From mboxrd@z Thu Jan 1 00:00:00 1970 From: Julian Wollrath Subject: Re: Grey noise with HDA Intel PCH Date: Thu, 14 Aug 2014 12:46:16 +0200 Message-ID: <20140814124616.65991d7e@saldaea> References: <20140814114003.7b0019f3@saldaea> <53EC8D5B.5020709@ladisch.de> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mout.web.de (mout.web.de [212.227.15.3]) by alsa0.perex.cz (Postfix) with ESMTP id 4F7DF2615F7 for ; Thu, 14 Aug 2014 12:46:33 +0200 (CEST) In-Reply-To: <53EC8D5B.5020709@ladisch.de> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org To: Clemens Ladisch Cc: alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org Am Thu, 14 Aug 2014 12:20:11 +0200 schrieb Clemens Ladisch : > 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. It is also hearable, with the volume turned up higher and when nothing is playing. > > 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. Turning it off makes no difference since capture is turned off anyway: > > Simple mixer control 'Capture',0 > > Capabilities: cvolume cswitch > > Capture channels: Front Left - Front Right > > Limits: Capture 0 - 63 > > Front Left: Capture 63 [100%] [30.00dB] [off] > > Front Right: Capture 63 [100%] [30.00dB] [off] Cheers, Julian