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nixos/systemd: Add suspend-then-hibernate #58404

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nixos/systemd: Add suspend-then-hibernate #58404

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Semptic
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@Semptic Semptic commented Mar 26, 2019 •
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This is a duplicate of #53025, but also adds the according settings of sleep.conf.

Motivation for this change

This pr enables nixos to use suspend-then-hibernate.
This adds suspend-then-hibernate systemd service/target and
also adds the according settings for sleep.conf.

Things done
  • Tested using sandboxing (nix.useSandbox on NixOS, or option sandbox in nix.conf on non-NixOS)
  • 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 nix-review --run "nix-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)
  • Assured whether relevant documentation is up to date
  • Fits CONTRIBUTING.md.

Sorry, something went wrong.

@Semptic Semptic requested a review from infinisil as a code owner March 26, 2019 20:49
@GrahamcOfBorg GrahamcOfBorg added 6.topic: nixos Issues or PRs affecting NixOS modules, or package usability issues specific to NixOS 8.has: module (update) This PR changes an existing module in `nixos/` 10.rebuild-darwin: 0 This PR does not cause any packages to rebuild on Darwin 10.rebuild-linux: 1-10 labels Mar 26, 2019
@flokli
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flokli commented Mar 26, 2019

@Semptic out of interest, does hibernation work with encrypted swap devices?

@flokli flokli mentioned this pull request Mar 26, 2019
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danbst
danbst reviewed Mar 26, 2019
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nixos/modules/system/boot/systemd.nix
@@ -673,6 +675,28 @@ in
'';
};

services.sleep.hibernateDelaySec = mkOption {
default = 3600;
type = types.int;
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type = types.int;
type = with types; nullOr int;

and default = null, and appropriate config to NOT enable hibernate when hibernateDelaySec == null . It is a bad idea to enable suspend-then-hibernate for all, because not everyone has enough swap to manage hibernate.

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@Semptic Semptic Mar 27, 2019 •
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I don't know if we really need this. As I understand the docs you must call systemctl suspend-then-hibernate explicitly to get the hibernation. Suspend will still just supend and never got to hibernate.

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danbst commented Mar 26, 2019

My another objection is that services.sleep.hibernateDelaySec seems to be in wrong place, and has wrong namespace. Maybe something like powerManagement.suspendHibernateDelaySec (how to shorten this name?)

  services.sleep.extraConfig = mkIf (config,powerManagement.suspendHibernateDelaySec != null) ''
    HibernateDelaySec=${toString config.powerManagement.suspendHibernateDelaySec}
  '';

The services.sleep.extraConfig seems to be in correct place.

I look forward for this PR, as I was once interested in this feature!

nixos/systemd: Add suspend-then-hibernate
3cd3c26 
This commit enables nixos to use suspend-then-hibernate.
This adds suspend-then-hibernate systemd service/target and
also adds the according settings for sleep.conf.
@Semptic Semptic force-pushed the systemd-add-suspend-then-hibernate branch from 1774fc6 to 3cd3c26 Compare March 29, 2019 09:47
@Semptic Semptic closed this Oct 2, 2019
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flokli commented Oct 12, 2019

Is there a reason this PR was closed?

@Janik-Haag Janik-Haag added the 12. first-time contribution This PR is the author's first one; please be gentle! label Jun 12, 2023
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6.topic: nixos Issues or PRs affecting NixOS modules, or package usability issues specific to NixOS 8.has: module (update) This PR changes an existing module in `nixos/` 10.rebuild-darwin: 0 This PR does not cause any packages to rebuild on Darwin 10.rebuild-linux: 1-10 12. first-time contribution This PR is the author's first one; please be gentle!
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