A nuisance issue that appeared in 12.0 and continues in 12.1.
Suspend/resume basically works fine, but the system hangs for 20 seconds between
iwn0: iwn_read_firmware: ucode rev=0x09dd0401
uhub0: <Intel EHCI root HUB, class 9/0, rev 2.00/1.00, addr 1> on usbus0
Running 11.x, resume was very quick.
I'm not too concerned about it, but maybe investigating this issue will uncover solutions for more serious problems. One more data point...
Is there any chance you can bisect between the fast and slow versions?
(In reply to Ed Maste from comment #1)
Yes, but not real soon. I have to finish up some projects, after which I can try an 11.3 install on a spare disk.
For now I'll add that I don't see this behavior on a ThinkPad T61 (which also uses iwn) or ThinkPad X120e (rtwn).