Dear ALSA and Intel HD Audio Developers,

I am reporting an audio issue affecting the headphone output and internal microphone on my new Asus Expertbook B3402FV running Fedora 43 (Kernel 6.17.9).

*Hardware Summary:* - Laptop Model: Asus Expertbook B3402FV - Subsystem ID: 1043:1e03 - Controller: Intel Raptor Lake-P/U/H cAVS [8086:51ca] - Codec: Realtek ALC256 - Kernel: 6.17.9-300.fc43.x86_64

*Problem Details:* 1. Headphone Output (3.5mm Jack): The output is extremely low volume and heavily distorted with noise, even at 100%. Only the loudest parts of the audio track are audible. This strongly suggests the signal is bypassing the headphone amplifier. 2. Hands-free (3.5mm jack) microphone: WORKS correctly. 3. Internal Microphone (Built-in): The internal microphone does NOT work at all. 3. Internal Speakers: Work correctly.

*Troubleshooting Attempted (All failed to resolve the issue):* - Forcing legacy driver: `options snd-intel-dspcfg dsp_driver=1` - Trying known ALC256 model quirks: `model=alc256-asus-mic`, `model=dell-headset-multi`, `model=alc256-asus-headset force_model=1` - Manual pin retasking via `hdajackretask`. - Manual gain adjustments using `hda-verb`.

The issue appears to be a missing or incorrect initialization quirk for the specific Subsystem ID 1043:1e03 that is required to correctly map the DAC to the headphone amplifier and enable the internal mic array.

The full diagnostic report is available here: http://alsa-project.org/db/?f=3847f92b33024055a4ce7d79016aff1715f3a4f9

Thank you for your time and assistance in looking into this specific hardware configuration.

Best regards,

Shahab Ghodsi