[alsa-devel] Small Regression in midi for M-Audio Fast Track Ultra.

[Grant Diffey]

So I finally got around to building a new kernel today.

and after rebooting I get:

[  131.832084] usb 2-1: new high speed USB device using ehci_hcd and address
3
[  131.969795] usb 2-1: config 1 interface 3 altsetting 0 bulk endpoint 0x7
has invalid maxpacket 8
[  131.969800] usb 2-1: config 1 interface 3 altsetting 0 bulk endpoint 0x87
has invalid maxpacket 8
[  131.970886] usb 2-1: New USB device found, idVendor=0763, idProduct=2080
[  131.970890] usb 2-1: New USB device strings: Mfr=1, Product=2,
SerialNumber=0
[  131.970892] usb 2-1: Product: Fast Track Ultra
[  131.970894] usb 2-1: Manufacturer: M-Audio
[  132.060121] usbcore: registered new interface driver snd-usb-audio
nevyn at cetacea:~$ amidi -l
Dir Device    Name
IO  hw:1,0,0  Fast Track Ultra MIDI 1

Which is excellent and solves my problem.

now to find and apply that mixer patch.

Grant.


On Thu, Apr 21, 2011 at 6:25 AM, Felix Homann <linuxaudio at showlabor.de>wrote:

> Sorry, Clemens,
>
> I must have messed around with too many Alsa versions on my machine, again.
> Your suggested fix _does_ fix the issue!
>
> Would you mind adding this to the git tree? Or shall I prepare a patch?
>
>
> Am 18.04.2011 11:16, schrieb Clemens Ladisch:
>
>> Try replacing the comment with:
>>>                        {
>>>                                .iface = 3,
>>>                                .type = QUIRK_MIDI_STANDARD_INTERFACE
>>>                        },
>>>
>>>
> In the meantime I started a bisect session on the mainline kernel. The
> cause of this issue lies in the refactoring done last year. I couldn't
> identify the exact patch introducing the regression, though, since starting
> at step 10 the kernels would not boot. See the corresponding git bisect log
> (the last revision is the first one that would not boot).
>
> Regards,
>
> Felix
>