Some info is here: https://github.com/thiagotei/linux-realtek-alc287
You can run a VM using someone's fork of of Qemu (which just adds a bit of logging) with PCIE passthrough of your sound card. Then you can narrow down exactly which verbs are needed. It seems that some of the people in your linked bug are attempting the exact same method already. This is all assuming you're simply missing the verb initialization sequence for your laptop's hardware. For example, the 2021 Lenovo Legion's (both the AMD and Intel models) have a separate issue where the speakers are controlled by a Cirrus Logic (CS35L51) amplifier chip that currently has no support in Linux. I can't do this, because I don't have this model of laptop, and I don't really have anymore time to dedicate to this. I've attempted to send the patches upstream. I never got a response. Not even the slightest amount of feedback. Considering this is something I've done on the side and that I have a lot of other responsibilities, I think this is as likely as far as this is going to go. Good luck on the Lenovo c930. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1939052 Title: No sound on Lenovo laptop models Legion 15IMHG05, Yoga 7 14ITL5, and 13s Gen2 Status in linux package in Ubuntu: New Bug description: All 3 models need the appropriate HDA verbs sent to properly initialize the sound hardware. Additionally, the Legion 15IMHG05 needs automute disabled otherwise speaker output will not return after removing headphones. The good news is that I have working patches for all 3. However, the 13s Gen2 reportedly has some weirdness on the volume control. I don't have this model of laptop so there's not a lot I can do. It seems tuning the volume up and down using the keys on the keyboard can jump the volume up and down in large increments. Volume adjustments via a GUI do not have this issue. ProblemType: Bug DistroRelease: Ubuntu 21.04 Package: linux-image-5.11.0-25-generic 5.11.0-25.27 ProcVersionSignature: Ubuntu 5.11.0-25.27-generic 5.11.22 Uname: Linux 5.11.0-25-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu65.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: hiryu 7243 F.... pulseaudio /dev/snd/controlC0: hiryu 7243 F.... pulseaudio CasperMD5CheckResult: pass CurrentDesktop: KDE Date: Thu Aug 5 10:17:57 2021 InstallationDate: Installed on 2021-04-23 (104 days ago) InstallationMedia: Kubuntu 21.04 "Hirsute Hippo" - Release amd64 (20210420) MachineType: LENOVO 82K6 ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.11.0-25-generic root=UUID=825f1536-7d58-4097-9779-e5df2db0a6eb ro quiet splash nvidia-drm.modeset=0 resume=/dev/mapper/swap thinkpad_acpi.fan_control=1 bluetooth.disable_ertm acpi_backlight=video vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-5.11.0-25-generic N/A linux-backports-modules-5.11.0-25-generic N/A linux-firmware 1.197.2 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 07/18/2021 dmi.bios.release: 1.33 dmi.bios.vendor: LENOVO dmi.bios.version: H1CN33WW 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 16ITHg6 dmi.ec.firmware.release: 1.33 dmi.modalias: dmi:bvnLENOVO:bvrH1CN33WW:bd07/18/2021:br1.33:efr1.33:svnLENOVO:pn82K6:pvrLegion716ITHg6:rvnLENOVO:rnLNVNB161216:rvrSDK0R32862WIN:cvnLENOVO:ct10:cvrLegion716ITHg6: dmi.product.family: Legion 7 16ITHg6 dmi.product.name: 82K6 dmi.product.sku: LENOVO_MT_82K6_BU_idea_FM_Legion 7 16ITHg6 dmi.product.version: Legion 7 16ITHg6 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1939052/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
