ACS survey errors - "missing noise floor", "insufficient data"; no 40HZ usage?

[Jouni Malinen]

On Thu, Mar 30, 2017 at 07:50:38AM -0700, PGNet Dev wrote:
> What that DOES leave are the logentries
> 
> 	Mar 29 11:55:45 test hostapd[13759]: Failed to check if DFS is required; ret=-1
> 	Mar 29 11:55:45 test hostapd[13759]: handle_probe_req: send failed
> 	Mar 29 11:55:51 test hostapd[13759]: ACS: Survey is missing noise floor
> 	...
> 	Mar 29 11:55:51 test hostapd[13759]: ACS: Channel 149 has insufficient survey data
> 
> which don't seem to be fatal to connectivity.
> 
> Not clear whether those indicate actual problems, or are just log noise.

That indicates the driver not supporting channel survey to allow more
accurate ACS operation based on channel conditions.

-- 
Jouni Malinen                                            PGP id EFC895FA