xtr3m3 skrev:Det i första länken funkar inte åt mig tyvärr.
Den andra är ju på tyska och min tyska är lite rostig

Saxat från tyska-engelska med google translate:
USB audio devices
USB sound cards, which include webcams with microphone or USB headset, are by the kernel module snd-usb-audio addressed. It has now more USB audio devices that are connected to the computer, it happens that the order of the devices changes with a renewed boot. The above solutions are not possible because there is always dealing with the same kernel module. But even with USB devices, you can specify the order.
For this purpose we must first identify the IDs of the USB devices. The easiest way to do this by connecting only the relevant devices to the USB ports (other USB devices so aussteckt briefly) and then the command
lsusb
executes [3]. For example, it will output something like
Bus 008 Device 001: ID 0000:0000
Bus 007 Device 002: ID 0d8c: 000c C-Media Electronics, Inc. Audio Adapter
Bus 003 Device 002: ID 0471:0311 Philips PCVC740K ToUcam Pro [pwc]
Here are two devices (a webcam and a headset) connected to the computer. The details behind "ID" stands for the USB ID. This consists of the VID ("vendor-id") and PGD ("product-id") in the format "vid: pid" together.
The information thus obtained has to enter it in the file / etc / modprobe.d / snd-usb-audio. Possibly the file does not exist, then you can create it with any editor or edit [6]. Here you wear now as Example
# General
options snd-usb-audio index = {a}, {b} {vid = 0x VID1}, {0x} vid2 pid = 0x {PID1}, {0x} pid2
# Example
options snd-usb-audio index = 2,3 vid = 0x0d8c, 0x0471 pid = 0x000c, 0x0311
a. The values in curly braces {} are adjusted in each case. In the example, it is considered that in the computer already has two audio devices (sound card and a TV card) are present. Therefore, the external card should be classified on the option index = 2.3 behind. From the next restart should the USB audio devices retain their order.