I'm trying to set up a wireless card in my new system. I'm using a card of the same model that is working in an older system of mine. The only significant difference between them is the new system is amd64 and the old one is x86. When I try to 'modprobe ath_pci', I get about 60 "Unknown symbol" errors like: wlan: Unknown symbol wireless_send_event ath_rate_sample: Unknown symbol ether_sprintf ath_pci: Unknown symbol ieee80211_encap I can't get the new system online so I can't easily post emerge --info. Let me know if you'd like to see a specific part of emerge --info and I will type it in, or if necessary, I will burn it all to a CD and include it here.
I'm very happy to report that this was fixed by removing module versioning support from the kernel.