[alsa-devel] Noise on snd-hda-intel

[Raymond Yau]

2011/6/23 Sune Mølgaard <sune at molgaard.org>:
> Takashi Iwai wrote:
>> At Wed, 22 Jun 2011 10:34:02 +0200,
>> Sune Mølgaard wrote:
>>>
>>> Simple mixer control 'Front Mic',0
>>>    Capabilities: pvolume pswitch penum
>>>    Playback channels: Front Left - Front Right
>>>    Limits: Playback 0 - 31
>>>    Mono:
>>>    Front Left: Playback 22 [71%] [-1.50dB] [on]
>>>    Front Right: Playback 22 [71%] [-1.50dB] [on]
>>
>> Try to mute this.
>
> Thank you for the suggestion, but it didn't help. At least not as I
> tried to mute or downplay it in alsamixer - should I try some obscure
> command to amixer?
>
> Best regards,
>
> Sune
>


Does the noise appear when you increase  "Front Mic Boost" control
from 0dB to 30 dB ?

arecord -v -f CD -Dhw:CARD=Intel | aplay -v -Dhw:CARD=Intel