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#1 2019-05-02 13:36:31

reikdas
Member
Registered: 2019-01-11
Posts: 18

Power management tools comparison

Are there any posts comparing the pros and cons of the power management tool alternatives to TLP - acpid, laptop-mode-tools, powertop and systemd power management? I am trying to decide which one to use.

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#2 2019-05-02 14:19:14

V1del
Forum Moderator
Registered: 2012-10-16
Posts: 21,425

Re: Power management tools comparison

They all ultimately adjust the same kernel knobs. There shouldn't™ be any difference. Differences may arise when the kernel updates and adds new functionality and whether any given implementation incooperates the relevant kernel changes fast enough (in which case, any given interesting change could be done manually as well until whatever tool of choice catches up).

FWIW TLP is very active in that regard, the dev does use (or at least cares about) Arch and frequents the boards. Laptop-mode-tools was stale for a while but development has seemingly picked up again.

powertop and acpid might have a more hands on approach and overall expose less knobs than laptop-mode-tools or TLP. systemd's power management features have very little overlap with the other options (other than maybe acpid) they concern behaviour on lid close events and similar, which are actions that the other options do not influence.

Again, in practice they all simply toggle certain kernel features, so it's often more dependant on the kernel whether you can really benefit from any given improvements (or see stability issues due to buggy options/drivers/hardware). You could also set up your own udev rules, if you really want to know what's going on.

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