(1) Run the "cm108" utility and you should see something like this:
??? VID? PID?? Product????????????????????????? Sound????????????????? ADEVICE??????? ADEVICE??????????? HID [ptt]
??? ---? ---?? -------????????????????????????? -----????????????????? -------??????? -------??????????? ---------
**? 0d8c 0012? USB Audio Device???????????????? /dev/snd/pcmC1D0c????? plughw:1,0???? plughw:Device,0??? /dev/hidraw0
**? 0d8c 0012? USB Audio Device???????????????? /dev/snd/pcmC1D0p????? plughw:1,0???? plughw:Device,0??? /dev/hidraw0
**? 0d8c 0012? USB Audio Device???????????????? /dev/snd/controlC1?????????????????????????????????????? /dev/hidraw0
(2)? Find the device path, under the sound column, which ends in c for capture.?? In this case, /dev/snd/pcmC1D0c .
(3) Use lsof command to see what process has this device open.? e.g.
$ lsof /dev/snd/pcmC1D0c
COMMAND???? PID USER?? FD?? TYPE DEVICE SIZE/OFF NODE NAME
direwolf 278160?? pi??? 4u?? CHR 116,56????? 0t0? 268 /dev/snd/pcmC1D0c
73,
John WB2OSZ
