I've been digging into this a bit more, it seems to me the problem is in communication between network-manager and wpa_supplicant. I enabled debugging in wpa-supplicant, see the attached log file.
** Attachment added: "network-manager and wpa-supplicant debug log on 12.04" https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/994739/+attachment/3149199/+files/syslog-12.04.log ** Also affects: wpasupplicant Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/994739 Title: wireless takes several seconds longer to connect from standby To manage notifications about this bug go to: https://bugs.launchpad.net/wpasupplicant/+bug/994739/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
