[BUG] Woofer speakers do not sound on Dell XPS 17 9710

[JuanFcoMiranda]

They work fine on Windows, but it seems they are not working on linux because they sound quieter.

To Reproduce
Play any videos from youtube or any mp3 file.

Reproduction Rate
All the time.

Expected behavior
Both woofer speakers sound as they do on Windows.

Impact
The laptop sounds quieter on linux.

Environment
Kernel: 6.15.4
SOF: 2025.05-1
Name of the topology file
Topology: intel/sof-tplg/sof-tgl-rt711-rt1308-rt715.tplg
Name of the platform(s) on which the bug is observed.
Platform: Dell XPS 17 9710
Bios version: 1.34.0

[bardliao]

@JuanFcoMiranda Can you share the output file of sudo alsa-info? @shumingfan FYI

[JuanFcoMiranda]

@JuanFcoMiranda Can you share the output file of sudo alsa-info? @shumingfan FYI

Sure, this is the output for that command:

alsa-info.txt

[shumingfan]

@JuanFcoMiranda Could you dump the registers while the playback?
$ cat /sys/kernel/debug/regmap/sdw:0:1:025d:1308:00/registers
$ cat /sys/kernel/debug/regmap/sdw:0:2:025d:1308:00/registers

[JuanFcoMiranda]

Yes, sure. Here they are:

channel1.txt

channel2.txt

[shumingfan]

@JuanFcoMiranda
I have the same machine. I updated the BIOS and used the same kernel version.
I can't see the problem.
Does this issue happen whether rebooting from Windows or cold-booting from Linux?

alsa-info-bios-v1.34.0.txt

[JuanFcoMiranda]

No, it happens all the time, no matters if it's a cold-booting or rebooting from Windows, the sound is pretty different on Linux and on Windows, it seems that the bass sounds are not working as it should on Linux, or at least, it's my perception.

[shumingfan]

May I confirm again? Does the issue belong to sound different or no sound?

[JuanFcoMiranda]

May I confirm again? Does the issue belong to sound different or no sound?

There is sound, but it seems the woofers are not working properly and only the tweeters are working, I'm not sure if I'm explaining myself well.

[shumingfan]

@JuanFcoMiranda Okay. I think it is expected. Windows has the sound effect algorithm running in the DSP, but Linux doesn't.