I am experiencing similar problems after upgrading my Acer Aspire One to 11.10 from 11.04. Once connected, my E220 will disconnect and reconnect quite reliably provided it continues to be powered on via its USB connection. Howver if I unplug it or depower it by swirching off, I cannot get it to reconnect on 11.10, and I have to go either to Natty or to Windows to get it to work again. From there, a direct restart to 11.10 will deliver it it back in a condition from which it will connect again. More details on ubintuforums.org/showthread.php?t=1868014
-- 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/868034 Title: Huawei E220 can't connect on Ubuntu 11.10 Status in “network-manager” package in Ubuntu: Incomplete Bug description: I'm using Ubuntu in my HP Pavilion dv6745tx laptop. I cannot connect the Huawei E220 usb modem since 11.10 beta1 (now I'm in beta2). There is no problem in natty. I have found this in syslog Oct 5 07:10:51 ubuntu NetworkManager[1681]: <info> Activation (ttyUSB0) starting connection 'Dialog GSM Postpaid' Oct 5 07:10:51 ubuntu NetworkManager[1681]: <info> (ttyUSB0): device state change: disconnected -> prepare (reason 'none') [30 40 0] Oct 5 07:10:51 ubuntu NetworkManager[1681]: <info> Activation (ttyUSB0) Stage 1 of 5 (Device Prepare) scheduled... Oct 5 07:10:51 ubuntu NetworkManager[1681]: <info> Activation (ttyUSB0) Stage 1 of 5 (Device Prepare) started... Oct 5 07:10:51 ubuntu NetworkManager[1681]: <info> Activation (ttyUSB0) Stage 1 of 5 (Device Prepare) complete. Oct 5 07:10:58 ubuntu NetworkManager[1681]: <warn> GSM connection failed: (32) Sending command failed: 'Resource temporarily unavailable' Oct 5 07:10:58 ubuntu NetworkManager[1681]: <info> (ttyUSB0): device state change: prepare -> failed (reason 'unknown') [40 120 1] Oct 5 07:10:58 ubuntu NetworkManager[1681]: <warn> Activation (ttyUSB0) failed. Oct 5 07:10:58 ubuntu NetworkManager[1681]: <info> (ttyUSB0): device state change: failed -> disconnected (reason 'none') [120 30 0] Oct 5 07:10:58 ubuntu NetworkManager[1681]: <info> (ttyUSB0): deactivating device (reason: 0). Oct 5 07:10:58 ubuntu NetworkManager[1681]: nm_system_iface_flush_routes: assertion `ifindex > 0' failed Oct 5 07:10:58 ubuntu NetworkManager[1681]: nm_system_iface_flush_addresses: assertion `ifindex > 0' failed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/868034/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

