From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nixbits Admin Subject: Re: Kernel: snd-usb-audio: probe of 2-2:1.0 failed with error -5 Date: Tue, 29 Nov 2011 19:18:08 -0500 Message-ID: <4ED57640.5050804@nixbits.org> References: <4ED4D58D.60109@nixbits.org> <4ED51463.6050005@gmail.com> Reply-To: admin@nixbits.org Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail-qy0-f179.google.com (mail-qy0-f179.google.com [209.85.216.179]) by alsa0.perex.cz (Postfix) with ESMTP id 0444E103983 for ; Wed, 30 Nov 2011 01:18:17 +0100 (CET) Received: by qyk2 with SMTP id 2so15582qyk.38 for ; Tue, 29 Nov 2011 16:18:15 -0800 (PST) In-Reply-To: <4ED51463.6050005@gmail.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: alsa-devel-bounces@alsa-project.org Errors-To: alsa-devel-bounces@alsa-project.org To: Daniel Mack Cc: Takashi Iwai , alsa-devel@alsa-project.org, Linus Torvalds List-Id: alsa-devel@alsa-project.org I have included the output of lsusb -v and updated the topic. https://forums.gentoo.org/viewtopic-p-6886404.html#6886404 >> Nov 29 07:21:21 kernel: skipping empty audio interface (v1) >> Nov 29 07:21:21 kernel: snd-usb-audio: probe of 2-3:1.0 failed with error -5 H. On 11/29/2011 12:20 PM, Daniel Mack wrote: > On 11/29/2011 05:58 PM, Linus Torvalds wrote: >> On Tue, Nov 29, 2011 at 4:52 AM, Nixbits Admin wrote: >>> >>> While knowing that your time is precious and without wanting to making you >>> spend more than what you may be able to spare for my problem; i would like >>> ask you if you could take a look at this issue. >>> >>> https://forums.gentoo.org/viewtopic-p-6885908.html#6885908 >>> >>> snd-usb-audio: probe of 2-2:1.0 failed with error -5 >> >> This is related to the line above it: >> >> Nov 29 07:21:21 kernel: skipping empty audio interface (v1) >> Nov 29 07:21:21 kernel: snd-usb-audio: probe of 2-3:1.0 failed with error -5 >> >> which in turn is because of a zero "bInCollection" value in the device >> control header. I'm adding some sound people to the cc, in case >> anybody has more clues about what's wrong with that particular device >> - I don't personally have any real clue about usb audio. > > As the dump in the forum post doesn't decode any of the USB audio > specific headers, we'd need to see the output of "lsusb -v" with that > device connected. > > If the driver bails out at this point, there's something wrong with the > descriptors, or the interface has no audio support at all (which would > be odd as it could have been omitted entirely in the first place). > > We might have to add a quirk for the device, let's see. > > > Daniel >