Public bug reported:
The internal microphone and/or headset microphone is not detected or
fails to capture any input on a clean installation of Ubuntu 24.04.4
While the output (speakers/headphones) works fine, the input source
remains silent or absent in the Sound Settings despite using
PipeWire/WirePlumber.
Hardware Information:
- OS: Ubuntu 24.04.4 LTS
- Audio Server: PipeWire (default)
- Kernel version: 6.17.0-14-generic
- Audio Chipset: Realtek ALC255 (Detected via workaround)
Steps to Reproduce:
1. Open "Sound Settings".
2. Check "Input Device".
3. Speak into the internal microphone or plug in a headset.
4. Observe that the input level bar does not move.
Actual Result:
The microphone does not capture any audio input.
Expected Result:
The microphone should be detected and capture audio input automatically without
manual configuration.
Workaround Found:
I have successfully fixed this issue by adding a specific model quirk to the
ALSA configuration. Adding the following line to /etc/modprobe.d/alsa-base.conf
resolves the problem:
Bash
options snd-hda-intel model=alc255-acer,dell-headset-multi
After adding this line and rebooting, the microphone works perfectly.
This suggests that the current kernel/ALSA pin mapping for this specific
hardware needs to be updated to include this quirk by default.
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: alsa-base 1.0.25+dfsg-0ubuntu7
ProcVersionSignature: Ubuntu 6.17.0-14.14~24.04.1-generic 6.17.9
Uname: Linux 6.17.0-14-generic x86_64
NonfreeKernelModules: zfs
ApportVersion: 2.28.1-0ubuntu3.8
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: rizkyana 3892 F.... wireplumber
/dev/snd/seq: rizkyana 3885 F.... pipewire
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Sun Mar 8 18:59:56 2026
InstallationDate: Installed on 2026-01-26 (41 days ago)
InstallationMedia: Ubuntu 24.04.3 LTS "Noble Numbat" - Release amd64
(20250805.1)
MachineType: ASUSTeK COMPUTER INC. VivoBook_ASUSLaptop X515FAC_A516FA
PackageArchitecture: all
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
SourcePackage: alsa-driver
Symptom: audio
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/12/2022
dmi.bios.release: 5.17
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: X515FAC.300
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: X515FAC
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.modalias:
dmi:bvnAmericanMegatrendsInc.:bvrX515FAC.300:bd04/12/2022:br5.17:svnASUSTeKCOMPUTERINC.:pnVivoBook_ASUSLaptopX515FAC_A516FA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnX515FAC:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:sku:
dmi.product.family: ASUSLaptop
dmi.product.name: VivoBook_ASUSLaptop X515FAC_A516FA
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.
** Affects: alsa-driver (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug noble wayland-session
** Attachment added: "alsa-info.txt.aFFdMtPdHb"
https://bugs.launchpad.net/bugs/2143660/+attachment/5950871/+files/alsa-info.txt.aFFdMtPdHb
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https://bugs.launchpad.net/bugs/2143660
Title:
Microphone not working/detected on VivoBook_ASUSLaptop X515FAC_A516FA
- Ubuntu 24.04.4
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