The speaker that emits the low frequencies - the “bass” portion of the sound spectrum does not work on a Lenovo y50-70 laptop

hello installed PLASMA DESKTOP on the laptop everything worked, I really liked monjara thanks, but the subbuffer built into the laptop does not work, the sound comes out only from the laptop speakers. Please tell me how to solve this problem

What is the perceived problem?

Where should it be coming from instead?

I guess you mean a subwoofer - a speaker that emits the low frequencies - the “bass” portion of the sound spectrum.

I guess that people willing and able to help
would need some basic system and hardware information to be able to do so.

yes, you’re right - it’s a speaker that emits the low frequencies - the “bass” portion of the sound spectrum.
basic system and hardware information:
Operating System: Manjaro Linux
KDE Plasma Version: 5.26.5
KDE Frameworks Version: 5.103.0
Qt Version: 5.15.8
Kernel Version: 6.1.19-1-MANJARO (64-bit)
Graphics Platform: X11
Processors: 8 × Intel® Core™ i7-4710HQ CPU @ 2.50GHz
Memory: 7.7 ГиБ of RAM
Graphics Processor: Mesa Intel® HD Graphics 4600
Manufacturer: LENOVO
Product Name: 20378
System Version: Lenovo Y50-70

inxi --audio  :heavy_check_mark:
Device-1: Intel Xeon E3-1200 v3/4th Gen Core Processor HD Audio
driver: snd_hda_intel
Device-2: Intel 8 Series/C220 Series High Definition Audio
driver: snd_hda_intel
Sound API: ALSA v: k6.1.19-1-MANJARO running: yes
Sound Server-1: PulseAudio v: 16.1 running: yes
Sound Server-2: PipeWire v: 0.3.65 running: yes

pactl info  :heavy_check_mark:
Server string: /run/user/1000/pulse/native
Library Protocol version: 35
Server Protocol version: 35
Running locally: yes
Customer Number: 11
Memory block size: 65472
Server name: pulseaudio
Server Version: 16.1
Default sampling specification: S16LE 2-channel 4410
Default channel layout: front-left,front-right
Default audio receiver: alsa_output.pci-0000_00_1b.0.analog-stereo
Default source: alsa_output.pci-0000_00_1b.0.analog-stereo.monitor

They seem to have figured it out here, some of it is in English but you might need a translator: Сабвуфер, Lenovo Y50-70 — Linux-hardware — Форум .

Issue with subwoofer speakers has been reported to ALSA developers
204833 – Subwoofer not working on Lenovo Y50-70
But the bug report has no data for developers to consider

I suggest you get a full ALSA diagnostic


Post the full response as an attachment to Bugzilla
and a description and links based on comments here and old information related to ALSA
(not PulseAudio data)

The non-working script mentioned in Bugzilla report has a warning

GitHub - dragosprju/y50-subwoofer-linux-enabler: Lenovo Y50 Subwoofer Enabler for Linux

This deprecated project can BREAK your subwoofer and/or speakers for good, with no chance of remedy. There have been reports about the subwoofer and/or speakers breaking as of January 2021. It is NOT recommended to use this script anymore!

The last comment in discussion you linked to has a good summary of the solution in English, but comment is dated 22.12.2015

Using hdajackretask is not likely to damage hardware
Reconfiguring PulseAudio for 2.1surround with LFE remixing is not the same as back then, but also unlikely to damage hardware
IMO the hda-verbs to reconfigure subwoofer pin 0x17 are the dangerous bit, and hda-verbs can be unreliable, so users should wait on a patch from ALSA developers

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Here 's what the command gave out :