I've been using an AKG Perception 120 USB on Ubuntu 17.04 and 16.04. Two weeks ago I installed a fresh version of Ubuntu 18.04. Ever since the USB mic is not working. It is not listed in the audio-settings, neither is it detected by alsa.
Here is the output of dmesg after I pull the USB out and put it in again:
[10035.386439] usb 2-1.5.1: new full-speed USB device number 16 using ehci-pci [10035.501225] usb 2-1.5.1: New USB device found, idVendor=074d, idProduct=3556 [10035.501231] usb 2-1.5.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [10035.501234] usb 2-1.5.1: Product: AKG Perception 120 USB [10035.501237] usb 2-1.5.1: Manufacturer: AKG Acoustics [10035.505468] usb 2-1.5.1: current rate 0 is different from the runtime rate 48000 [10035.506216] usb 2-1.5.1: current rate 0 is different from the runtime rate 48000 [10035.856885] usb 2-1.5.1: current rate 44100 is different from the runtime rate 48000 [10035.921624] retire_capture_urb: 6 callbacks suppressed [10035.930492] usb 2-1.5.1: USB disconnect, device number 16
I'd appreciate any hints. Thanks a lot!