There's no patch for your laptop yet.

Assuming your sound bar is initialized through verbs (I suspect it is), 
you'll need to find the verb sequence yourself:
https://github.com/thiagotei/linux-realtek-alc287/tree/cameron

Once there's a working verb sequence, a patch can be created.

On 5/23/22 04:50, bugzilla-dae...@kernel.org wrote:
> https://bugzilla.kernel.org/show_bug.cgi?id=208555
>
> --- Comment #611 from singo (hnsinan...@gmail.com) ---
> Hello everyone,
>
> I really appreciate this thread and all of the solutions that have been
> produced for this issue. Thanks to everyone contributing, especially Cameron
> Berkenpas who has been very helpful to a number of users and the main driving
> force for fixes:)
>
> Now to my issue: I own a Lenovo Yoga 7i 15ITL05 82AC with the ALC287.
> Currently
> it runs Ubuntu 22.04. LTS  with the included 5.15 Kernel. Before I have run
> Pop_OS 21.04. and 22.04. With all these distros, the sound worked partially
> but
> never fully. The experience is the same as many other users here, where there
> would only be sound coming out the from the downward firing speakers, but not
> from the soundbar above the keyboard, which are the bass speakers judging by
> the tinny sound I get now. The sound works beautifully in Windows, since the
> lower end frequencies can be replayed.
>
> Quite honestly, I've lost the overview over this thread and am not so sure
> which patch I should apply. I've tried manually update my Ubuntu 22.04. to
> the
> mainline 5.17 Kernel, which worked OS-wise but didn't change sound. My hope
> was
> that the sound patches have been included in that Kernel, but it seems
> they're
> only working for the Legion 7.
>
> Could someone point me to the right patch or verbs that have to be applied
> for
> my Lenovo model in order for the bass speakers to work? Maybe someone has
> figured it out for this particular case?
>
> Much thanks in advance.
>
> Here's my alsa-info:
>
> http://alsa-project.org/db/?f=ad3990bed59a24417ea6429250275012611a0302
>

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to alsa-driver in Ubuntu.
https://bugs.launchpad.net/bugs/1958019

Title:
  [Lenovo Legion7 16ACHg6 82N6, Realtek ALC287, Speaker, Internal] No
  sound at all

Status in sound-2.6 (alsa-kernel):
  Confirmed
Status in alsa-driver package in Ubuntu:
  Confirmed

Bug description:
  On my Lenovo Legion-7-16ACHg6 laptop I can't hear any sound by
  internal speakers, but it work by headphones connected to standard
  jack aux.

  uname -r
  5.11.0-44-generic

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: alsa-base 1.0.25+dfsg-0ubuntu5
  ProcVersionSignature: Ubuntu 5.11.0-44.48~20.04.2-generic 5.11.22
  Uname: Linux 5.11.0-44-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.20.11-0ubuntu27.21
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC2:  i3draven   1266 F.... pulseaudio
   /dev/snd/controlC0:  i3draven   1266 F.... pulseaudio
   /dev/snd/controlC1:  i3draven   1266 F.... pulseaudio
   /dev/snd/pcmC1D0p:   i3draven   1266 F...m pulseaudio
  CasperMD5CheckResult: skip
  CurrentDesktop: ubuntu:GNOME
  Date: Sat Jan 15 15:10:53 2022
  InstallationDate: Installed on 2021-10-11 (96 days ago)
  InstallationMedia: Ubuntu 20.04.3 LTS "Focal Fossa" - Release amd64 (20210819)
  PackageArchitecture: all
  SourcePackage: alsa-driver
  Symptom: audio
  Symptom_AlsaPlaybackTest: ALSA playback test through plughw:Generic failed
  Symptom_Card: Family 17h (Models 10h-1fh) HD Audio Controller - HD-Audio 
Generic
  Symptom_DevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC2:  i3draven   1266 F.... pulseaudio
   /dev/snd/controlC0:  i3draven   1266 F.... pulseaudio
   /dev/snd/controlC1:  i3draven   1266 F.... pulseaudio
   /dev/snd/pcmC1D0p:   i3draven   1266 F...m pulseaudio
  Symptom_Jack: Speaker, Internal
  Symptom_Type: No sound at all
  Title: [82N6, Realtek ALC287, Speaker, Internal] No sound at all
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 11/08/2021
  dmi.bios.release: 1.49
  dmi.bios.vendor: LENOVO
  dmi.bios.version: GKCN49WW
  dmi.board.asset.tag: NO Asset Tag
  dmi.board.name: LNVNB161216
  dmi.board.vendor: LENOVO
  dmi.board.version: SDK0R32862 WIN
  dmi.chassis.asset.tag: NO Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Legion 7 16ACHg6
  dmi.ec.firmware.release: 1.49
  dmi.modalias: 
dmi:bvnLENOVO:bvrGKCN49WW:bd11/08/2021:br1.49:efr1.49:svnLENOVO:pn82N6:pvrLegion716ACHg6:skuLENOVO_MT_82N6_BU_idea_FM_Legion716ACHg6:rvnLENOVO:rnLNVNB161216:rvrSDK0R32862WIN:cvnLENOVO:ct10:cvrLegion716ACHg6:
  dmi.product.family: Legion 7 16ACHg6
  dmi.product.name: 82N6
  dmi.product.sku: LENOVO_MT_82N6_BU_idea_FM_Legion 7 16ACHg6
  dmi.product.version: Legion 7 16ACHg6
  dmi.sys.vendor: LENOVO

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