From mboxrd@z Thu Jan 1 00:00:00 1970 From: Clemens Ladisch Subject: Re: snd-usb-audio issues?? Date: Mon, 14 Apr 2014 14:33:03 +0200 Message-ID: <534BD57F.6000006@ladisch.de> References: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from dehamd003.servertools24.de (dehamd003.servertools24.de [31.47.254.18]) by alsa0.perex.cz (Postfix) with ESMTP id 0A99326164C for ; Mon, 14 Apr 2014 14:33:04 +0200 (CEST) In-Reply-To: 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: Richard Storer , alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org Richard Storer wrote: > My first issue is for some reason booting Linux with my device already > attached to the USB port produces no audio output, however capture is > functioning. > I've tried mute, unmute via alsamixer but it seems like the amplifier > circuit inside hasn't turned itself on properly. > The cure for this (and 100% reproducible) would be to unplug / replug > the USB cable or simply connect to USB after Linux has fully loaded. Are there any mixer controls that have a different value in these situations? (See the output of "amixer scontents" for your device.) > While Line-In capture does function on this device the signal levels > are extremely low. > Unfortunately there is no Line-In mixer control for my device What is the output of "amixer scontents" for your device? Regards, Clemens