Public bug reported:
Claude wrote this after some testing.
Hardware: ASUS Zenbook 14 UM3405GA, Ryzen AI 9 465
OS: Ubuntu 26.04 LTS, kernel 7.0.0-38-generic
BIOS version: UM3405GA.304
Problem:
Internal speakers produce no sound. Headphone jack, HDMI audio and
Bluetooth audio work.
Findings:
- Codec: Realtek ALC294, Subsystem ID 0x104319f4
- ACPI device CSC3551 is present. dmesg shows two Cirrus Logic CS35L41
amps (Revision B2) detected by cs35l41-hda:
cs35l41-hda i2c-CSC3551:00-cs35l41-hda.0: Cirrus Logic CS35L41 (35a40),
Revision: B2
cs35l41-hda i2c-CSC3551:00-cs35l41-hda.1: Reset line busy, assuming shared
reset
cs35l41-hda i2c-CSC3551:00-cs35l41-hda.1: Cirrus Logic CS35L41 (35a40),
Revision: B2
- The codec driver logs "picked fixup (pin match)", meaning no
model-specific quirk is applied.
- The kernel already contains ALC294_FIXUP_CS35L41_I2C_2, which looks
like the right fixup, but 0x104319f4 doesn't appear to be in the quirk
table.
- linux-firmware 20260319 has no cs35l41-dsp1-spk-prot-104319f4 tuning
files.
- speaker-test -D hw:1,0 is silent. alsamixer shows nothing muted except
headphones. PipeWire shows a correct default sink.
- fwupd has no System Firmware update for this model.
Request: please consider adding a quirk entry for 1043:19f4 using the
CS35L41 I2C fixup, and tuning files if available. I can test patches or
test kernels.
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: linux-image-7.0.0-38-generic 7.0.0-38.38
ProcVersionSignature: Ubuntu 7.0.0-38.38-generic 7.0.14
Uname: Linux 7.0.0-38-generic x86_64
ApportVersion: 2.34.1-0ubuntu0.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: user13 5480 F.... wireplumber
/dev/snd/controlC0: user13 5480 F.... wireplumber
/dev/snd/seq: user13 5461 F.... pipewire
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Fri Oct 9 22:23:21 2026
InstallationDate: Installed on 2026-10-10 (0 days ago)
InstallationMedia: Ubuntu 26.04.1 LTS "Resolute Raccoon" - Release amd64
(20260826)
MachineType: ASUS Zenbook 14 UM3405GA
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
ProcFB: 0 amdgpudrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-7.0.0-38-generic
root=/dev/mapper/ubuntu--vg-ubuntu--lv ro quiet splash
crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/13/2026
dmi.bios.release: 5.35
dmi.bios.vendor: American Megatrends International, LLC.
dmi.bios.version: UM3405GA.304
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: UM3405GA
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.ec.firmware.release: 3.3
dmi.modalias:
dmi:bvnAmericanMegatrendsInternational,LLC.:bvrUM3405GA.304:bd03/13/2026:br5.35:efr3.3:svnASUS:pnZenbook14UM3405GA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnUM3405GA:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:sku:pfaZenbook14:
dmi.product.family: Zenbook 14
dmi.product.name: Zenbook 14 UM3405GA
dmi.product.version: 1.0
dmi.sys.vendor: ASUS
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug resolute wayland-session
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/2170415
Title:
ASUS Zenbook 14 UM3405GA: internal speakers silent, CS35L41 amps
probed but not bound (ALC294, subsystem 1043:19f4)
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2170415/+subscriptions
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
