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Comment by gcblkjaidfj | Hacker News Reader

> Suspend / resume No The firmware does not support ACPI S3 suspend.

Lol at the state of hardware.

for real! some later versions of the X1C have had S3 patched in but when the X1C6 was first released this was a surprise to me. Apparently Windows is moving towards S1-only and that gets reflected in firmwares originally designed for windows computers.

For the uninitiated, without S3 closing the laptop lid will either continue to drain battery pretty damned quickly (S1) OR cause the OS to take much longer to resume completely from disk (S4 aka hibernate). As SSDs get bigger/faster/cheaper in comparison to RAM, S4 will start to seem more equivalent, but to make this sensible on an ultrabook you might want to opt for that 1+TB NVME so you can hibernate on lid-shut without eating a significant fraction of your disk on swap.

The requirement for certification with S1 aka Modern Standby btw requires that proper S1 implementation draws same or less power than S3, iirc.

But that requires pretty heavy power saving code

Note for this laptop, specifically, it maxes out at 16GB RAM, and it's soldered, so that is a hard cap. That'd take a 256GB SSD down to 240GB after swap. I don't think it's a big concern for this machine, though certainly could be for some mobile workstation with much more RAM.

16 GB of RAM seems fine even on a 256 GB disk.

(It's plenty at that point, but hardly seems to be the yes/no on the whole deal)

kidding aside, I'm opinionated: if it doesn't suspend/resume, it's not a laptop.

There's the opposite. If it doesn't disable suspend, it is not a work computer.

my work macbook will close all the network connections/compile/rendering when i close the lid to walk from meeting to meeting (or used to. seems like the universe closed this bug as 'WONT FIX')

I have no decent UX to disable that when i need my network connections/compile time/render time/etc... It's either sleep enabled and i can't risk touching the lid, or complicated arcane steps to break sleep and allow me to carry it.

https://apps.apple.com/us/app/amphetamine/id937984704?mt=12

Amphetamine (for your Mac!)

Macs in the last decade are like windows computers in the late 90s.

Every single little obvious feature depend on a shaddy shareware app running on your taskbar.

want to close the lid? amphetamine. Want to copy paste history? copyQ. Want per-window alt-tab? Switch. Want to be able to change the volume? soundflower.

i have some twenty icons there now. And that's not even counting the chrome ones to disable features i don't want on the browser. sigh.

It suspends/resumes just fine as long as your OS supports it. The issue is that you need much better runtime power management since it's now up to the OS to put parts in a low power state rather than relying on the firmware to do it.

well the point is that OpenBSD does not support it, so having OpenBSD on a laptop removes the laptop-ness.

No. Modern firmwares usually support S3 just fine - but it's patched away to make "modern standby" work more easily from the perspective of the hardware manufacturer.

With enough whining (ex: the Thinkpad community), the manufacturer can be convinced to replaced their half baked solution by something slightly better.

If you do not care about TPM, you can also patch your ACPI tables yourself.

It's the same for the recent Dell laptops, unfortunately [1].

[1] https://news.ycombinator.com/item?id=25940172

No, it's a software problem.

First, try disabling TPM (because of a TXT attack from S3), cf https://forums.freebsd.org/threads/acpi-entering-s3-cant-wak... and https://www.darkreading.com/vulnerabilities---threats/new-at...

If S3 is not supported, it is usually due to laziness, to prevent an ACPI GPE storm and causing wakeups in S0ix. People who glue together BIOS code and ACPI tables are not the best and the brightest: instead of using a context dependent EC mask, they simply disable the GPE altogether.

You can add that back with a DSDT patch: all you need is a vector for PRW (power resource wake), making sure the GPE for EC wake interrupt is not masked.

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