dmesg | grep ath5k
[   13.763867] ath5k 0000:03:00.0: can't disable ASPM; OS doesn't have ASPM control
[   13.764130] ath5k 0000:03:00.0: registered as 'phy0'
[   15.009206] ath5k: phy0: Atheros AR2425 chip found (MAC: 0xe2, PHY: 0x70)


and the /etc/network/interface is blank