Bug 218862

Summary:	[Samsung Galaxy Book4 Pro - 940XGK] No sound from internal speakers
Product:	Drivers	Reporter:	Devin Gunay (devingunay)
Component:	Sound(ALSA)	Assignee:	Jaroslav Kysela (perex)
Status:	NEW ---
Severity:	high	CC:	barbaragneal, contact, daniel_nora, devingunay, kindrabernier, nowazhu, weslleyalmeida6
Priority:	P3
Hardware:	Intel
OS:	Linux
Kernel Version:		Subsystem:
Regression:	No	Bisected commit-id:
Attachments:	Dump of the linux audio codec Output of RtHDDump.exe Output of alsa-info.sh

Description Devin Gunay 2024-05-20 07:35:31 UTC

Created attachment 306310 [details]
Dump of the linux audio codec

I recently installed EndeavourOS on a Samsung Galaxy Book4 Pro 14" and immediately noticed that the internal speakers don't produce sound. The waveform monitor in pavucontrol shows movement during sound playback.

I have a thread on the Sound Open Firmware issue tracker documenting my progress troubleshooting the issue: https://github.com/thesofproject/linux/issues/5002#issuecomment-2119686288

I got as far as attempting to reverse engineer the pin configuration and HDA verbs for the Realtek ALC298 on the board. I have a GitHub repository with my findings, but I'll post the output of RtHDDump.exe as well as the linux codec dump.

My notes on trying the RE process myself: https://github.com/dgunay/galaxy-book4-pro-reverse-engineering

I've followed various other threads here, the Manjaro forums, and the SOF issue tracker for similar previous generation models but the advice, kernel parameters, HDA verbs, etc therein didn't work unfortunately.

Let me know if any other information would be useful, or if I should post this elsewhere. More attachments on the way.

I will be returning the device so I unfortunately only have the rest of the return window to try any suggestions.

Comment 1 Devin Gunay 2024-05-20 07:36:14 UTC

Created attachment 306311 [details]
Output of RtHDDump.exe

Comment 2 Devin Gunay 2024-05-20 07:38:31 UTC

Created attachment 306312 [details]
Output of alsa-info.sh

Comment 3 Barbara Neal 2025-01-22 09:46:33 UTC Comment hidden (spam)

(In reply to Devin Gunay from comment #0)
> Created attachment 306310 [details]
> Dump of the linux audio codec
> 
> I recently installed EndeavourOS on a Samsung Galaxy Book4 Pro 14" and
> immediately noticed that the internal speakers don't produce sound. The
> waveform monitor in pavucontrol shows movement during sound playback.
> 
> I have a thread on the Sound Open Firmware issue tracker documenting my
> progress troubleshooting the issue:
> https://github.com/thesofproject/linux/issues/5002#issuecomment-2119686288
> https://101games.io/water-sort
> 
> I got as far as attempting to reverse engineer the pin configuration and HDA
> verbs for the Realtek ALC298 on the board. I have a GitHub repository with
> my findings, but I'll post the output of RtHDDump.exe as well as the linux
> codec dump.
> 
> My notes on trying the RE process myself:
> https://github.com/dgunay/galaxy-book4-pro-reverse-engineering
> 
> I've followed various other threads here, the Manjaro forums, and the SOF
> issue tracker for similar previous generation models but the advice, kernel
> parameters, HDA verbs, etc therein didn't work unfortunately.
> 
> Let me know if any other information would be useful, or if I should post
> this elsewhere. More attachments on the way.
> 
> I will be returning the device so I unfortunately only have the rest of the
> return window to try any suggestions.

Comment 4 Roy Gilley 2025-04-22 07:41:35 UTC Comment hidden (spam)

(In reply to Devin Gunay from comment #0)
> Created attachment 306310 [details]
> Dump of the linux audio codec
> 
> I recently installed EndeavourOS on a Samsung Galaxy Book4 Pro 14" and
> immediately noticed that the internal speakers don't produce sound. The
> waveform monitor in pavucontrol shows movement during sound playback.
> 
> I have a thread on the Sound Open Firmware issue tracker documenting my
> progress troubleshooting the issue:
> https://github.com/thesofproject/linux/issues/5002#issuecomment-2119686288
> https://flappydunk.io
> 
> I got as far as attempting to reverse engineer the pin configuration and HDA
> verbs for the Realtek ALC298 on the board. I have a GitHub repository with
> my findings, but I'll post the output of RtHDDump.exe as well as the linux
> codec dump.
> 
> My notes on trying the RE process myself:
> https://github.com/dgunay/galaxy-book4-pro-reverse-engineering
> 
> I've followed various other threads here, the Manjaro forums, and the SOF
> issue tracker for similar previous generation models but the advice, kernel
> parameters, HDA verbs, etc therein didn't work unfortunately.
> 
> Let me know if any other information would be useful, or if I should post
> this elsewhere. More attachments on the way.
> 
> I will be returning the device so I unfortunately only have the rest of the
> return window to try any suggestions.

Nice info