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nixos/powertop: wait for hardware to initialize #77364

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merged 1 commit into from Jan 10, 2020
Merged

nixos/powertop: wait for hardware to initialize #77364

merged 1 commit into from Jan 10, 2020

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meatcar
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@meatcar meatcar commented Jan 9, 2020

Motivation for this change

We should wait until after multi-user.target is triggered to allow hardware to finish initializing, such as network devices and USB drives. This ensures powertop --auto-tune sets more tunables to "Good".

Fixes #66820

I am following nixos/tlp in implementation, since the functionality is related.

Things done
  • Tested using sandboxing (nix.useSandbox on NixOS, or option sandbox in nix.conf on non-NixOS linux)
  • Built on platform(s)
    • NixOS
    • macOS
    • other Linux distributions
  • Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)
  • Tested compilation of all pkgs that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review wip"
  • Tested execution of all binary files (usually in ./result/bin/)
  • Determined the impact on package closure size (by running nix path-info -S before and after)
  • Ensured that relevant documentation is up to date
  • Fits CONTRIBUTING.md.
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cc @Mic92

@meatcar
nixos/powertop: wait for hardware to initialize
90b6823 
We should wait until after `multi-user.target` is triggered to allow
hardware to finish initializing, such as network devices and USB drives.
This ensures `powertop --auto-tune` sets more tunables to "Good".

Fixes NixOS#66820
@Mic92 Mic92 merged commit a69d3f3 into NixOS:master Jan 10, 2020
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Mic92 commented Jan 10, 2020

Also backported to 19.09: b9d8057

@meatcar meatcar deleted the nixos-powertop-delay branch January 10, 2020 15:30
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@teto teto teto approved these changes

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PowerTop service does not work unless restarted
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@meatcar @Mic92 @teto @Janik-Haag