I bought a Intel 7260-ac wifi adapter (support 802.11ac) and want to setup it in AP mode (hotspot) in 802.11ac but it failed.
Then I noticed that iw list
shows all 5GHz channels as (no IR)
as below:
Frequencies:
* 5180 MHz [36] (16.0 dBm) (no IR)
* 5200 MHz [40] (16.0 dBm) (no IR)
* 5220 MHz [44] (16.0 dBm) (no IR)
* 5240 MHz [48] (16.0 dBm) (no IR)
* 5260 MHz [52] (16.0 dBm) (no IR, radar detection)
DFS state: usable (for 1284 sec)
* 5280 MHz [56] (16.0 dBm) (no IR, radar detection)
DFS state: usable (for 1284 sec)
* 5300 MHz [60] (16.0 dBm) (no IR, radar detection)
DFS state: usable (for 1284 sec)
...
I googled about it and found this: http://www.spinics.net/lists/linux-wireless/msg124066.html saying that "The NO-IR flag then means you cannot use modes of operation that require you to initiate radiation first"
Also, I found that it's related to "world regulatory domain" which restrict some usage in some wireless frequencies, and it's different in some country.
So here's my question: is the no IR
restriction set by linux kernel or by hardware? If it's by linux kernel, can I just set it to another country which allows it? (Or a custom configuration if no country allows it?) How?
PS: I'm not sure if it's the right place to ask this question but I don't see where else I can go.. Thanks in advance!