From mboxrd@z Thu Jan  1 00:00:00 1970
From: Clemens Ladisch <clemens@ladisch.de>
Subject: Re: Grey noise with HDA Intel PCH
Date: Thu, 14 Aug 2014 12:20:11 +0200
Message-ID: <53EC8D5B.5020709@ladisch.de>
References: <20140814114003.7b0019f3@saldaea>
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To: Julian Wollrath <jwollrath@web.de>, alsa-devel@alsa-project.org
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Julian Wollrath wrote:
> when having my soundcard not muted, I get to hear grey noise over the
> speakers or over the headphone
>
> Simple mixer control 'Master',0
>   Mono: Playback 19 [22%] [-51.00dB] [on]

This is rather low.  A lower signal level implies a worse signal-to-
noise ratio.

> Simple mixer control 'Mic',0
>   Front Left: Playback 0 [0%] [-34.50dB] [on]
>   Front Right: Playback 0 [0%] [-34.50dB] [on]

This plays any noise from the mic input.


Regards,
Clemens