Public bug reported:
The internal speakers of the ASUS ExpertBook P5 G2 (PM5606CGA, Realtek
ALC294 + two I2C Cirrus Logic CS35L41) are silent on 7.0.0-34-generic.
dmesg shows "ALC294: picked fixup (pin match)" and the amplifiers are
never bound to the codec.
Upstream already has the quirk for this subsystem ID (1043:3611):
"ALSA: hda/realtek: Add support for ASUS 2026 Commercial laptops using
CS35L41 HDA" (adds PM5406CGA, PM5606CGA, P5406CCA, P5606CCA; accepted
by Takashi Iwai, proposed for stable 7.0 and 6.18). It is not in the
Ubuntu kernel. Please cherry-pick it.
I tested locally with a quirk entry for 1043:3611 using
ALC294_FIXUP_CS35L41_I2C_2: both amplifiers bind and the speakers work.
Upstream uses the ALC287 variant, which I have not tested on this
machine. My test also used the Cirrus tuning files from the ASUS Windows
driver package in /lib/firmware/cirrus/. I did not test without them,
and they are not in the installed linux-firmware package.
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: linux-image-7.0.0-42-generic 7.0.0-42.42
ProcVersionSignature: Ubuntu 7.0.0-42.42-generic 7.0.14
Uname: Linux 7.0.0-42-generic x86_64
ApportVersion: 2.34.1-0ubuntu0.1
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Wed Nov 4 11:20:51 2026
InstallationDate: Installed on 2026-09-11 (54 days ago)
InstallationMedia: Ubuntu 26.04.1 LTS "Resolute Raccoon" - Release amd64
(20260826)
MachineType: ASUS ASUS EXPERTBOOK PM5606CGA
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=/boot/vmlinuz-7.0.0-42-generic
root=UUID=6392fa64-aa71-420a-8eeb-146992da99ce 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: 01/16/2026
dmi.bios.release: 2.5
dmi.bios.vendor: ASUSTeK COMPUTER INC. (Licensed by AMI, LLC.)
dmi.bios.version: PM5606CGA.205
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: PM5606CGA
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: 2.15
dmi.modalias:
dmi:bvnASUSTeKCOMPUTERINC.(LicensedbyAMI,LLC.):bvrPM5606CGA.205:bd01/16/2026:br2.5:efr2.15:svnASUS:pnASUSEXPERTBOOKPM5606CGA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnPM5606CGA:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:sku:pfaASUSEXPERTBOOK:
dmi.product.family: ASUS EXPERTBOOK
dmi.product.name: ASUS EXPERTBOOK PM5606CGA
dmi.product.version: 1.0
dmi.sys.vendor: ASUS
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug resolute wayland-session
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https://bugs.launchpad.net/bugs/2172914
Title:
No sound from internal speakers on ASUS ExpertBook PM5606CGA (missing
HDA quirk 1043:3611)
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