep after TWO SECONDS
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powerManagement.powertop.enable = false;
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# linux CPU governor: <https://www.kernel.org/doc/Documentation/cpu-freq/governors.txt>
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# - options:
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# - "powersave" => force CPU to always run at lowest supported frequency
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# - "performance" => force CPU to always run at highest frequency
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# - "ondemand" => adjust frequency based on load
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# - "conservative" (ondemand but slower to adjust)
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# - "schedutil"
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# - "userspace"
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# - not all options are available for all platforms
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# - intel (intel_pstate) appears to manage scaling w/o intervention/control from the OS.
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# - AMD (acpi-cpufreq) appears to manage scaling via the OS *or* HW. but the ondemand defaults never put it to max hardware frequency.
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# - qualcomm (cpufreq-dt) appears to manage scaling *only* via the OS. ondemand governor exercises the full range.
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# - query details with `sudo cpupower frequency-info`
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powerManagement.cpuFreqGovernor = "ondemand";
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services.logind.extraConfig = ''
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