On Mon, Jun 25, 2012 at 10:53:34AM +0200, Gregor Best wrote:
> Hi people,
> 
> I'm trying to get recording from the mic input of my laptop working, but have
> not have success so far. I'm using a thinkpad laptop
> with an azalia device and a pretty run of the mill headset, attached to
> headphone out and microphone in. The headset itself works
> fine on other machines and the microphone input and headphone output of the
> laptop work fine hardware-wise (i.e. tested with another
> operating system). On OpenBSD however, the mic input remains silent. Files
> recorded with aucat -o foo.wav remain silent for the
> entire recording duration, as if the mic was somehow muted. Below is the
> output of mixerctl:> 
>       outputs.spkr_source=dac-0:1
>       outputs.spkr_mute=on
>       outputs.spkr=125,125
>       outputs.spkr_eapd=on
>       outputs.hp_source=dac-0:1
>       outputs.hp_mute=off
>       outputs.hp=155,155
>       outputs.hp_dir=output
>       outputs.hp_boost=off
>       outputs.mic_dir=input-vr80
>       inputs.beep_mute=off
>       inputs.beep=108
>       inputs.mix_source=dac-0:1,mic,hp
>       inputs.mix_dac-0:1=125,125
>       inputs.mix_mic=215,215
>       inputs.mix_hp=125,125
>       record.adc-0:1_source=mic
>       record.adc-0:1_mute=off
>       record.adc-0:1=253,253
>       outputs.hp_sense=plugged
>       outputs.mic_sense=plugged
>       outputs.spkr_muters=hp
>       outputs.master=157,157
>       outputs.master.mute=off
>       outputs.master.slaves=spkr,hp
>       record.volume=255,255
>       record.volume.mute=off
>       record.volume.slaves=adc-0:1
> 

this seems correct at first glance; could you see whether the
recorded file is full of silence (zeros) or noise (numbers close to
zero)?

aucat -o /tmp/foo

and then:

hexdump /tmp/foo |less

noise would mean that there's a level knob to crank, while zeros
would suggest that something in the recording chain is disabled.

> As you can see, all recording related devices are at full volume and no device
> is muted except for the built-in speakers. Is
> recording on azalia devices simply not supported or am I missing something
> really obvious here?

recording is supposed to work. I don't have azalia, so both of us
might be missing something obvious :)

-- Alexandre

Reply via email to