[Solved] One particular wifi is invisible

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fales

[Solved] One particular wifi is invisible

Post by fales »

Hi guys,

I'm trying to connect to a wifi. I has been using it before and nothing happened with it since then. However it is invisible to me now (I reinstalled from mint 15 of 16 to mint 17). I can see may be 20 different wifis there but can't this particular one. My mobile phone is able to connect to it. I have tried to use the proprietary driver of wificard - without success. I have never had problems with connecting to a wifi. The wifi is 802.11n and I am able to see another such a wifi.

What could I do?

I would be grateful for any suggestions.
Last edited by LockBot on Wed Dec 28, 2022 7:16 am, edited 2 times in total.
Reason: Topic automatically closed 6 months after creation. New replies are no longer allowed.
JeremyB
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Posts: 13771
Joined: Fri Feb 21, 2014 8:17 am

Re: One particular wifi is invisible

Post by JeremyB »

Do you know what channel this wifi is on?
fales

Re: One particular wifi is invisible

Post by fales »

Channel: 12, b, g, n, 144.4 Mbps, Infrastracture.

There are two other wifies on this channel. I can see neither of them. However the computer I investigated the channels with has stronger wifi, therefore it does not have to be the reason (the channel). The wifi I am trying to connect is the strongest at the place so it should not be problem of signal.
JeremyB
Level 21
Level 21
Posts: 13771
Joined: Fri Feb 21, 2014 8:17 am

Re: One particular wifi is invisible

Post by JeremyB »

What does

Code: Select all

iwlist channels
or

Code: Select all

iw reg get
reveal?
fales

Re: One particular wifi is invisible

Post by fales »

It reveals that the channel 12 and also some other (e.g. 13) are missing.

By what it can be caused? Does the hot spot change its channel? It was working before reinstallation of my computer - do I miss something now to have it working?

Edit: the output of iw reg get (I don''t understand to it)
country US:
(2402 - 2472 @ 40), (3, 27)
(5170 - 5250 @ 40), (3, 17)
(5250 - 5330 @ 40), (3, 20), DFS
(5490 - 5600 @ 40), (3, 20), DFS
(5650 - 5710 @ 40), (3, 20), DFS
(5735 - 5835 @ 40), (3, 30)
(57240 - 63720 @ 2160), (N/A, 40)
JeremyB
Level 21
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Posts: 13771
Joined: Fri Feb 21, 2014 8:17 am

Re: One particular wifi is invisible

Post by JeremyB »

And what country are you in?
fales

Re: One particular wifi is invisible

Post by fales »

I am in Czech Republic, computer is set to Czech locale.
JeremyB
Level 21
Level 21
Posts: 13771
Joined: Fri Feb 21, 2014 8:17 am

Re: One particular wifi is invisible

Post by JeremyB »

fales wrote:I am in Czech Republic, computer is set to Czech locale.
Ok, so lets set it

Code: Select all

sudo iw reg set CZ

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sudo gedit /etc/default/crda
The last line is REGDOMAIN=??, you need to make it be

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REGDOMAIN=CZ
then save and exit program and reboot
And with any luck after the reboot

Code: Select all

iwlist channel
will show channels 12 and 13 and wifi will find those routers
fales

Re: One particular wifi is invisible

Post by fales »

Unfortunately I cannot try the wifi right now, anyway I can see the channel 12 in iwlist channel so I suppose it will be working :)

Thank you very much for your help :)
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