I can confirm that this is still going on in Natty (11.04). Usually after a few suspend/resume cycles, the cdc_acm module is loaded and recognized when a USB dongle is used, but NetworkManager refuses to identify it properly. Currently running:
network-manager 0.8.4~git.20110319t175609.d14809b-0ubuntu3 linux-image-2.6.38-8-generic 2.6.38-8.42 ** Changed in: network-manager (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/367856 Title: Contact is lost with internal HSDPA/UMTS modem after some random period - a suspend and wake cycle or a restart is needed to be able to use the modem again To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/367856/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs