My laptop has wireless card Intel Centrino Advanced-N 6230 and I had a similar problem on some access points: connection could be established and worked but bitrate would be 1Mb with intermittent packet delays up to 1000ms which made SSH sessions almost unusable.
I tried to build the latest kernel but it did not help much. However downloading the latest firmware from the official website helped greatly - now uplink speed is reasonably high and stable and packet lag is much lower. http://intellinuxwireless.org/?n=Downloads -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/979371 Title: iwlwifi WPA/WPA2 connection slow to establish on Ubuntu 12.04 Status in “network-manager” package in Ubuntu: New Bug description: Wifi connection (WPA2) is very slow upon login, can take several attempts but usually connects after a minute or so. Connecting to an unsecure network works fine connecting within a second or so after login. My previous Ubuntu 11.10 and 12.04 alpha installations did not have this problem. driver: iwlwifi setup: Ubuntu 12.04 beta2 amd64 on a Toshiba Portege R600 uname -a Linux kuiper 3.2.0-22-generic #35-Ubuntu SMP Tue Apr 3 18:33:15 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux lspci | grep WiFi 01:00.0 Network controller: Intel Corporation WiFi Link 5100 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/979371/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
