AW: DFS start_dfs_cac() failed, -1 / nl80211: Failed to start radar detection: -16 (Device or resource busy)

Conrad Kostecki ck at
Mon Aug 25 03:28:50 EDT 2014

> I believe ath9k is capable of running only at 20Mhz bandwidth (your
>config is using 40Mhz) with radar detection.

Hi Michał,
thanks for the hint. When I remove HT40 from ht_capab, hostapd ist starting fine. It seems, you are right. Do you know, if ath10k supports 40MHz with radar detection?


More information about the HostAP mailing list