I noticed the same problem (can't connect to the wireless network after upgrading from 11.04 to 11.10) on Lenovo ThinkPad T500.
lspci: Intel Corporation PRO/Wireless 5100 AGN [Shiloh] The work around disabling n also worked for me: sudo rmmod iwlagn sudo echo "options iwlagn 11n_disable=1" > /etc/modprobe.d/disable11n.conf sudo modprobe iwlagn -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/836250 Title: [Oneiric] Intel Corporation Centrino Ultimate-N 6300 poor networking, packet loss and very slow Lenovo X201 and T500 laptops To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/836250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
