This is probably related to some iwl3945 problems reported upstream. In my case, it is unable to configure network IP address using DHCP. You should see some messages in system log. Also you can try static IP configuration.
If you are not using Intel 3945 wifi, ignore my hint and provide your HW configuration, because in bug description is only unrelated sound card description. -- Wireless network connection stopped working https://bugs.launchpad.net/bugs/591016 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
