Re: How to install usb Maudio Micro "Couldn't open device, some information will be missing "

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Sun, May 26, 2013 at 13:29:33 +0700, pukul sesuatu wrote:
> Hi All , how to install maudio micro on raspberry pi, I am try to
> install and googling for found some information about installing
> Maudio micro on raspberry pi but very little information about that.
> so I need help from you guys how to install it?
> this my ouput on terminal . thanks you
> ===================================
> lsusb -v -d 0763:201a
> 
> 
> Bus 001 Device 012: ID 0763:201a Midiman M-Audio Micro
> Couldn't open device, some information will be missing

That is a permission error from lsusb, run lsusb with sudo to get rid of
it. I don't think it will affect the lsusb output in this case.

> Device Descriptor:
>   bDeviceClass          255 Vendor Specific Class

The device needs a quirk in order to be recognized by snd_usb_audio, but the
rest of the descriptors look standard.

You can try to add an entry like this in quirks-table.h

{
	USB_DEVICE(0x0763, 0x201a),
	.driver_info = (unsigned long) & (const struct snd_usb_audio_quirk) {
		/* .vendor_name = "M-Audio", */
		/* .product_name = "Micro", */
		.ifnum = QUIRK_ANY_INTERFACE,
		.type = QUIRK_COMPOSITE,
		.data = & (const struct snd_usb_audio_quirk[]) {
			{
				/* Control device */
				.ifnum = 0,
				.type = QUIRK_IGNORE_INTERFACE
			},
			{
				.ifnum = 1,
				.type = QUIRK_AUDIO_STANDARD_INTERFACE
			},
			{
				.ifnum = 2,
				.type = QUIRK_AUDIO_STANDARD_INTERFACE
			},
			{
				.ifnum = -1
			}
		}
	}
},

------------------------------------------------------------------------------
Try New Relic Now & We'll Send You this Cool Shirt
New Relic is the only SaaS-based application performance monitoring service 
that delivers powerful full stack analytics. Optimize and monitor your
browser, app, & servers with just a few lines of code. Try New Relic
and get this awesome Nerd Life shirt! http://p.sf.net/sfu/newrelic_d2d_may
_______________________________________________
Alsa-user mailing list
Alsa-user@xxxxxxxxxxxxxxxxxxxxx
https://lists.sourceforge.net/lists/listinfo/alsa-user




[Index of Archives]     [ALSA Devel]     [Linux Audio Users]     [Fedora Users]     [Fedora Desktop]     [Fedora SELinux]     [Big List of Linux Books]     [Yosemite News]     [Yosemite Photos]     [KDE Users]     [Fedora Tools]

  Powered by Linux