First of all, very good new year to all of you. Today I have encountered the same problem.
The log looks like this: Jan 2 13:21:27 acer-laptop NetworkManager: <info> (ttyUSB0): powering up... Jan 2 13:21:27 acer-laptop NetworkManager: <info> Registered on Home network Jan 2 13:21:38 acer-laptop NetworkManager: <info> Associated with network: +COPS: 0,0,"vodafone ES Jan 2 13:21:38 acer-laptop NetworkManager: Invalid byte sequence in conversion input Jan 2 13:21:46 acer-laptop NetworkManager: <WARN> set_apn_done(): Setting APN failed Jan 2 13:21:46 acer-laptop NetworkManager: <info> (ttyUSB0): device state change: 4 -> 9 Jan 2 13:21:46 acer-laptop NetworkManager: <debug> [1230898906.004312] nm_serial_device_close(): Closing device 'ttyUSB0' Jan 2 13:21:46 acer-laptop NetworkManager: <info> Marking connection 'Vodafone' invalid. As you can see, the problem is the same. Network Manager is not capable of interpreting the string of at+COPS? In minicom the answer to at+cops? is this: at+cops? +COPS: 0,0,"vodafone ES�",2 So, I suppose that the problem is the non-printable character at the end of the name of the Network. A workaround I have found until the problem is resolved, is reconnecting the modem and trying to connect the same moment the Modem is detected by the kernel (monitoring the syslog), so the modem has no time to connect to the network and at+cops? answers with "FFFFFFFF": Jan 2 13:22:47 acer-laptop NetworkManager: <info> (ttyUSB0): powering up... Jan 2 13:22:47 acer-laptop NetworkManager: <info> Registered on Home network Jan 2 13:22:47 acer-laptop NetworkManager: <info> Associated with network: +COPS: 0,0,"FFFFFFFFFFFFFFFF",2 Jan 2 13:22:47 acer-laptop NetworkManager: <info> Connected, Woo! Jan 2 13:22:47 acer-laptop NetworkManager: <info> Activation (ttyUSB0) Stage 2 of 5 (Device Configure) scheduled... Jan 2 13:22:47 acer-laptop NetworkManager: <info> Activation (ttyUSB0) Stage 2 of 5 (Device Configure) starting... Jan 2 13:22:47 acer-laptop NetworkManager: <info> (ttyUSB0): device state change: 4 -> 5 Jan 2 13:22:47 acer-laptop NetworkManager: <info> Starting pppd connection Thank you for your interest in the problem. -- NetworkManager HUAWEI E220 +COPS Invalid Byte Sequence https://bugs.launchpad.net/bugs/311508 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
