* Add Topping E2x2 ucm support
[not found] <alsa-project/alsa-ucm-conf/pr/803@alsa-project.org>
@ 2026-07-01 18:51 ` GitHub pull_request - opened
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From: GitHub pull_request - opened @ 2026-07-01 18:51 UTC (permalink / raw)
To: alsa-devel
alsa-project/alsa-ucm-conf pull request #803 was opened from oxiadenine:
The Topping E2x2 is an USB audio interface from Topping Professional.
The audio interface has two Microphone/Line/Instrument inputs (1L, 2R), two Line outputs (1L, 2R) and one headphone output.
The "problem" with this audio interface is that by default it exposes 6 hardware channels and ALSA recognizes it as a 5.1 audio system, so the files `E2x2.conf` and `E2x2-HiFi.conf` are to create convenient and user friendly profiles.
Also, a `SectionVerb.EnableSequence` has been added to the file `E2x2-HiFi.conf` to disable the exposed hardware channels that are not used.
USB identifier: `152a:8752`
[alsa-info.txt](https://github.com/user-attachments/files/29563789/alsa-info.txt)
I tested it in several applications like Firefox, Telegram, Discord etc, and also I recorded audio from Ardour (DAW), and all is working as expected.
Request URL : https://github.com/alsa-project/alsa-ucm-conf/pull/803
Patch URL : https://github.com/alsa-project/alsa-ucm-conf/pull/803.patch
Repository URL: https://github.com/alsa-project/alsa-ucm-conf
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2026-07-01 18:51 ` Add Topping E2x2 ucm support GitHub pull_request - opened
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