linux-kernel - Problems with a usb sound card

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Date:   Thu, 28 Sep 2017 12:40:56 +0200
From:   niels.misc@...o.dk
To:     linux-kernel@...r.kernel.org
Subject: Problems with a usb sound card

Hi!,

In my dmesg, I get:

[    3.078688] usb 1-1.2.6: new full-speed USB device number 9 using ehci-pci
[    3.185101] usb 1-1.2.6: config 1 has an invalid interface number: 6 but 
max is 5
[    3.185135] usb 1-1.2.6: config 1 has an invalid interface number: 7 but 
max is 5
[    3.185143] usb 1-1.2.6: config 1 has no interface number 3
[    3.185149] usb 1-1.2.6: config 1 has no interface number 5
[    3.188716] usb 1-1.2.6: New USB device found, idVendor=1210, 
idProduct=0009
[    3.188732] usb 1-1.2.6: New USB device strings: Mfr=1, Product=2, 
SerialNumber=0
[    3.188740] usb 1-1.2.6: Product: Lexicon Lambda
[    3.188744] usb 1-1.2.6: Manufacturer: Lexicon

And then later:

[    7.132474] usb 1-1.2.6: 1:1: cannot get freq at ep 0x1
[    7.140529] usb 1-1.2.6: 1:2: cannot get freq at ep 0x1
[    7.149596] usb 1-1.2.6: 2:1: cannot get freq at ep 0x82

The device in question from lsusb:

Bus 001 Device 009: ID 1210:0009 DigiTech

The card lights up on boot, but then turns off again before the boot is 
complete. To get sound working, I have to unplug it and re-plug it. That's 
doable, but annoying. Above is sparse information, please ask for more.

Thanks,
Niels