No bass on Dell XPS 9510 (linux-6.1.12-arch1-1)

Hey folks, I guess this is post #3 on the subject! The subwooder on my Dell XPS 9510 doesn’t work on Arch (kernel 6.1.12-arch1-1). I’ve checked out older posts but couldn’t find a solution.

Hoping that the newer 6.x.x kernels would solve the issue was also all in vain. Any suggestions?

1st post Sep 2021 – No bass on Dell XPS 9510 – was solved by kernel patch
[PATCH] ALSA: hda/realtek: Enable 4-speaker output for Dell XPS 15 9510 laptop - Kristin Paget
Kernel patch is still present in latest kernels

2nd post Dec 2021 – No bass on Dell XPS 9510 pt. 2 – was reported to kernel developers

215233 – Subwoofer not working for Dell XPS 15 9510
Altor 2022-08-26 12:40:51 UTC

For anyone else still wondering about this issue, seems like either Dell or Realtek included a high-pass filter at 250Hz for this device as a measure to protect the speakers.

See the conversation at:
[BUG] No sound below 100Hz in XPS 15 · Issue #3729 · thesofproject/linux · GitHub

There seems to be no solution other than adjusting the filter.
I guess it won’t be easy to get the sound working properly on this one…

Sometimes it is really tricky to support special hardware with Linux.