Re: Incorrect signal levels reported using wpa_supplicant's driver_nl80211

[Brian Morrison <bdm fenrir org uk>]

On Tue, 03 Nov 2009 01:07:22 +0200
Maxim Levitsky <maximlevitsky gmail com> wrote:

> > This is *exactly* why 'qual' is there: so that the driver itself can
> > figure out what the hell it's signal level is, and so that NM doesn't
> > have to go around assuming stuff.  
> It appears as kernel developers want to drop quality calculations
> altogether, and report everything in dBms (right?) 

But quality does not necessarily track signal level. Consider the case
where a second AP is on the same frequency but weaker than the AP that
is associated with. The quality of the connection is the difference in
signal levels (roughly the SNR) which is not the same as the signal
level of the stronger AP.

-- 

Brian Morrison

                "I am not young enough to know everything"
                                                          Oscar Wilde