@rl_dane @samd @justine@snac.smithies.me.uk @justine@bsd.cafe @amin
Also, I recommend to read this #FreeBSD wiki article about suspend setup:
https://wiki.freebsd.org/SuspendResume
And look to the linked lists about tested laptops.
In my experience, the suspend/resume much more depends on the software in the your BIOS chip. E.g. #Thinkpad X220 with proprietary BIOS resumes instantly (tested on FreeBSD 10/11). And X220 with #coreboot / #libreboot needs near 10 seconds to wake up (FreeBSD 14.2/14.3)