[mjg59]

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.

[neurobashing]

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

[1996]

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.