What is the exact model name of your dongle. Please reboot, reproduce the failure, connect and then run "apport- collect 1099696" in a terminal to provide more information.
** Changed in: network-manager (Ubuntu) Status: New => Incomplete -- 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/1099696 Title: Can't reconnect 3G HSPA after disconnect ; log out and in fixes it Status in “network-manager” package in Ubuntu: Incomplete Bug description: I try to connect with connection named "Hutch" which is associated with a 3G dongle and HSPA service. The first time it connects, but if it is disconnected and I try to reconnect it does not work. nmcli con up id Hutch ** (process:21044): WARNING **: async_got_type: could not read properties for /org/freedesktop/NetworkManager/ActiveConnection/19: Method "Get" with signature "ss" on interface "org.freedesktop.DBus.Properties" doesn't exist ** (process:21044): WARNING **: async_got_type: could not read properties for /org/freedesktop/NetworkManager/ActiveConnection/19: Method "Get" with signature "ss" on interface "org.freedesktop.DBus.Properties" doesn't exist to make this work I need to unplug and plug dongle again or logout and login again.This wos working on 12.04 and I doubt after update it to 12.04.1 this occured. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1099696/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp