[FEATURE] Support for TuneD 2.0 power settings

[Hillard28]

TuneD is a power profiles tool similar to power-profiles-daemon, which will replace the latter starting with Fedora 41. At present, tuned-ppd is a translation API layer that translates the power-profiles-daemon API to TuneD. Gnome picks this up and if tuned-ppd is installed by running sudo dnf swap power-profiles-daemon tuned-ppd then the Gnome power settings work just as they did before. This is not the case for Cosmic, but it would seem (possibly ignorantly) that a fix may just require some additional checks?

[ryanabx]

The issue here is that TuneD currently does not offer itself on the new DBus interface that Power Profiles Daemon advertises itself on: org.freedesktop.UPower.PowerProfiles. It still uses the old interface, which I forget the exact name is something like net.hadess.PowerProfiles.

See this upstream PR: redhat-performance/tuned#684

Question @WatchMkr , would it be helpful to have an upstream or other-project or similar tag that could be used when an issue is partially affected by another project?

Adding on to the idea, that could be helpful when, for example, someone has an issue that is caused by distro-specific packaging.

[Hillard28]

Good point. Yeah, looks like the ppd policy still uses hadess. If I understand correctly (which is unlikely) if tuned switches to the new interface, will it "just work"? Don't see any point in adding support for hadess.

[mmstick]

system76-power supports net.hadess.PowerProfiles and org.freedesktop.UPower.PowerProfiles, so that can be installed as a drop-in replacement. Not sure if it's worth supporting net.hadess.PowerProfiles here.

[Hillard28]

I'll probably just switch to system76-power then. I just figured it was worth calling out since I believe tuned is now the standard on fedora 41. That said, I know pop! is the priority here!

[ryanabx]

I'll probably just switch to system76-power then. I just figured it was worth calling out since I believe tuned is now the standard on fedora 41. That said, I know pop! is the priority here!

No worries, we were just talking about it in the Fedora COSMIC sig group. I think tuned will end up supporting org.freedesktop.UPower.PowerProfiles before Fedora 41, so we will be all good. That said, upstream uses system76-power primarily, so nothing can go wrong from using what is supported in Pop!_OS

[Hillard28]

Looks like Fedora 41 has migrated to TuneD proper and power settings appear to be working! Guess this can be closed unless there's a reason to leave it open.