Hello to everybody.

I am using an Acer Extensa 5220 and by using the command, the relevant info are:

Card-2: Atheros AR242x / AR542x Wireless Network Adapter (PCI-Express) driver: ath5k

and by typing the output is:

country 00:
(2402 - 2472 @ 40), (6, 20)
(2457 - 2482 @ 40), (6, 20), PASSIVE-SCAN, NO-IBSS
(2474 - 2494 @ 20), (6, 20), NO-OFDM, PASSIVE-SCAN, NO-IBSS
(5170 - 5250 @ 40), (6, 20), PASSIVE-SCAN, NO-IBSS
(5735 - 5835 @ 40), (6, 20), PASSIVE-SCAN, NO-IBSS
(57240 - 63720 @ 2160), (N/A, 0)
.

My problem is that I need to use channel 12 and I can't use it as it disabled.
Indeed, by typing , the relevant part is:

Frequencies:
* 2412 MHz [1] (20.0 dBm)
* 2417 MHz [2] (20.0 dBm)
* 2422 MHz [3] (20.0 dBm)
* 2427 MHz [4] (20.0 dBm)
* 2432 MHz [5] (20.0 dBm)
* 2437 MHz [6] (20.0 dBm)
* 2442 MHz [7] (20.0 dBm)
* 2447 MHz [8] (20.0 dBm)
* 2452 MHz [9] (20.0 dBm)
* 2457 MHz [10] (20.0 dBm)
* 2462 MHz [11] (20.0 dBm)
* 2467 MHz [12] (disabled)
* 2472 MHz [13] (disabled)
* 2484 MHz [14] (disabled)

Theoretically by using the command I shoud be able to enable the channels 12, 13 and 14 but instead I keep on getting the same output:

country 00:
(2402 - 2472 @ 40), (6, 20)
(2457 - 2482 @ 40), (6, 20), PASSIVE-SCAN, NO-IBSS
(2474 - 2494 @ 20), (6, 20), NO-OFDM, PASSIVE-SCAN, NO-IBSS
(5170 - 5250 @ 40), (6, 20), PASSIVE-SCAN, NO-IBSS
(5735 - 5835 @ 40), (6, 20), PASSIVE-SCAN, NO-IBSS
(57240 - 63720 @ 2160), (N/A, 0)

I am not able to understand what is missing and why the country code does not change even after reloading.

Thank to anybody providing useful informations.

I really can't help with this one, but check out this thread


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Thanks for your reply.
Now I must find the time to try doing something like that.
There are two annoying things:
1) with other distributions (like Tails) I can immediately hook on channel 12;
2) when I try to change some parameters I get some error message stating that the change can't be done because the"device is busy" with iw and crda.

Another fact is the lack of configuration files mentioned in the link (for instance etc/modprobe.d/options).