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Wi-Fi Bluetooth for Linux

Anonymous
Not applicable

Hi,

We are unable to change the Wi-Fi available channels that appears in the "iw list". We want to be able to connect to channels 12 and 13. Seems that by default, the module uses the USA regulatory channels.

iw list:

                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)

We have tried to install crda:

iw reg set JP

iw reg get

global

country JP: DFS-JP

        (2402 - 2482 @ 40), (N/A, 20), (N/A)

        (2474 - 2494 @ 20), (N/A, 20), (N/A), NO-OFDM

        (4910 - 4990 @ 40), (N/A, 23), (N/A)

        (5030 - 5090 @ 40), (N/A, 23), (N/A)

        (5170 - 5250 @ 80), (N/A, 20), (N/A), AUTO-BW

        (5250 - 5330 @ 80), (N/A, 20), (0 ms), DFS, AUTO-BW

        (5490 - 5710 @ 160), (N/A, 23), (0 ms), DFS

global

country JP: DFS-JP

        (2402 - 2482 @ 40), (N/A, 20), (N/A)

        (2474 - 2494 @ 20), (N/A, 20), (N/A), NO-OFDM

        (4910 - 4990 @ 40), (N/A, 23), (N/A)

        (5030 - 5090 @ 40), (N/A, 23), (N/A)

        (5170 - 5250 @ 80), (N/A, 20), (N/A), AUTO-BW

        (5250 - 5330 @ 80), (N/A, 20), (0 ms), DFS, AUTO-BW

        (5490 - 5710 @ 160), (N/A, 23), (0 ms), DFS

The CRDA shows that all is configured to accept the channles 12 and 13, but iw list, is showing the same available channels.

We have tried to use wl command:

wl -i wlan0 country JP

wl -i wlan0 channels

1 2 3 4 5 6 7 8 9 10 11 12 13 14

The wl shows that all is configured correctly, but any changes in iw list.

Nothing works.

Our linux only is can see the channels from 1 to 11.

About our linux:

Linux xxxxxx 4.1.15-2.0.1+gb63f3f5 #3 SMP PREEMPT Wed May 31 21:54:57 CEST 2017 armv7l armv7l armv7l GNU/Linux

Can anyone help us? We are really stuck on this. ( 4 days at lest with no result )

Thank you so much in advance to read this post.

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1 Reply
VinayakS_26
Moderator
Moderator

Hi,

try changing the country code by changing the nvram parameter ccode.

or you could use the wpa_supplicant command.

wpa_cli> ifname=wlan0 driver COUNTRY US

-Vinayak

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