[alsa-devel] A plea for help on mixer support for Fast Track Ultra (8R)

[Grant Diffey]

so this works.. (ie compiles and I get controls that do change volumes of
things )

I think there's something whacky with the control map. (I can't seem to send
Ain5 to out 1 and 2 successfully. but I'll test this with felix's original
code.

The Ain's are not capture volumes for this device.

There's 8 "analog ins" and 8 "software returns" (pcm channels) that are
mixed to 8 outputs. all the input gain controls are physical or line +4db
level balanced

Grant.


On Fri, May 20, 2011 at 9:37 PM, Daniel Mack <zonque at gmail.com> wrote:

> On Fri, May 20, 2011 at 1:14 PM, Felix Homann <linuxaudio at showlabor.de>
> wrote:
> > Sorry, here are the first lines:
> >
> > [ 4104.510080] usb 1-3: new high speed USB device using ehci_hcd and
> address
> > 2
> > [ 4104.661745] usb 1-3: config 1 interface 3 altsetting 0 bulk endpoint
> 0x7
> > has invalid maxpacket 8
> > [ 4104.661750] usb 1-3: config 1 interface 3 altsetting 0 bulk endpoint
> 0x87
> > has invalid maxpacket 8
> > [ 4104.824137] BUG: unable to handle kernel NULL pointer dereference at
> > 0000000000000020
> > [ 4104.824147] IP: [<ffffffffa04b0119>]
> snd_usb_mixer_controls+0x49/0x1a0
> > [snd_usb_audio]
>
> Ok, chip->ctrl_intf needs to be initialized. Next try ...
>
>
> Daniel
>