Hi Johannes,
On 06/11/12 16:39, Johannes Berg wrote:
On Tue, 2012-11-06 at 16:54 +0100, Johannes Berg wrote:
BSS 82:e1:fa:1a:65:00 (on wlan0) -- associated
[...]
HT operation:
* primary channel: 9
* secondary channel offset: above
As you can see, it's using HT40+ on channel 9 (2452 MHz). Your HT40
allow (correctly) map showed:
2452 HT40 -
This is because HT40+ isn't actually allowed on channel 9 by the
standard (cf. 802.11-2012 Table E-1 (US), E-2 (Europe), E-3 (Japan).
Oops, no, that is obviously wrong. This is permitted outside the US, and
that is reflected in those tables as well (I was confused). However,
your AP isn't transmitting any info on where it is, and your device is
set up for world roaming (country is "00" rather than a real country).
Thus, channel 13 isn't allowed and you can't do HT40+ on channel 9.
In the AP's dmesg output which I included in my other message, I see this:
<6>[ 9.300000] cfg80211: Regulatory domain changed to country: GB
So it seems the AP knows where it is, but is it not transmitting that to
the client?
Eddie
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