Atte wrote: > On 08/08/2015 04:05 PM, Clemens Ladisch wrote: >> Atte wrote: >>> When I enable the device in virtualbox, it seems to disappear from the >>> linux >> >> USB devices cannot be shared between host and VM. > > Ok. I was just hoping to "listen in" on the traffic. I imagined the bits > must be running somewhere in my linux system, even though it show up in > virtualbox. Virtualbox knows about that data, but it has no interface for you to access it. >> Please show the output of "lsusb -v" for this device. > > AudioControl Interface Descriptor: > baInterfaceNr( 0) 1 > Interface Descriptor: > bInterfaceClass 1 Audio > bInterfaceSubClass 3 MIDI Streaming > bInterfaceProtocol 0 This is a plain MIDI device, and there is no other obvious mechanism to access the device, so it is likely that the software uses MIDI for its vendor-specific stuff. Anyway, Virtualbox uses the Linux API to access the real USB controller, so it should be possible to use usbmon: https://www.kernel.org/doc/Documentation/usb/usbmon.txt > bmAttributes 0xa0 > (Bus Powered) > Remote Wakeup > MaxPower 100mA > Interface Descriptor: > bInterfaceNumber 0 I guess this is from some other device? Regards, Clemens _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user