feat: Add HPET configuration from Atomic Studio

[EPOCHvoyager]

I have to preface this by stating that I do not understand the underlying mechanisms adequately myself - but after speaking to the Atomic Studio dev last month, I'm told this tweak might help those facing audio issues, particularly on constrained handhelds - and that it should have no ill effect otherwise.

Atomic Studio currently implements it here.

[EPOCHvoyager]

Do note that this is my first technical PR, and that as such this might not be the proper or preferable way of implementing this.

[HikariKnight]

@tulilirockz you might be able to give more insight in this for us as to how this works and help.

[HikariKnight]

This is not needed when you add the file in the desktop image, as the deck image is built from the desktop image and get the file through that.
If we needed the number to be different for the deck image then this file would be needed.

[EPOCHvoyager]

Alright, good to know! Sending in another commit to fix this.

[RayBa82]

Cool I could approve that, shouldn't I be a maintainer or something? :-D
But fixing audio issues is always nice :-)

[HikariKnight]

After having talked to @tulilirockz about the details of this, i don't think i will be approving this as it would increase power consumption (and the desktop image is also used on laptops) and battery drain for little to no gain for gaming audio.

They also mentioned that if this did get merged, make sure it does not get included in the -deck images.

I think this instead would make more sense as a ujust command, that way it is optional and we can also throw in a warning that it will increase power consumption.
The difference in location then is just that you write the file to /etc/sysctl.d/ instead using bash in the justfile.

[EPOCHvoyager]

Alright; with that in mind, I think it might be even better to implement as part of a ujust setup-realtime command - which could automatically layer the setup-realtime package and start the appropriate systemd services, with this little tweak as a bonus. Though with RT being merged for kernel 6.12, it could be better to wait out a bit.

[HikariKnight]

Alright; with that in mind, I think it might be even better to implement as part of a ujust setup-realtime command - which could automatically layer the setup-realtime package and start the appropriate systemd services, with this little tweak as a bonus. Though with RT being merged for kernel 6.12, it could be better to wait out a bit.

Does setup-realtime add any kernel modules? if so it cant be done on the users end.
also i think setup-realtime-audio would be more descriptive even though it would have a description.

[EPOCHvoyager]

Does setup-realtime add any kernel modules?

No - but the realtime-setup package adds a service(of two, the other is a workaround for network interrupts) that specifically supports a RHEL-RT kernel, which might become regular upstream after 6.12. It's mainly just an /etc/limits.d/ configuration file and some user group management under the hood, as far as I can tell.

also i think setup-realtime-audio would be more descriptive even though it would have a description.

It would be the main use most likely, but there are others. I think mostly sharing the name with the package could leave less guesswork to the user?

[HikariKnight]

Does setup-realtime add any kernel modules?

No - but the realtime-setup package adds a service(of two, the other is a workaround for network interrupts) that specifically supports a RHEL-RT kernel, which might become regular upstream after 6.12. It's mainly just an /etc/limits.d/ configuration file and some user group management under the hood, as far as I can tell.

also i think setup-realtime-audio would be more descriptive even though it would have a description.

It would be the main use most likely, but there are others. I think mostly sharing the name with the package could leave less guesswork to the user?

if it does more than audio then setup-realtime works better
i would say maybe wait with this until bazzite is on the 6.12 kernel?
can still prep the PR but add the note to not merge until bazzite uses the 6.12 kernel

[EPOCHvoyager]

I'll convert this PR to a draft for now.