** Summary changed: - No internal speaker output — Conexant SN6140, Lenovo IdeaPad Slim 5 14IRH10R (SSID 0x17aa3816) + No internal speaker output - Conexant SN6140, Lenovo IdeaPad Slim 5 14IRH10R (SSID 0x17aa3816)
** Description changed: The internal speakers produce no sound on a Lenovo IdeaPad Slim 5 14IRH10R (product 83J0, board LNVNB161216) using the Conexant SN6140 HDA codec. The codec is detected and a Speaker sink is created, but no audio is ever output. The internal microphone and Bluetooth audio both work correctly. Audio works normally under Windows on the same machine, confirming the hardware is fine. The kernel's autoconfig assigns pin 0x17 as a line-out of type "speaker" but configures speaker_outs=0, so the speaker amplifier/output is never properly wired up. No matching PCI quirk exists for this machine's subsystem ID, so the codec falls back to a generic fixup that does not initialize the speaker. Affected hardware Laptop: Lenovo IdeaPad Slim 5 14IRH10R DMI system-product-name: 83J0 DMI baseboard-product-name: LNVNB161216 Audio codec: Conexant SN6140 Codec Vendor Id: 0x14f11f87 Codec Subsystem Id (PCI SSID): 0x17aa3816 Software versions Distribution: Ubuntu 26.04 LTS Kernel: 7.0.0-28-generic ALSA driver version: k7.0.0-28-generic Audio server: PipeWire 1.6.2 / WirePlumber Symptoms Internal speakers: completely silent (no sound at any volume, not muted). Internal microphone: works. Bluetooth audio: works. Headphone jack: also silent. + A Speaker sink IS created and selectable; volume/mute changes have no effect. No errors reported by PipeWire, ALSA, or speaker-test. Same hardware outputs sound correctly under Windows. - Key diagnostic evidence + + Key diagnostic evidence: + Kernel autoconfig (dmesg) — shows the misconfiguration snd_hda_codec_conexant ehdaudio0D0: SN6140: BIOS auto-probing. snd_hda_codec_conexant ehdaudio0D0: SN6140: picked fixup for PCI SSID 17aa:0000 snd_hda_codec_conexant ehdaudio0D0: autoconfig for SN6140: line_outs=1 (0x17/0x0/0x0/0x0/0x0) type:speaker snd_hda_codec_conexant ehdaudio0D0: speaker_outs=0 (0x0/0x0/0x0/0x0/0x0) snd_hda_codec_conexant ehdaudio0D0: hp_outs=1 (0x16/0x0/0x0/0x0/0x0) snd_hda_codec_conexant ehdaudio0D0: mono: mono_out=0x0 snd_hda_codec_conexant ehdaudio0D0: inputs: snd_hda_codec_conexant ehdaudio0D0: Mic=0x19 Note two things: - picked fixup for PCI SSID 17aa:0000 — no quirk matched SSID 0x17aa3816; a generic fallback fixup was applied. line_outs=1 (0x17...) type:speaker combined with speaker_outs=0 — pin 0x17 is recognized as a speaker-type line-out but is not configured as a working speaker output. + Codec pin configuration (relevant nodes) Codec: Conexant SN6140 Vendor Id: 0x14f11f87 Subsystem Id: 0x17aa3816 Node 0x16 [Pin Complex] wcaps 0x400581: Stereo - Pin-ctls: 0xc0: OUT HP + Pin-ctls: 0xc0: OUT HP Node 0x17 [Pin Complex] wcaps 0x400501: Stereo - Pin-ctls: 0x40: OUT - Pin-ctls: 0x00: VREF_HIZ + Pin-ctls: 0x40: OUT + Pin-ctls: 0x00: VREF_HIZ Node 0x19 [Pin Complex] wcaps 0x40048b: Stereo Amp-In - Pin-ctls: 0x20: IN VREF_HIZ + Pin-ctls: 0x20: IN VREF_HIZ Node 0x17 = internal speaker pin (OUT capable), but not driven. Node 0x16 = headphone (OUT HP). Node 0x19 = internal mic (works). ProblemType: Bug DistroRelease: Ubuntu 26.04 Package: alsa-base 1.0.25+dfsg-0ubuntu9 ProcVersionSignature: Ubuntu 7.0.0-28.28-generic 7.0.12 Uname: Linux 7.0.0-28-generic x86_64 ApportVersion: 2.34.0-0ubuntu2 Architecture: amd64 CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Mon Aug 3 10:46:54 2026 InstallationDate: Installed on 2026-07-23 (11 days ago) InstallationMedia: Ubuntu 26.04 "Resolute Raccoon" - Release amd64 (20260423.1) MachineType: LENOVO 83J0 PackageArchitecture: all ProcEnviron: - LANG=en_US.UTF-8 - PATH=(custom, no user) - SHELL=/bin/bash - TERM=xterm-256color - XDG_RUNTIME_DIR=<set> + LANG=en_US.UTF-8 + PATH=(custom, no user) + SHELL=/bin/bash + TERM=xterm-256color + XDG_RUNTIME_DIR=<set> PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. SourcePackage: alsa-driver UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 10/15/2024 dmi.bios.release: 1.15 dmi.bios.vendor: LENOVO dmi.bios.version: Q5CN15WW dmi.board.asset.tag: NO Asset Tag dmi.board.name: LNVNB161216 dmi.board.vendor: LENOVO dmi.board.version: SDK0T76493 WIN dmi.chassis.asset.tag: NO Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: IdeaPad Slim 5 14IRH10R dmi.ec.firmware.release: 1.15 dmi.modalias: dmi:bvnLENOVO:bvrQ5CN15WW:bd10/15/2024:br1.15:efr1.15:svnLENOVO:pn83J0:pvrIdeaPadSlim514IRH10R:rvnLENOVO:rnLNVNB161216:rvrSDK0T76493WIN:cvnLENOVO:ct10:cvrIdeaPadSlim514IRH10R:skuLENOVO_MT_83J0_BU_idea_FM_IdeaPadSlim514IRH10R:pfaIdeaPadSlim514IRH10R: dmi.product.family: IdeaPad Slim 5 14IRH10R dmi.product.name: 83J0 dmi.product.sku: LENOVO_MT_83J0_BU_idea_FM_IdeaPad Slim 5 14IRH10R dmi.product.version: IdeaPad Slim 5 14IRH10R dmi.sys.vendor: LENOVO -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2162696 Title: No internal speaker output - Conexant SN6140, Lenovo IdeaPad Slim 5 14IRH10R (SSID 0x17aa3816) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/2162696/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
