Re: [LAU] usb-audio-2.0 / class compliance question

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To: <linux-audio-user@...>
Date: Tuesday, October 2, 2012 - 2:02 am

Le 01/10/2012 22:15, Florian Hanisch a écrit :

As outputed in ths log, it appears the drivers fails to manage the sound
card: probe of 1-1:1.0 failed with error -5
My advice would be to get help from the ALSA men.
http://alsa-project.org/main/index.php/Help_To_Debug

RME Fireface UCX has not been tagged as supported by the alsa project,
i am sure they would be interested in having some debug info.

>

Maybe the snd-usb-audio driver has some parameters that would help to
obtain more precise debug information. If i type modinfo snd-usb-audio,
i can see:

parm: index:Index value for the USB audio adapter. (array of int)
parm: id:ID string for the USB audio adapter. (array of charp)
parm: enable:Enable USB audio adapter. (array of bool)
parm: vid:Vendor ID for the USB audio device. (array of int)
parm: pid:Product ID for the USB audio device. (array of int)
parm: nrpacks:Max. number of packets per URB. (int)
parm: async_unlink:Use async unlink mode. (bool)
parm: device_setup:Specific device setup (if needed). (array
of int)
parm: ignore_ctl_error:Ignore errors from USB controller for
mixer interfaces. (bool)

To test a param with the driver, unload it (modprobe -r), and manually
reload it with parameters in the command-line, using modprobe.

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Messages in current thread:
[LAU] usb-audio-2.0 / class compliance question, Florian Hanisch, (Mon Oct 1, 8:15 pm)
Re: [LAU] usb-audio-2.0 / class compliance question, ben, (Tue Oct 2, 2:02 am)