Public bug reported:
Hello,
I am running Ubuntu on an HP Elite x2 G8 Tablet (Intel Tiger Lake
platform). The audio system uses a Realtek ALC3292 codec combined with
two discrete NXP TFA9894 amplifiers for the internal speakers.
Currently, the internal speakers are not working correctly (routing issue/wrong
fixup applied):
1. When testing the LEFT channel, sound comes out of BOTH internal speakers
simultaneously.
2. When testing the RIGHT channel, there is absolute silence from the internal
speakers.
3. Audio via the headphone jack (wired) and Bluetooth works perfectly in full
stereo.
It seems the driver applies a generic ALC285 fixup (SSID 103c:0000) and
fails to properly initialize or route the right-channel NXP TFA9894
amplifier via ACPI/I2C.
I have attached all the necessary debug logs, including alsa-info, codec
dump, dmesg, and nhlt.bin.
Could you please help with a proper kernel quirk/fixup for this specific
hardware configuration? Thank you!
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/controlC0: kostyan 2047 F.... pipewire
kostyan 2064 F.... wireplumber
/dev/snd/seq: kostyan 2047 F.... pipewire
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Fri Jun 5 14:13:06 2026
InstallationDate: Installed on 2026-03-27 (70 days ago)
InstallationMedia: Ubuntu 25.10 "Questing Quokka" - Release amd64 (20251007)
MachineType: HP HP Elite x2 G8 Tablet
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-22-generic
root=UUID=0c9215e6-6855-4561-b3be-39ff62c4da9a ro quiet splash mitigations=off
nohz=on nmi_watchdog=0 i915.enable_guc=3 drm.vblankoffdelay=1
i915.disable_power_well=1 nvme_core.default_ps_max_latency_us=8001
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: Upgraded to resolute on 2026-04-23 (43 days ago)
dmi.bios.date: 03/05/2026
dmi.bios.release: 22.1
dmi.bios.vendor: HP
dmi.bios.version: T91 Ver. 01.22.01
dmi.board.name: 870D
dmi.board.vendor: HP
dmi.board.version: KBC Version 42.41.00
dmi.chassis.type: 32
dmi.chassis.vendor: HP
dmi.ec.firmware.release: 66.65
dmi.modalias:
dmi:bvnHP:bvrT91Ver.01.22.01:bd03/05/2026:br22.1:efr66.65:svnHP:pnHPElitex2G8Tablet:pvrSBKPFV3:rvnHP:rn870D:rvrKBCVersion42.41.00:cvnHP:ct32:cvr:sku65B29US#ABA:pfa103C_5336ANHPElitex2:
dmi.product.family: 103C_5336AN HP Elite x2
dmi.product.name: HP Elite x2 G8 Tablet
dmi.product.sku: 65B29US#ABA
dmi.product.version: SBKPFV3
dmi.sys.vendor: HP
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug resolute wayland-session
** Attachment added: "I don't know English, but if you need any more
information, I'll send it. Unfortunately, you can't attach more than one file
here."
https://bugs.launchpad.net/bugs/2155634/+attachment/5975734/+files/codec_dump.txt
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https://bugs.launchpad.net/bugs/2155634
Title:
HP Elite x2 G8 Tablet: Mono-Duplicate Left channel on internal
speakers (ALC3292 + 2x NXP TFA9894)
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