bt hda1 # airodump-ng ath0
ioctl(SIOCSIWMODE) failed: Invalid argument

ARP linktype is set to 1 (Ethernet) - expected ARPHRD_IEEE80211
or ARPHRD_IEEE80211_PRISM instead.  Make sure RFMON is enabled:
run 'ifconfig ath0 up; iwconfig ath0 mode Monitor channel <#>'
Sysfs injection support was not found either.

bt hda1 #