Hi, let me join the party:
I have a different error in dmesg, but apart from that everything you guys say here resonates a lot with me. Especially the hard-to-reproduce part.
Sometimes it works just fine for entire sessions. Then I reboot/shutdown, and on the next one it’s completely useless (in my case the authentication to the base station times out).
There seems to be some correlation with the router (I have a TP-Link Archer C80 - no WiFi 6 on that one). Because on other APs (my ISP’s router and my Pixel 8 Pro’s hotspot) it works flawlessly and consistenly so.
With my previous laptop I had to stop taking firmware updates for my AX201 because it would destroy bandwidth whenever my BT earbuds were also connected (and that was an Intel board), now this…
Hardware is hard nowadays