[Bug 2158074] [NEW] Dynabook RA/ZYB (AMD ACP 6.3, subsystem 3100:f07b): internal speakers silent, headphones have periodic dropouts

Public bug reported: On Dynabook RA/ZYB laptop running Ubuntu 26.04 LTS (kernel 7.0.0-22-generic), audio is not working correctly. Hardware: - Audio Coprocessor: AMD ACP 6.3 [1022:15e2] rev 63, subsystem Dynabook Inc. [3100:f07b] - SoundWire codec: Realtek rt722-sdca (sdw:0:0:025d:0722:01) - Driver in use: snd_pci_ps (legacy path, snd_acp_sdw_legacy_mach) Issue 1: Internal speakers completely silent - aplay -l detects Card 1 (amd-soundwire) with devices 0 (SimpleJack) and 2 (SmartAmp) - wpctl status shows "Audio Coprocessor Speaker" as default sink - ALSA control "Speaker Switch" is on, volumes at max (87/87) - speaker-test on hw:1,2 produces no audio even with PipeWire stopped - Suspected cause: subsystem ID 3100:f07b (Dynabook RA/ZYB) is not registered in snd_soc_acpi_amd_sdca_quirks, so the SmartAmp function of the rt722 SDCA codec is not properly initialized for this machine. Issue 2: Headphone jack has periodic dropouts (~1 per second) - Audio signal is present but interrupted approximately once per second - dmesg shows: "workqueue: acpi_os_execute_deferred hogged CPU for >10000us" occurring repeatedly, causing PipeWire buffer underruns - No ALSA/audio-specific errors in dmesg Expected: internal speakers and headphones work correctly Actual: internal speakers completely silent, headphones have periodic dropouts A quirk entry for subsystem 3100:f07b is likely needed in sound/soc/amd/ps/acp63-sdca-quirks.c or equivalent. ProblemType: Bug DistroRelease: Ubuntu 26.04 Package: linux-image-7.0.0-22-generic 7.0.0-22.22 ProcVersionSignature: Ubuntu 7.0.0-22.22-generic 7.0.0 Uname: Linux 7.0.0-22-generic x86_64 ApportVersion: 2.34.0-0ubuntu2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: ryuji 15355 F.... pipewire ryuji 15356 F.... wireplumber /dev/snd/controlC0: ryuji 15356 F.... wireplumber /dev/snd/seq: ryuji 15355 F.... pipewire CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Wed Jun 24 18:38:02 2026 InstallationDate: Installed on 2026-06-22 (2 days ago) InstallationMedia: Ubuntu 26.04 "Resolute Raccoon" - Release amd64 (20260423.1) MachineType: Dynabook Inc. dynabook RA/ZYB ProcEnviron: LANG=ja_JP.UTF-8 PATH=(custom, no user) SHELL=/bin/bash TERM=xterm-256color ProcFB: 0 amdgpudrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-22-generic root=UUID=002a38ae-4aa4-4550-918d-24be59ef4a54 ro quiet splash crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 03/19/2026 dmi.bios.release: 1.80 dmi.bios.vendor: Dynabook Inc. dmi.bios.version: Version 1.80 dmi.board.asset.tag: 0000000000 dmi.board.name: OK012C/0000 dmi.board.vendor: Dynabook Inc. dmi.board.version: Version A0 dmi.chassis.asset.tag: 0000000000 dmi.chassis.type: 10 dmi.chassis.vendor: Dynabook Inc. dmi.chassis.version: Version 1.0 dmi.ec.firmware.release: 1.40 dmi.modalias: dmi:bvnDynabookInc.:bvrVersion1.80:bd03/19/2026:br1.80:efr1.40:svnDynabookInc.:pndynabookRA/ZYB:pvrW6RAZY7BAH:rvnDynabookInc.:rnOK012C/0000:rvrVersionA0:cvnDynabookInc.:ct10:cvrVersion1.0:skuPGA10N:pfadynabook: dmi.product.family: dynabook dmi.product.name: dynabook RA/ZYB dmi.product.sku: PGA10N dmi.product.version: W6RAZY7BAH dmi.sys.vendor: Dynabook Inc. ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug resolute ** Attachment added: "logs.tgz" https://bugs.launchpad.net/bugs/2158074/+attachment/5978713/+files/logs.tgz -- You received this bug notification because you are subscribed to linux in Ubuntu. Matching subscriptions: Bgg, Bmail, Nb https://bugs.launchpad.net/bugs/2158074 Title: Dynabook RA/ZYB (AMD ACP 6.3, subsystem 3100:f07b): internal speakers silent, headphones have periodic dropouts Status in linux package in Ubuntu: New Bug description: On Dynabook RA/ZYB laptop running Ubuntu 26.04 LTS (kernel 7.0.0-22-generic), audio is not working correctly. Hardware: - Audio Coprocessor: AMD ACP 6.3 [1022:15e2] rev 63, subsystem Dynabook Inc. [3100:f07b] - SoundWire codec: Realtek rt722-sdca (sdw:0:0:025d:0722:01) - Driver in use: snd_pci_ps (legacy path, snd_acp_sdw_legacy_mach) Issue 1: Internal speakers completely silent - aplay -l detects Card 1 (amd-soundwire) with devices 0 (SimpleJack) and 2 (SmartAmp) - wpctl status shows "Audio Coprocessor Speaker" as default sink - ALSA control "Speaker Switch" is on, volumes at max (87/87) - speaker-test on hw:1,2 produces no audio even with PipeWire stopped - Suspected cause: subsystem ID 3100:f07b (Dynabook RA/ZYB) is not registered in snd_soc_acpi_amd_sdca_quirks, so the SmartAmp function of the rt722 SDCA codec is not properly initialized for this machine. Issue 2: Headphone jack has periodic dropouts (~1 per second) - Audio signal is present but interrupted approximately once per second - dmesg shows: "workqueue: acpi_os_execute_deferred hogged CPU for >10000us" occurring repeatedly, causing PipeWire buffer underruns - No ALSA/audio-specific errors in dmesg Expected: internal speakers and headphones work correctly Actual: internal speakers completely silent, headphones have periodic dropouts A quirk entry for subsystem 3100:f07b is likely needed in sound/soc/amd/ps/acp63-sdca-quirks.c or equivalent. ProblemType: Bug DistroRelease: Ubuntu 26.04 Package: linux-image-7.0.0-22-generic 7.0.0-22.22 ProcVersionSignature: Ubuntu 7.0.0-22.22-generic 7.0.0 Uname: Linux 7.0.0-22-generic x86_64 ApportVersion: 2.34.0-0ubuntu2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: ryuji 15355 F.... pipewire ryuji 15356 F.... wireplumber /dev/snd/controlC0: ryuji 15356 F.... wireplumber /dev/snd/seq: ryuji 15355 F.... pipewire CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Wed Jun 24 18:38:02 2026 InstallationDate: Installed on 2026-06-22 (2 days ago) InstallationMedia: Ubuntu 26.04 "Resolute Raccoon" - Release amd64 (20260423.1) MachineType: Dynabook Inc. dynabook RA/ZYB ProcEnviron: LANG=ja_JP.UTF-8 PATH=(custom, no user) SHELL=/bin/bash TERM=xterm-256color ProcFB: 0 amdgpudrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-22-generic root=UUID=002a38ae-4aa4-4550-918d-24be59ef4a54 ro quiet splash crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 03/19/2026 dmi.bios.release: 1.80 dmi.bios.vendor: Dynabook Inc. dmi.bios.version: Version 1.80 dmi.board.asset.tag: 0000000000 dmi.board.name: OK012C/0000 dmi.board.vendor: Dynabook Inc. dmi.board.version: Version A0 dmi.chassis.asset.tag: 0000000000 dmi.chassis.type: 10 dmi.chassis.vendor: Dynabook Inc. dmi.chassis.version: Version 1.0 dmi.ec.firmware.release: 1.40 dmi.modalias: dmi:bvnDynabookInc.:bvrVersion1.80:bd03/19/2026:br1.80:efr1.40:svnDynabookInc.:pndynabookRA/ZYB:pvrW6RAZY7BAH:rvnDynabookInc.:rnOK012C/0000:rvrVersionA0:cvnDynabookInc.:ct10:cvrVersion1.0:skuPGA10N:pfadynabook: dmi.product.family: dynabook dmi.product.name: dynabook RA/ZYB dmi.product.sku: PGA10N dmi.product.version: W6RAZY7BAH dmi.sys.vendor: Dynabook Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2158074/+subscriptions