Comment 1 for bug 974838

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Evan Carroll (evancarroll) wrote : Re: Wireless Dropout - Tx aggregation enabled on ra

I believe this is a continuation *but* not a duplicate of https://bugs.launchpad.net/ubuntu/+source/linux/+bug/876147

I previously had the following in /etc/modprobe.d/iwlagn.conf

options iwlagn 11n_disable=1

This made everything work for my Lenovo x200s. Then I upgraded and iwlagn was renamed to iwlwifi. Iwlagn was aliased to iwlwifi.conf however the options in the modprobe.d did not carry over. I had to rename the file to iwlwifi.conf (/etc/modprobe.d/iwlwifi.conf) and then change the contents to

options iwlwifi 11n_disable=1

This stops my iw card from going 802.11n but permits me to hold a steady connection.