Public bug reported:
escription:
Internal speakers produce no sound on the MSI Cyborg 15 A13VF laptop under
Ubuntu, although the codec is detected correctly and all ALSA controls appear
normal. Headphones and HDMI audio work. Speakers work normally in Windows 11,
so this is not a hardware issue.
This model likely requires a missing EC amplifier quirk for ALC256, similar to
existing MSI GF63/Katana/Sword audio fixes already present in alc256.c.
SYSTEM INFORMATION
Laptop: MSI Cyborg 15 A13VF
BIOS: E15K1IMS.114 (09/10/2024)
Audio Codec: Realtek ALC256
Audio Controller: Intel Raptor Lake-P/U/H cAVS
Intel PCI ID: 8086:51ca
NVIDIA PCI ID: 10de:22be
Ubuntu Version: 24.04
Kernel (Ubuntu OEM): 6.14.0-1019-oem
Mainline kernels tested: 6.18.7
Speakers non-functional on all tested kernels.
WHAT WORKS
HDMI audio
Headphones output
Microphone
Codec detection (card 1: PCH [HDA Intel PCH], device 0: ALC256
Analog)
Windows 11 speakers work normally
WHAT FAILS
Internal speakers produce no sound
speaker-test shows playback but no audible output
Port selection correct (analog-output-speaker)
Mixer values correct (Master/Speaker/PCM all unmuted)
No EC amp interface exposed in /sys/devices/platform/*/hda_amp
No kernel quirk for MSI Cyborg A13VF exists in patch_realtek.c
This matches known behavior on MSI laptops where the EC controls the speaker
amplifier, and Linux requires a quirk to enable it.
REPRODUCTION
Boot Ubuntu on MSI Cyborg 15 A13VF
Play audio through internal speakers
No sound output
Headphones and HDMI audio work
KEY LOGS (summaries)
lspci -nn | grep -i audio
0000:00:1f.3 Multimedia audio controller [0401]: Intel Corporation Raptor
Lake-P/U/H cAVS [8086:51ca]
0000:01:00.1 Audio device [0403]: NVIDIA Corporation Device [10de:22be]
aplay -l
card 1: PCH [HDA Intel PCH], device 0: ALC256 Analog
amixer -c 1 scontents
(Speaker/Master/PCM all unmuted; Auto-Mute Disabled.)
Full dmesg log attached via reporter.
REQUEST
Please add a quirk for:
MSI Cyborg 15 A13VF
Intel 8086:51ca (cAVS)
Realtek ALC256 codec
BIOS E15K1IMS.114
Likely requiring the ALC256_FIXUP_MSI_EC pattern used on GF63/Katana
series.
This will enable the EC-controlled speaker amplifier, restoring internal
speaker audio under Ubuntu.
Thank you.
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: linux-image-6.14.0-1019-oem 6.14.0-1019.19
ProcVersionSignature: Ubuntu 6.14.0-1019.19-oem 6.14.11
Uname: Linux 6.14.0-1019-oem x86_64
ApportVersion: 2.28.1-0ubuntu3.8
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: stefanos 3560 F.... wireplumber
/dev/snd/controlC1: stefanos 3560 F.... wireplumber
/dev/snd/seq: stefanos 3556 F.... pipewire
CRDA: N/A
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Sat Jan 24 17:23:39 2026
InstallationDate: Installed on 2026-01-19 (5 days ago)
InstallationMedia: Ubuntu 24.04.3 LTS "Noble Numbat" - Release amd64
(20250805.1)
Lsusb:
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 30c9:0042 Luxvisions Innotech Limited Integrated Camera
Bus 001 Device 003: ID 2b89:0043 UGREEN Receiver
Bus 001 Device 004: ID 8087:0033 Intel Corp. AX211 Bluetooth
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
MachineType: Micro-Star International Co., Ltd. Cyborg 15 A13VF
ProcFB: 0 simpledrmdrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.14.0-1019-oem
root=UUID=a6f196f3-4922-422c-80a6-1fc36b35d488 ro recovery nomodeset
dis_ucode_ldr
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No
PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
linux-restricted-modules-6.14.0-1019-oem N/A
linux-backports-modules-6.14.0-1019-oem N/A
linux-firmware 20240318.git3b128b60-0ubuntu2.22
SourcePackage: linux-oem-6.14
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/10/2024
dmi.bios.release: 1.20
dmi.bios.vendor: American Megatrends International, LLC.
dmi.bios.version: E15K1IMS.114
dmi.board.asset.tag: Default string
dmi.board.name: MS-15K1
dmi.board.vendor: Micro-Star International Co., Ltd.
dmi.board.version: REV:1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: Micro-Star International Co., Ltd.
dmi.chassis.version: N/A
dmi.modalias:
dmi:bvnAmericanMegatrendsInternational,LLC.:bvrE15K1IMS.114:bd09/10/2024:br1.20:svnMicro-StarInternationalCo.,Ltd.:pnCyborg15A13VF:pvrREV1.0:rvnMicro-StarInternationalCo.,Ltd.:rnMS-15K1:rvrREV1.0:cvnMicro-StarInternationalCo.,Ltd.:ct10:cvrN/A:sku15K1.1:
dmi.product.family: GF
dmi.product.name: Cyborg 15 A13VF
dmi.product.sku: 15K1.1
dmi.product.version: REV:1.0
dmi.sys.vendor: Micro-Star International Co., Ltd.
** Affects: linux-oem-6.14 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug noble
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https://bugs.launchpad.net/bugs/2139002
Title:
Internal speakers not working on MSI Cyborg 15 A13VF (ALC256 + Intel
8086:51ca) — missing EC amp quirk
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