supermair

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Massive battery life improvements on AMD over the past year in c/linux@lemmy.ml
[–] supermair@lemmy.ca 3 points 7 months ago

Good point, edited!

Massive battery life improvements on AMD over the past year in c/linux@lemmy.ml
[–] supermair@lemmy.ca 5 points 7 months ago* (last edited 7 months ago) (2 children)

PPD comes default on most distros (I can at least confirm for Debian, Ubuntu and Fedora on the GNOME variant). I am not sure about KDE variants but they should support it too even if it's not pre-installed.

You can check if it's running with the following command:

$ powerprofilesctl

However as the 0.20 release which supports p-state just released recently most fixed point release distros won't have the newer version. In this case you would need to update it manually.

I am running Debian testing and it has the new version while stable does not.

https://packages.debian.org/trixie/power-profiles-daemon

Massive battery life improvements on AMD over the past year in c/linux@lemmy.ml
[–] supermair@lemmy.ca 11 points 7 months ago

Also want to appreciate the idle efficiency improvements! My AMD laptop only loses a few % of battery life after idling overnight (with the default s2idle sleep mode). A huge improvement to my older work Intel ThinkPad which loses over 25% overnight...

Massive battery life improvements on AMD over the past year in c/linux@lemmy.ml
[–] supermair@lemmy.ca 5 points 7 months ago* (last edited 7 months ago) (1 children)

Yes, Zen 2 and above support p-states! You might need to update your bios and enable CPPC if p-state is not showing up.

You can confirm by running $ powerprofilesctl and seeing if CpuDriver is amd_pstate.

Massive battery life improvements on AMD over the past year in c/linux@lemmy.ml
[–] supermair@lemmy.ca 5 points 7 months ago

Yes. You should not use tlp anymore on any AMD processor that supports p-states. TLP does not support these and it's own logic may conflict with the CPU. Use PPD and let the processor itself take care of the optimizations!

See: https://community.frame.work/t/tracking-ppd-v-tlp-for-amd-ryzen-7040/39423

276
Massive battery life improvements on AMD over the past year (lemmy.ca)
submitted 7 months ago* (last edited 7 months ago) by supermair@lemmy.ca to c/linux@lemmy.ml
14 comments fedilink
 

AMD has been on a roll over the past year making significant strides in power management across the Linux stack.

Most of this work is centered around support for p-state.

To take advantage you should run a newer Linux kernel. Here are some of the improvements from each recent release:

Use power-profiles-daemon 0.20+ which sets the appropriate p-state driver based on the selected battery profile.

Upcoming changes:

Kudos to AMD principal engineer Mario Limonciello for driving these changes across the board!

This is one advantage of increased competition (e.g. from the Apple M series); the entire ecosystem is pushed forward.

I am personally benefiting immensely from these improvements on my new Thinkpad t14s with AMD 7840U (battery life going from 4-5 hours to easily 10+ hours).

Finally we don't have to settle anymore for underwhelming battery life on Linux laptops :)