(In reply to Cameron Berkenpas from comment #711)
> It does not, which is unfortunate, as the 6th gen model recently finally 
> got support.
> 
> The gen 7 uses the CSC3551 and the gen 7 is missing the properties in 
> the _DSD tables.
> 
> Do you already have the Gen 7?

No, I just have a Gen 6 and it's still working fine on a patched 5.17
kernel.

> Try submitting a Lenovo support ticket 
> asking them to add the properties. I have a ticket they haven't follow 
> up on yet so I added a comment to the ticket I think less than an hour ago.

I wish the kernel guys weren't so dead set against loadable DSDTs.
There's still so many reasons why we need to be able to patch these
ourselves and there's no good reason to have to rebuild an entire kernel
just to add missing table entries.

> On 10/24/22 09:55, bugzilla-dae...@kernel.org wrote:
> > https://bugzilla.kernel.org/show_bug.cgi?id=208555
> >
> > --- Comment #710 from Howard Chu (h...@highlandsun.com) ---
> > Hi, I might've missed this but - do we know for certain that the 7th gen
> > Legion
> > 7 (2022 model) uses the same amplifier chip as the 6th gen (2021 model)?
> >

-- 
You received this bug notification because you are a member of Desktop
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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