On Mon, Sep 15, 2025 at 3:15 AM Max Nikulin <[email protected]> wrote:

> On 15/09/2025 04:36, Jeffrey Walton wrote:
> > If you choose UEFI, then disable Systemd power state functions.
> [...]
> > If you choose Systemd, then go to your BIOS/UEFI setup, and disable
> > S3, S4 and S5 power states. Those power states are sleep, suspend and
> > hibernate. Systemd will now control them.
>
> Jeffrey, do you have a link explaining it with more details? I expected
> some kind of cooperation of machine firmware and systemd in respect to
> power management.
>

No, sorry. It is based on my experience using SSH to access machines
remotely. Or more correctly, not being able to SSH into a machine that went
to sleep.


> I assumed that disabling power states in UEFI setup may make them
> unavailable for OS.
>

Jeff

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