Public bug reported:
Issue Description:
Internal speakers are completely silent on an ASUS ExpertCenter laptop with
Intel Raptor Lake platform using the Sound Open Firmware (SOF) driver and
Realtek ALC256 codec.
Hardware & System Info:
- Model: ASUS ExpertCenter (Intel Raptor Lake)
- Audio Codec: Realtek ALC256
- OS: Ubuntu Linux 26.04
- Sound Server: PipeWire / WirePlumber
- Low-level driver: snd-sof-pci-intel-tgl
Verification & Troubleshooting Performed:
1. Hardware functional test: Audio and speakers operate correctly during BIOS
hardware diagnostics (rules out physical hardware failure).
2. Volume / Mute checks: ALSA Mixer (`alsamixer`) and PipeWire show Master,
Speaker, and PCM channels unmuted (`00`) and set to appropriate volume levels.
3. Troubleshooting attempts:
- Modifying module parameters (`options snd-intel-dspcfg dsp_driver=1`)
- Disabling Fast Boot in BIOS
- Updating to the latest mainline kernel
- Overriding pin configuration via `hdajackretask`
None of these attempts produced audio output through the internal speakers.
Diagnostic Log Attached:
I have attached the full diagnostic output generated by `alsa-info.sh`
(containing ACPI tables, pin configurations, and SOF driver dmesg logs).
Request:
Please review the attached alsa-info log to include the proper pin-mapping
quirk/patch for this ASUS ExpertCenter model in future kernel/firmware updates.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2171268
Title:
[ASUS ExpertCenter / Raptor Lake] Internal speakers produce no sound
(Realtek ALC256 / SOF driver)
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