Audio speakers not working on HP EliteBook 8 G1i (Intel Lunar Lake) - ALC245 / CS35L56

[frododellacontea-hash]

Hello,

I am experiencing an issue where internal speakers are silent on my new HP EliteBook 8 G1i 16 inch (Next Gen AI PC). Headphones via 3.5mm jack work perfectly, but internal speakers remain silent despite being detected.

Hardware Details:

• Model: HP EliteBook 8 G1i 16 inch Notebook
• CPU: Intel Lunar Lake
• Audio Codec: Realtek ALC245
• Amplifiers: 2x Cirrus Logic CS35L56 (detected on SPI bus)
• OS: Fedora 43 (Forty Three) - Kernel 6.18.8
• Firmware: SOF firmware version 2.14.1.1

Symptoms:

• Headphones work.
• Speakers are detected but speaker_outs is reported as 0 in ALSA configuration.
• Tried kernel parameters like alc245-hp-x360 and alc285-hp-amp without success.

Alsa-info log: I have attached the full log, but the key IDs are:
Codec: Realtek ALC245
Subsystem Id: 0x103c8e2c
ACPI HID for Amps: CSC3556

Could you please help me identify if a specific quirk is needed for this model or if there is a missing topology file?

alsa-info.txt

Thank you.

[charleskeepax]

I suspect this is the same issue as: #5621

[frododellacontea-hash]

I checked dmesg for 'cs35l' and it returns no output, even though alsa-info detects CSC3556 devices. It seems the SOF driver is not even attempting to bind the Cirrus amplifiers.

[rfvirgil]

@frododellacontea-hash

It seems the SOF driver is not even attempting to bind the Cirrus amplifiers.

This laptop isn't SOF. It is HDA. It's the Realtek HDA driver that binds the amps.
The known issue on this laptop is that HDA driver cannot bind the amps because of an ACPI bug that prevents the SPI bus from probing the amp drivers.

Please install acpica-tools package and run this:

sudo acpidump >acpidump
acpixtract acpidump
iasl -d dsdt.dat
grep -B10 -A10 cs-gpios dsdt.dsl

And post the output of the grep here.