Same problem here with MacBookPro4,1, using the STA driver does not change the problem :
$ sudo iwlist eth1 scanning eth1 Failed to read scan data : Invalid argument
b43 does not seems to work...
Same problem here with MacBookPro4,1, using the STA driver does not change the problem :
$ sudo iwlist eth1 scanning
eth1 Failed to read scan data : Invalid argument
b43 does not seems to work...