Public bug reported: After upgrading the firmware on my Huawei E220 modem to 11.117.10.02.00 I can't connect using NetworkManager. Before the firmware upgrade it was connecting without problems.
My manual pppd scripts still connect without problems. The problem seems to be that the modem hangs when /dev/ttyUSB1 is being probed by ModemManager. The device used to connect the modem is /dev/ttyUSB0. If I start the command 'cat /dev/ttyUSB1' in a terminal before ModemManager starts its probing everything works fine. It seems like the connection to /dev/ttyUSB1 is blocked by the cat command and the probing of ttyUSB1 fails. I've attached a log file of a failed connection with ModemManager started in debug mode: "ModemManager Failure On E220 Connect Full (From modem attached).txt". I will also attach a log file of a successful connection (with 'cat /dev/ttyUSB1' running in a terminal). ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: modemmanager 0.5-1ubuntu1 ProcVersionSignature: Ubuntu 3.0.0-15.26-generic-pae 3.0.13 Uname: Linux 3.0.0-15-generic-pae i686 NonfreeKernelModules: nvidia ApportVersion: 1.23-0ubuntu4 Architecture: i386 Date: Wed Feb 15 15:05:49 2012 EcryptfsInUse: Yes InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429) ProcEnviron: LANGUAGE=en_GB:en PATH=(custom, user) LANG=sv_SE.utf8 SHELL=/bin/bash SourcePackage: modemmanager UpgradeStatus: Upgraded to oneiric on 2011-10-18 (120 days ago) ** Affects: modemmanager (Ubuntu) Importance: Undecided Status: New ** Tags: apport-bug i386 oneiric -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/932824 Title: ModemManager hangs Huawei E220 Modem when probing ttyUSB1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/modemmanager/+bug/932824/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs