From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ionica Bizau Subject: Re: External sound card issue Date: Sun, 26 Jan 2014 11:45:45 -0800 (PST) Message-ID: <1390765545.16173.YahooMailNeo@web162301.mail.bf1.yahoo.com> References: <52DD1A66.9050909@ladisch.de> <1390398693.24097.YahooMailNeo@web162304.mail.bf1.yahoo.com> <52E54D7B.3040408@ladisch.de> Reply-To: Ionica Bizau Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Return-path: Received: from nm43.bullet.mail.ne1.yahoo.com (nm43.bullet.mail.ne1.yahoo.com [98.138.120.50]) by alsa0.perex.cz (Postfix) with SMTP id 4FAE4261A0E for ; Sun, 26 Jan 2014 20:48:29 +0100 (CET) In-Reply-To: <52E54D7B.3040408@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: Raymond Yau , ALSA Development Mailing List List-Id: alsa-devel@alsa-project.org I will try them. Is this a bug in the hardware device or in the Linux drive= r? If this is in the Linux driver, can this be fixed? Cheers On Sunday, January 26, 2014 8:01 PM, Clemens Ladisch w= rote: = Ionica Bizau wrote: > $ amixer -c1 cget name=3D'PCM Capture Source' > numid=3D7,iface=3DMIXER,name=3D'PCM Capture Source' >=A0 ; type=3DENUMERATED,access=3Drw------,values=3D1,items=3D2 >=A0 ; Item #0 'Unit 22' >=A0 ; Item #1 'Unit 22' > amixer: Control hw:1 element read error: Broken pipe The device's firmware does not allow reading this mixer control for some reason; this is probably a bug. Please try the following commands: =A0 rmmod snd-usb-audio =A0 modprobe snd-usb-audio ignore_ctl_error=3D1 This makes the driver ignore errors, but cannot prevent the errors from happening in the first place.=A0 Please check if you get the desired effect when you write this control. Regards, Clemens