NOTE as regards the need repeatedly physically to unplug and reconnect the 3G USB dongle before a functioning internet connection is established:
As noted in #1, one of the issues with 3G USB dongles under Ubuntu is the erratic and unpredictable need physically to unplug the dongle and to plug it back in several times (sometimes more than ten times, rather than just up to five as noted earlier) before Network Manager finally establishes a successful internet connection. These 3G dongles have no hardware reset switch, and Network Manager has no option to reset the recognition and handshake sequence after a failed connection attempt. However, these dongles generally work flawlessly under Microsoft Windows, connecting routinely on the first attempt. This suggests that some of the problems may be due not merely to Network Manager alone, but to an interplay under Ubuntu between (1) Network Manager itself, (2) the mode-switch tool for controlling flip-flop 3G USB modem dongles, and/or (3) the data provided by "mobile-broadband-provider-info". Failures at the Network Manager - mode-switch tool level appear the most likely. As regards (2), the mode-switch tool provided under Ubuntu is "usb- modeswitch" together with "usb-modeswitch-data". Perhaps the alternative tool "ozerocdoff" (not in the Ubuntu repos, and not tested, but available at www.pharscape.org) might be a useful source and inspiration for improvement here. However, clearly, addressing the mode-switching of flip-flop 3G USB dongles is likely to resolve at best only a part of the issues regarding Network Manager raised under #1. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to the bug report. https://bugs.launchpad.net/bugs/796872 Title: Serious Network Manager Issues with Mobile Broadband To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager-applet/+bug/796872/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
