On Wed, Jan 07, 2026 at 03:09:10PM +0100, Simone Flavio Paris wrote:

I am testing the latest experimental kernels on the Lenovo ThinkPad T14s Gen 6 (Snapdragon X Elite).

I have encountered a specific issue with the audio subsystem: while the DSP and ALSA stack appear fully functional (firmware loads, streams are processed without errors), there is no analog output on speakers or headphones.

I have performed extensive diagnostics and manual mixer path configurations to rule out userspace/UCM issues. Below is a detailed technical report of the current status, routing attempts, and logs.

I hope this information helps in refining the machine driver or topology profiles for this specific device. I am available to test patches if needed.

[Technical Report]

Target Hardware: Lenovo ThinkPad T14s Gen 6 (21N1) - Snapdragon X Elite (X1E80100) OS: Ubuntu 25.10 (Debian-based) Kernel: 6.17.0-8-generic #8-Ubuntu SMP PREEMPT_DYNAMIC aarch64

You need to report this to your distro as this is not a mainline issue.

IIUC, Ubuntu disables audio by default until you pass a kernel parameter due to the lack of speaker protection.

Johan