More information: Thanks to busybox being installed, I used its microcom utility and tested that the bluetooth RFCOMM link does work as I can submit the AT commands to the modem and the modem responded as expected. I can subsequently shut down the link too with blueman without seeing a hang/crash. In my opinion it seems to be working but there may be a separate unexpected BAPI change going on here.
I also want to make a correction here: the more exact error that I got was: Connection Failed: Modem Manager did not support the connection. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1165433 Title: Kernels from 3.8.x to 3.11.x panic on bluetooth DUN disconnect To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1165433/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs