[Bug 2141382] [NEW] Lunar Lake headphone volume level much lower after upgrading to 6.17.0-14

Public bug reported:

I have a Lunar Lake laptop, Asus Zenbook UX5406SA with a sound device:

00:1f.3 Multimedia audio controller: Intel Corporation Lunar Lake-M HD
Audio Controller (rev 10)

OS: Ubuntu 25.10

After upgrading to kernel 6.17.0-14, the headphone volume level is much
lower, compared to kernel 6.17.0-12. I used it on about 30% on
6.17.0-12, with 6.17.0-14 100% produces the same loudness.

** Affects: linux (Ubuntu)
Importance: Undecided
Status: New

--
You received this bug notification because you are subscribed to linux
in Ubuntu.
Matching subscriptions: Bgg, Bmail, Nb
https://bugs.launchpad.net/bugs/2141382

Title:
Lunar Lake headphone volume level much lower after upgrading to
6.17.0-14

Status in linux package in Ubuntu:
New

Bug description:
I have a Lunar Lake laptop, Asus Zenbook UX5406SA with a sound device:

00:1f.3 Multimedia audio controller: Intel Corporation Lunar Lake-M HD
Audio Controller (rev 10)

OS: Ubuntu 25.10

After upgrading to kernel 6.17.0-14, the headphone volume level is
much lower, compared to kernel 6.17.0-12. I used it on about 30% on
6.17.0-12, with 6.17.0-14 100% produces the same loudness.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2141382/+subscriptions