seem your USB audio did not have any volume.controls post the output of alsa-info.sh
lsusb -vvvv and pulseaudio verbose log 5646.825928] cannot submit datapipe for urb 0, error -28: not enough bandwidth [ 5646.826103] cannot submit datapipe for urb 0, error -28: not enough bandwidth [ 5646.826285] cannot submit datapipe for urb 0, error -28: not enough bandwidth [ 5659.702970] retire_capture_urb: 140 callbacks suppressed [ 5775.552402] usb 2-1.4: USB disconnect, device number 4 [ 5779.333175] usb 3-2: new full-speed USB device number 2 using xhci_hcd [ 5779.392795] xhci_hcd 0000:05:00.0: ERROR: unexpected command completion code 0x11. [ 5779.392814] usb 3-2: Not enough bandwidth for altsetting 1 [ 5779.393001] xhci_hcd 0000:05:00.0: ERROR: unexpected command completion code 0x11. [ 5779.393013] usb 3-2: Not enough bandwidth for altsetting 2 [ 5779.499483] xhci_hcd 0000:05:00.0: ERROR: unexpected command completion code 0x11. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1000811 Title: [USB-Audio - Razer Megalodon, playback] Underruns, dropouts or crackling sound To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1000811/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
