This problem *may* be related to bug #990337 - driver loading failed there because of an issue with finding "modprobe" on the system. AFAIK this is limited to the C wrapper, so if it is the same problem it is Ubuntu-only.
To be sure, we would need to see a log for the mode switching. Bug reporter (or someone else with the problem), can you please enable logging in /etc/usb_modeswitch.conf and post the resulting log after the next modem plug-in? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/996664 Title: Huawei E173 does not switch to modem mode after uparge to 12.04LTS (in 11.10 worked well out of box) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/usb-modeswitch/+bug/996664/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs