[alsa-devel] Kernel: snd-usb-audio: probe of 2-2:1.0 failed with error -5

[Nixbits Admin]

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<admin at nixbits.org>  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
>