From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ionica Bizau Subject: Re: External sound card issue Date: Mon, 27 Jan 2014 04:14:03 -0800 (PST) Message-ID: <1390824843.46971.YahooMailNeo@web162301.mail.bf1.yahoo.com> References: <52DD1A66.9050909@ladisch.de> <1390398693.24097.YahooMailNeo@web162304.mail.bf1.yahoo.com> <52E54D7B.3040408@ladisch.de> <1390765545.16173.YahooMailNeo@web162301.mail.bf1.yahoo.com> 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 nm1-vm1.bullet.mail.bf1.yahoo.com (nm1-vm1.bullet.mail.bf1.yahoo.com [98.139.213.163]) by alsa0.perex.cz (Postfix) with ESMTP id C8080261B1E for ; Mon, 27 Jan 2014 13:14:04 +0100 (CET) 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: Takashi Iwai Cc: ALSA Development Mailing List List-Id: alsa-devel@alsa-project.org When I run the first command: $ rmmod snd-usb-audio rmmod: ERROR: Module snd_usb_audio is in use On Monday, January 27, 2014 10:57 AM, Takashi Iwai wrote: = At Sun, 26 Jan 2014 11:45:45 -0800 (PST), Ionica Bizau wrote: > = > I will try them. Is this a bug in the hardware device or in the Linux dri= ver? It's a hardware bug. > If this is in the Linux driver, can this be fixed? We have tons of workarounds in the driver for such broken devices. This will be just yet another one. Takashi > = > Cheers > = > = > = > On Sunday, January 26, 2014 8:01 PM, Clemens Ladisch = wrote: >=A0 = > Ionica Bizau wrote: > > $ amixer -c1 cget name=3D'PCM Capture Source' > > numid=3D7,iface=3DMIXER,name=3D'PCM Capture Source' > >=A0=A0 ; type=3DENUMERATED,access=3Drw------,values=3D1,items=3D2 > >=A0=A0 ; Item #0 'Unit 22' > >=A0=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 > _______________________________________________ > Alsa-devel mailing list > Alsa-devel@alsa-project.org > http://mailman.alsa-project.org/mailman/listinfo/alsa-devel > =