Adding more info, I copied what Taras did with gdb, and added the outut of sudo lsusb -v in three situations: "test running, card unplugged", "test running, card plugged in" and "no test, card working".
Hope it helps. Thanks for looking into this! ** Attachment added: "gdb trace.txt" https://bugs.launchpad.net/ubuntu/+source/fwupd/+bug/1574079/+attachment/4673217/+files/gdb%20trace.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1574079 Title: USB audio device is not recognized after startup in 16.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/fwupd/+bug/1574079/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
