Hi Richard, I'm glad you have paid attention to this problem. A few weeks ago I've upgraded my Ubuntu version from 14.04 to 16.04 and faced with this issue. Now every time before connecting my USB sound-card I have to kill the 'fwupd' process. Here is output from the 'dfu-tool list' command:
- When 'fwupd' is running: Found 1397:0501 [v1.0]: Status: cannot get device state: transfer failed - After killing 'fwupd' and replugging sound-card: Found 1397:0501 [v1.0]: Mode: runtime Status: OK State: appIDLE ID: 0 Cipher: none Region 0x00: Zone:0, Sec#:0, Addr:0x00000000, Size:0x0000, Caps:0x3 The 'fwupd' process itself using 1.2 - 1.8 % of CPU (model name: Intel(R) Core(TM) i3 CPU M370 @2.40GHz). Also please check the attachments: lsusb (with connected working/not-working sound-card) and fwupd verbose output (started with working sound-card/connecting sound-card when 'fwupd' running) diffs. Hope this will help. ** Attachment added: "Output diffs." https://bugs.launchpad.net/ubuntu/+source/fwupd/+bug/1574079/+attachment/4672573/+files/diffs.tar -- 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
