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Standard User mrdigital03
(newbie) Mon 24-Dec-12 18:12:41
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Re: Broadcom wireless driver detects other routers except mi


[re: Uilebheist] [link to this post]
 
As the wireless is working it does display the available networks in the UBUNTU NETWORK MANAGER except for my router.

Also I have already tried using sudo iwlist eth1 scan ; it is the same thing all over again, displays all the networks except mine.

I have tried almost everything; I have run out of ways to think what might be wrong frown
Standard User Uilebheist
(legend) Mon 24-Dec-12 18:15:23
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Re: Broadcom wireless driver detects other routers except mi


[re: mrdigital03] [link to this post]
 
Yes, that would actually match the information from dmesg. See my other reply.
Standard User mrdigital03
(newbie) Mon 24-Dec-12 18:16:51
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Re: Broadcom wireless driver detects other routers except mi


[re: Uilebheist] [link to this post]
 
OUTPUT OF sudo iw reg set GB:

sudo: iw: command not found

what do you mean by INVISIBLE? my router is not in HIDE ESSID MODE

Also I can see my router in windows 7 and on my android phone


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Standard User Uilebheist
(legend) Mon 24-Dec-12 18:18:57
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Re: Broadcom wireless driver detects other routers except mi


[re: mrdigital03] [link to this post]
 
Sorry, I mean invisible in the sense that it is on a channel which cannot be accessed due to regulatory restrictions.
Will check on a Ubuntu install I can access to see where to find the iw command or equivalent... will get back with more information as soon as I have it.
Standard User mrdigital03
(newbie) Mon 24-Dec-12 18:20:02
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Re: Broadcom wireless driver detects other routers except mi


[re: Uilebheist] [link to this post]
 
Thanks smile
Standard User Uilebheist
(legend) Mon 24-Dec-12 18:29:05
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Re: Broadcom wireless driver detects other routers except mi


[re: mrdigital03] [link to this post]
 
OK, the thing I can ssh to is Ubuntu 12.04 not 12.10 so this may or may not work the same... however I'd expect this to be the same.

First make sure you've installed the "iw" and "crda" packages - otherwise you may not be able to set the regulatory domain correctly. Then you can try "sudo iw reg set GB" and try listing the wrreless networks again.

To make the change permanent, edit the file /etc/default/crda and it has a line:

REGDOMAIN=

Change that to

REGDOMAIN=GB

As I said, hopefully this is the same in 12.10 but if not let us know and I'll dig further.
Standard User mrdigital03
(newbie) Mon 24-Dec-12 19:44:21
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Re: Broadcom wireless driver detects other routers except mi


[re: Uilebheist] [link to this post]
 
In reply to a post by Uilebheist:
OK, the thing I can ssh to is Ubuntu 12.04 not 12.10 so this may or may not work the same... however I'd expect this to be the same.

First make sure you've installed the "iw" and "crda" packages - otherwise you may not be able to set the regulatory domain correctly. Then you can try "sudo iw reg set GB" and try listing the wrreless networks again.

To make the change permanent, edit the file /etc/default/crda and it has a line:

REGDOMAIN=

Change that to

REGDOMAIN=GB

As I said, hopefully this is the same in 12.10 but if not let us know and I'll dig further.


ok, so I have installed the IW and CRDA packages and now the command sudo iw reg set GB works.

Then tried to re-list the wireless networks, but STILL DOES NOT WORK!!

changed the CRDA file entry to GB like you said, re-listed the network again; STILL DOES NOT WORK.

I thought maybe to kick start I might need to restart the OS so did that, STILL DOES NOT WORK.
Standard User Uilebheist
(legend) Mon 24-Dec-12 19:51:44
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Re: Broadcom wireless driver detects other routers except mi


[re: mrdigital03] [link to this post]
 
Then I think I am running out of ideas...
I'll be away from the forum tomorrow (something else planned smile) but if I think of something else I'll post back later in the week.
Standard User mrdigital03
(newbie) Mon 24-Dec-12 20:05:32
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Re: Broadcom wireless driver detects other routers except mi


[re: Uilebheist] [link to this post]
 
In reply to a post by Uilebheist:
Then I think I am running out of ideas...
I'll be away from the forum tomorrow (something else planned smile) but if I think of something else I'll post back later in the week.


Thanks smile
Standard User ukhardy07
(fountain of knowledge) Mon 24-Dec-12 20:58:52
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Re: Broadcom wireless driver detects other routers except mi


[re: mrdigital03] [link to this post]
 
Use channel 1, 6 or 11.

Plenty of computers sold in the UK even on windows can't find channels 12 and 13

I pretty much guarantee this is the problem.
You say other channels cause drop outs. I highly disbelieve that. Most routers use 1 6 or 11. This avoids overlapping channels.

So if 6 causes drop outs chances are 11 does not.

Also by using 13 you are interfering with routers on channel 11 due to overlapping channels.
So being on 13 you are still getting interference from routers on channel 11

You'd be better on 11 than 13 if there are devices using 11. Why?

When two routers are on the same channel they work together.
Eg router 1 transfers data, router 2 holds off for a micro second before transmitting.
This means that routers 1 and 2 don't collide with each other wirelessly.

On channel 13 with your router and channel 11 on another router...
Router 1 (ch 13) can't see router 2 (ch11)
Router 1 and 2 both transmit data wirelessly at the same time pretending each other don't exist
Net result is collisions in the air which means the data has to be sent over and over and over and over before it finally gets to you
Net result = performance degradation compared to sharing the wifi channel where both can work together.

On the same channel they wait for each other avoiding collisions completely. This dramatically reduces the need to constantly retransmit data. It's better.

The IDEAL solution is to have 1,6 or 11 with no other router on. So it's all yours.

Lesson use 1 6 or 11.

Edited by ukhardy07 (Mon 24-Dec-12 21:02:00)

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