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#1 2013-01-05 23:40:45

Registered: 2010-01-30
Posts: 191

Centrino® Advanced-N 6235 wifi low signal

Hi guys,
I have this wifi adapter in my book and its drivers makes me unhappy. I just don't have connection in my room distanced about 12-15 meters form router. The thing is that under windows, signal is very good so, it have to be connected to software drivers not hw issue.
I searched the forum, and I found that under 3.4 kernel there were problems, but I try this anyway:

modprobe iwlwifi 11n_disable=1

..and it did NOT help.

# iwconfig 
lo        no wireless extensions.

wlan0     IEEE 802.11abgn  ESSID:"zenit"  
          Mode:Managed  Frequency:2.412 GHz  Access Point: F8:D1:11:8D:74:18   
          Bit Rate=1 Mb/s   Tx-Power=15 dBm   
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:off
          Link Quality=54/70  Signal level=-56 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:9   Missed beacon:0

Its really annoying to move to windows every time I am in my room.
Is someone experiencing similar issue? What should I do about this?

Thanks for recommendations.

Last edited by greengold (2013-01-05 23:46:23)


#2 2013-01-06 00:48:10

From: Los Gatos, CA
Registered: 2012-05-19
Posts: 8,412

Re: Centrino® Advanced-N 6235 wifi low signal

I have this card, but it works fabulously for me... though I have no idea how it would work with windows, so I cannot comment on your comparison. 

I see you were given the idea somewhere about having the module loaded with certain options.  I do hope that after you wrote that modprobe.d file, you either unloaded and then loaded the module (or rebooted).

If you want to see other options for the module, use

$ modinfo iwlwifi 

I am not sure if any of it will help you, as I have not had any issues, but I have heard that disabling the 5ghz helps sometimes.

If you want to see what options your module is loaded with, you can use systool like this

# systool -m iwlwifi -av 


#3 2013-01-07 22:49:45

Registered: 2010-01-30
Posts: 191

Re: Centrino® Advanced-N 6235 wifi low signal

thanks, woofy, this helped. Its really better when running without 'a' standard... but still its not as it should be hmm


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