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Wake on LAN requires working suspend, I believe. That's not working, because alas many desktops and workstations don't suspend well these days.

Wake on LAN is my ideal yes & would be perfect for this application. If only suspend werent broken. It's fantastically easy to setup in systems-networkd, a one line WakeOnLan=magic in your .link file. Easy as that for my laptop! https://wiki.archlinux.org/title/Wake-on-LAN#systemd.link

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Depends on the board, I've had many mobos which power on when they receive WoL.

Check your bios settings.

Also, you can probably just strap a wifi-capable relay to power pins on your motherboard.

> Also, you can probably just strap a wifi-capable relay to power pins on your motherboard.

That's a lot more work than just buying a different KVM that already exposes its spare GPIO pins for exactly that purpose. There are plenty of options that come bundled with the necessary cables and adapters to connect the KVM to the motherboard headers while leaving the existing power/reset buttons usable.

Wake on LAN should work from S5 (off), as long as you leave the power supply switched on; but the EU ErP very low standby power setting usually needs to be off.

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