I have a Lenovo X1 Carbon Thinkpad (gen 9 I think) which has microphone hardware not supported by OpenBSD. I purchased an inexpensive USB microphone with displays the following dmesg entry:
uaudio0 at uhub1 port 1 configuration 1 interface 1 "C-Media Electronics Inc. USB PnP Sound Device" rev 1.10/1.00 addr 5 uaudio0: class v1, full-speed, sync, channels: 0 play, 1 rec, 3 ctls audio1 at uaudio0 uhidev0 at uhub1 port 1 configuration 1 interface 2 "C-Media Electronics Inc. USB PnP Sound Device" rev 1.10/1.00 addr 5 uhidev0: iclass 3/0 ucc0 at uhidev0: 10 usages, 3 keys, enum wskbd1 at ucc0 mux 1 wskbd1: connecting to wsdisplay0 Unfortunately, it doesn't seem to work with OBSD. Recording a test message with aucat -o file.wav produces a wave file, but aucat -i file.wav is silent. If I plug a headphone into the speaker jack, it works fine with aucat and in actual use. Am I missing something? Sndioctl produces input.level=1.000 input.mute=0 output.level=1.000 output.mute=0 server.device=0(azalia0) app/aucat0.level=1.000 app/audacio0.level=1.000 app/firefox0.level=1.000 app/firefox1.level=1.000 app/iridium0.level=1.000 app/iridium1.level=1.000 app/iridium2.level=1.000 app/iridium3.level=1.000 for both the USB microphone and the headset and with nothing plugged in. Mixerctl produces penguin# cat null.txt inputs.dac-2:3=174,174 inputs.dac-0:1=174,174 record.adc-0:1_mute=off record.adc-0:1=252,252 record.adc-2:3_mute=off record.adc-2:3=252,252 outputs.spkr_source=dac-2:3 outputs.spkr_mute=off outputs.spkr_eapd=on outputs.spkr2_source=dac-2:3 outputs.spkr2_mute=off outputs.spkr2_boost=off inputs.mic=85,85 outputs.mic_dir=input-vr80 outputs.hp_source=dac-0:1 outputs.hp_mute=off outputs.hp_boost=off outputs.hp_eapd=on record.adc-2:3_source=mic record.adc-0:1_source=mic outputs.mic_sense=unplugged outputs.hp_sense=unplugged outputs.spkr_muters=hp outputs.master=255,255 outputs.master.mute=off outputs.master.slaves=dac-2:3,dac-0:1,spkr,spkr2,hp record.volume=255,255 record.volume.mute=off record.volume.slaves=adc-0:1,adc-2:3 record.enable=sysctl if nothing is plugged in. The USB microphone doesn't change this result at all. However, the headphone changes a few things in the mixerctl output as illustrated by this diff: penguin# diff null.txt headphone.txt 8c8 < outputs.spkr_mute=off --- > outputs.spkr_mute=on 11c11 < outputs.spkr2_mute=off --- > outputs.spkr2_mute=on 21,22c21,22 < outputs.mic_sense=unplugged < outputs.hp_sense=unplugged --- > outputs.mic_sense=plugged > outputs.hp_sense=plugged I think this just reflects the change from an internal device to one plugged into the headphone jack. Am I doing something wrong or are we just dealing with an unsupported device? In the latter case, any suggestions for a compact microphone that can be plugged in when needed? As far as I am concerned this could plug into either a USB port or the headphone jack. Thanks for any help that can be offered. Dave David J. Raymond david.raym...@nmt.edu http://kestrel.nmt.edu/~raymond
