On my last laptop, sleep also crashed the wireless card. But, if I restarted the system it would come back.
Guess what hibernate does? It restarts the system. After many years of carrying around a USB wifi card, when systemd hibernated my system on me, it also made the wireless card start working again! Hibernating fixed my broken wifi.
Oh thanks, that is super helpful to keep my state if I accidentally hit fn-f1 which the manufacturer hardcoded to sleep. One likely blocker is that I think restart also crashes my wireless card. Maybe hibernate will work.
Guess what hibernate does? It restarts the system. After many years of carrying around a USB wifi card, when systemd hibernated my system on me, it also made the wireless card start working again! Hibernating fixed my broken wifi.