Am Mo, 11. Nov 2024, um 18:00, schrieb Sasha Levin:

This is a note to let you know that I've just added the patch titled

ALSA: usb-audio: Support jack detection on Dell dock

to the 5.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: alsa-usb-audio-support-jack-detection-on-dell-dock.patch and it can be found in the queue-5.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

I think it's fine to add the WD19 patch (upstream commit 4413665dd6c5) to newer stable trees which already have the WD15 patch (upstream commit 4b8ea38fabab), as Greg has already done. That patch just adds a new USB ID for an already existing feature.

But I'm not sure if it's a good idea to also add the WD15 patch to the older stable trees. This is a feature, not a bug fix, and the device works fine without it. The only thing is that you may have to manually select the audio input and output.

And, the jack detection feature only works (with both WD15 and WD19) if you also have alsa-ucm-conf at least 1.2.7.2 installed, which was released 2022-07-08 [1]. All these older kernels were released before that. I doubt that there are many people who have a new enough alsa-ucm-conf installed, and simultaneously one of these old kernels, and would benefit from this.

Jan

[1] https://github.com/alsa-project/alsa-ucm-conf/releases/tag/v1.2.7.2