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i installed ubuntu 11.10 and i am trying to connect my laptop through wifi. but the wireless isn't working. my wilreless is:

Intel Corporation PRO/Wireless 2915ABG [Calexico2] Network Connection (rev 05)

My laptop is a Dell Xps M140

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I was having a similar problem after a fresh install of Ubuntu 11.10 on my Dell Studio XPS with an Intel wireless card. Network traffic was very slow, down to barely a trickle.

Resolve slow connexion when using wifi in ubuntu 11.04, 11.10 Oneiric Ocelot and LinuxMint11 suggests disabling IPv6 or ath9k hardware encryption, but neither resolved the issue.

A couple of comments did the trick for me, however.

2011-10-15 00:42:13

FYI, Ubuntu 11.10 seems to have a bug in regards to 802.11n. These methods didn't work for me and I actually had to turn N off at my router. It's a high priority bug right now...

2011-10-15 08:56:36

1 & 2 didn't work for me but this did:

sudo rmmod -f iwlagn
sudo modprobe iwlagn 11n_disable=1

bug with n wifi

make this permanent:

gksudo gedit /etc/modprobe.d/iwlagn-disable11n.conf


options iwlagn 11n_disable=1

save & quit

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I had the same problem in all distributions of Linux I tried recently.

Finally this was the answer, but instead of iwlagn, I put in iwl4965 in my WiFi-Driver.

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