Re: [REGRESSION] Distorted sound on Acer Aspire A115-31 laptop

[Takashi Iwai <tiwai@suse.de>]

On Sun, 15 Dec 2024 14:06:38 +0100,
Evgeny Kapun wrote:
> 
> I am using an Acer Aspire A115-31 laptop. When running newer kernel
> versions, sound played through headphones is distorted, but when
> running older versions, it is not.
> 
> Kernel version: Linux version 6.12.5 (user@hostname) (gcc (Debian
> 14.2.0-8) 14.2.0, GNU ld (GNU Binutils for Debian) 2.43.50.20241210)
> #1 SMP PREEMPT_DYNAMIC Sun Dec 15 05:09:16 IST 2024
> Operating System: Debian GNU/Linux trixie/sid
> 
> No special actions are needed to reproduce the issue. The sound is
> distorted all the time, and it doesn't depend on anything besides
> using an affected kernel version.
> 
> It seems to be caused by commit
> 34ab5bbc6e82214d7f7393eba26d164b303ebb4e (ALSA: hda/realtek - Add
> Headset Mic supported Acer NB platform). Indeed, if I remove the entry
> that this commit adds, the issue disappears.
> 
> lspci output for the device in question:
> 
> 00:0e.0 Multimedia audio controller [0401]: Intel Corporation
> Celeron/Pentium Silver Processor High Definition Audio [8086:3198]
> (rev 06)
>     Subsystem: Acer Incorporated [ALI] Device [1025:1360]
>     Flags: bus master, fast devsel, latency 0, IRQ 130
>     Memory at a1214000 (64-bit, non-prefetchable) [size=16K]
>     Memory at a1000000 (64-bit, non-prefetchable) [size=1M]
>     Capabilities: [50] Power Management version 3
>     Capabilities: [80] Vendor Specific Information: Len=14 <?>
>     Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+
>     Capabilities: [70] Express Root Complex Integrated Endpoint,
> IntMsgNum 0
>     Kernel driver in use: snd_hda_intel
>     Kernel modules: snd_hda_intel, snd_soc_avs, snd_sof_pci_intel_apl

Could you give alsa-info.sh output with broken and working (reverted)
states?  Run the script with --no-upload option and attach the
outputs.


thanks,

Takashi