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after upgrading my ubuntu to 11.10, my internet connexion became SO slow or it goes away for a couple of seconds.

It is a wireless connection, I have a dell studio 1525 and I have not install any additional driver

I know that it is a general question, but I really have not any more information.

Thanks

Alejandro
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3 Answers3

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Same issue here with network controller: Intel Corporation WiFi Link 5100 Everything was working perfectly with previous versions of Ubuntu but after updating from Natty 11.04 to Oneiric 11.10 the problems with N-Channel started.

The following commands solved the problem.

sudo rmmod iwlagn
sudo modprobe iwlagn 11n_disable=1

Try browsing again and if there is an improvement, make this change permanent by creating an 'options' file: 

gksu gedit /etc/modprobe.d/options.conf
and add the line 
options iwlagn 11n_disable=1

Hope this will help.

Robert Kresse
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  • First of all you need to check physically you wireless card ; by making connecting to your wireless network, if this succeed then ping to the localhost 127.0.0.1 if there no packet missing, then make ping to default gateway that is usually ends in .1 for example 10.0.0.1 (X.X.X.1 or X.X.X.255) if you test all this meas that your WNIC is is working well!
  • The second think that you should do is test your Internet services provider by entering to this web page: http://speedtest.net/ if your speed test don't agrees whit your ISP speed then you should call your ISP for technicals assistances

try to test it in Windows if this still happen my only conclusion is that you have a problem whit your ISP

Ran Shemer
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I had a similar issue, this link seems to be the fix! http://www.unixmen.com/linux-tutorials/linux-distributions/linux-distributions4-ubuntu/1785-resolve-slow-connexion-when-using-wifi-in-ubuntu-1104-natty-narwhal

Truefire
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