(In reply to Cameron Berkenpas from comment #697) > Created attachment 301907 [details] > 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 > >
Thanks for the info, appreciate it. using grep i didn't find any of those messages though. so might not be the same issue after all then. -- 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 To manage notifications about this bug go to: https://bugs.launchpad.net/sound-2.6/+bug/1958019/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
