Created attachment 301907 attachment-12523-0.html Almost certainly your laptop doesn't have the _DSD entries needed to properly get sound working.
Check dmesg for either of these messages: dmesg | grep -i "Platform not supported -EINVAL" or dmesg | grep -i "Error: ACPI _DSD Properties are missing for HID" For reference, see: https://www.spinics.net/lists/alsa-devel/msg146157.html https://bugzilla.kernel.org/show_bug.cgi?id=216194 I have the same problem with the Lenovo Legion 2022 Gen 7 (16IAX7). I filed a support ticket with Lenovo a few weeks back, but when support followed back they wanted to text during work hours, and I was too busy to deal with that then and too busy to deal with it since. I think I may actually have some time today. If you have either message in your dmesg, I'd suggest filing a support ticket. If enough people complain about these issues, it may compel them to add the proper _DSD entries into a BIOS update. There's no reason that Lenovo can't include this information in a BIOS update. It does seem that going forward that the intention of Cirrus Logic is for the vendors to include this information in the BIOS. For vendors where this is not the case, likely what's happening is that these values are hard coded in the vendor provided drivers or firmware. It doesn't require them to touch Linux at all. It should be relatively simple for them to add this information as there's already an incomplete entry in the ACPI table as it is. In the kernel bug linked above, I attached a hacky patch that gets sound working on the 16IAX7... But it's a hack where I guessed and hard-coded the values and these could physically damage your speakers if the settings are too inappropriate for your model of laptop (including the 16IAX7). This is very much a USE AT YOUR OWN RISK scenario, and I sincerely recommend against using my patches to avoid any possibility of damage to your laptop. Furthermore, sound doesn't work after resume anyway. Although it could be argued that if people start trying to use hacks like these to enable sound under Linux for their laptop, vendors such as Lenovo may need to issue BIOS updates to address this to avoid costly laptop repairs. On 9/30/22 05:11, bugzilla-dae...@kernel.org wrote: > https://bugzilla.kernel.org/show_bug.cgi?id=208555 > > jochemp...@gmail.com changed: > > What |Removed |Added > ---------------------------------------------------------------------------- > CC| |jochemp...@gmail.com > > --- Comment #696 fromjochemp...@gmail.com --- > I seem to have the same issue on a lenovo Legion S7 16ARHA7, here is my > alsa-info hopefully it's of some use: > http://alsa-project.org/db/?f=59acbf18b993b0a49edaaee0027d4b57fcf2055c > -- 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 To manage notifications about this bug go to: https://bugs.launchpad.net/sound-2.6/+bug/1958019/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
