Rename USB Sound device

Question

I have raspberry pi running raspbian that has 3 sound devices plugged in via USB. I successfully renamed the card ids for alsa based on the USB port with this rule:

SUBSYSTEM!="sound", GOTO="my_usb_audio_end"
ACTION!="add", GOTO="my_usb_audio_end"

DEVPATH=="/devices/pci0000:00/0000:00:14.0/usb1/1-9/1-9.2/1-9.2:1.0/sound/card?", ATTR{id}="Audio_Channel_1"

LABEL="my_usb_audio_end"

(plase not that the USB path may be off, ive done this on my computer for now not on the raspberry).

What I would like to change now too is the device name reported by lsusb. Currently this is:

USB PnP Sound Device, USB Audio

How can I also rename the device name with udev?

Possible duplicate of Is there a way to change device names in /dev directory? — Daniele Santi, Sep 06 '18 at 18:37
No its not. I dont want to rename devices in dev, i want to change the usb descriptor. — Nidhoegger, Sep 08 '18 at 07:38

score 2 · Accepted Answer · answered Sep 06 '18 at 19:09

2

You can't change the output of lsusb with udev.

Actually, you can't change the output of lsusb at all, the names are reported by the USB devices themselves.

answered Sep 06 '18 at 19:09

RalfFriedl

8,981

score 0 · Answer 2 · answered Sep 12 '20 at 16:26

While lsusb only shows the device name by vendor and model ID (on my system it is in /usr/lib/udev/hwdb.d/*usb*) where you potentially could change device names, you actually changed ALSA's card ID.

You can check it with aplay -L or /proc/asound/cards and use it as a device name.

See https://www.alsa-project.org/wiki/Changing_card_IDs_with_udev

Rename USB Sound device

2 Answers2