How to Fix No Sound on Linux Mint (2026 Guide — PulseAudio & ALSA)

Why There Is No Sound on Linux Mint

Linux Mint uses a two-layer audio architecture: ALSA (Advanced Linux Sound Architecture) provides low-level kernel driver access to your sound hardware, while PulseAudio (or PipeWire on newer installations) sits on top to manage audio routing, mixing, and per-app volume. When either layer fails, you get silence — and diagnosing which layer is broken determines which fix to apply.

Common causes of no sound on Linux Mint:

• Channels muted in ALSA mixer (PCM, Master, or Headphone set to 0)
• Wrong audio output device selected in PulseAudio
• PulseAudio daemon crashed or not running
• Corrupted PulseAudio configuration files
• Missing or outdated ALSA/kernel sound drivers
• HDMI output selected instead of speakers/headphones

Fix 1: Check Volume and Output Device in Sound Settings

Before touching any configuration, verify the obvious:

1. Click the volume icon in the system tray — ensure volume is not muted and is above 0.
2. Right-click the volume icon → Sound Settings.
3. Under Output, check which device is selected. If it shows HDMI or a device you're not using, switch to your speakers or headphones.
4. Check the output volume slider at 100%.

Fix 2: Unmute Channels in ALSA Mixer

ALSA can have individual channels muted independently of the PulseAudio volume. Open the ALSA mixer to check:

alsamixer

Use the arrow keys to navigate between channels. Any channel showing MM at the bottom is muted. Press M to unmute it. Key channels to check:

• Master — main output level
• PCM — digital audio output
• Headphone — if using headphones
• Speaker — built-in speakers

Press F6 to select a different sound card if you have multiple (e.g., HDMI audio vs. onboard audio).

After making changes, save the settings:

sudo alsactl store

Fix 3: Restart PulseAudio

If PulseAudio has crashed or frozen, restart it without rebooting:

pulseaudio -k
pulseaudio --start

Or via systemd (on newer Linux Mint installations):

systemctl --user restart pulseaudio

Test audio immediately after. If sound returns, the daemon had crashed silently.

Fix 4: Reset PulseAudio Configuration

Corrupted PulseAudio configuration files are a common cause of persistent no-sound issues, especially after updates:

pulseaudio -k
rm -r ~/.config/pulse/
pulseaudio --start

This removes your user-level PulseAudio configuration and regenerates it fresh. You'll need to re-set your preferred output device in Sound Settings afterward.

Fix 5: Test Sound Directly Through ALSA (Bypass PulseAudio)

To determine whether the problem is in ALSA (hardware/driver) or PulseAudio (software layer), test audio through ALSA directly:

speaker-test -t wav -c 2

If you hear sound from this test but not from normal applications, PulseAudio is the problem. If this test also produces no sound, the issue is in ALSA/drivers.

You can also play a test sound via ALSA directly:

aplay /usr/share/sounds/alsa/Front_Center.wav

Fix 6: Install or Reinstall PulseAudio

If PulseAudio is missing or severely corrupted, reinstall it:

sudo apt remove --purge pulseaudio pulseaudio-utils
sudo apt autoremove
sudo apt install pulseaudio pulseaudio-utils
pulseaudio --start

Log out and back in after reinstalling.

Fix 7: Install Missing ALSA Plugins and Firmware

Some sound cards (especially newer Intel/AMD hardware) require additional firmware packages not installed by default:

sudo apt update
sudo apt install alsa-utils alsa-plugins-extra linux-firmware
sudo alsactl init

Then restart PulseAudio:

pulseaudio -k && pulseaudio --start

Fix 8: Fix Timer-Based Scheduling (Audio Glitches or No Sound)

On some hardware, PulseAudio's timer-based scheduling causes audio dropouts or no sound. Disable it:

sudo nano /etc/pulse/default.pa

Find the line:

load-module module-udev-detect

Change it to:

load-module module-udev-detect tsched=0

Save and restart PulseAudio:

pulseaudio -k && pulseaudio --start

Fix 9: Check Sound Card Detection

Verify your sound card is being detected by the kernel:

aplay -l

This lists all detected sound cards and digital audio devices. If your card doesn't appear here, it's a driver or hardware problem — not PulseAudio.

Check kernel messages for sound card errors:

dmesg | grep -i snd
dmesg | grep -i audio

If you see errors about a missing firmware file, install the corresponding firmware package.

Fix 10: Switch to PipeWire (Modern Replacement for PulseAudio)

Linux Mint 22 and newer support PipeWire as a modern replacement for PulseAudio with better hardware compatibility:

sudo apt install pipewire pipewire-pulse wireplumber
systemctl --user enable pipewire pipewire-pulse wireplumber
systemctl --user start pipewire pipewire-pulse wireplumber

Disable PulseAudio from conflicting:

systemctl --user disable pulseaudio
systemctl --user stop pulseaudio

Log out and back in. PipeWire provides a PulseAudio-compatible API so all existing apps work without changes.

Frequently Asked Questions

Why did sound stop working after a Linux Mint update?

Updates to the linux-sound-base, pulseaudio, or alsa-utils packages can sometimes reset configuration or introduce incompatibilities. Run pulseaudio -k and rm -r ~/.config/pulse/ to reset PulseAudio config, then restart it. Also check alsamixer for newly muted channels.

How do I know if PulseAudio is running on Linux Mint?

Run: pulseaudio --check and check the exit code (0 means running), or run: ps aux | grep pulseaudio to see the process. If nothing appears, start it with: pulseaudio --start

My HDMI audio works but speakers don't on Linux Mint — how do I fix it?

Open Sound Settings and change the Output device from HDMI to your built-in speakers or analog output. Also open alsamixer, press F6 to select your onboard audio card, and ensure the Speaker and PCM channels are unmuted and at full volume.

Can I use PipeWire instead of PulseAudio on Linux Mint?

Yes. Linux Mint 22 and newer support PipeWire, which offers better hardware compatibility and lower latency. Install pipewire, pipewire-pulse, and wireplumber, enable them via systemctl --user, and disable PulseAudio. All existing apps continue working through PipeWire's PulseAudio compatibility layer.

Why does sound work in one application but not another on Linux Mint?

This is usually a PulseAudio stream routing issue. Open pavucontrol (PulseAudio Volume Control) with: pavucontrol — go to the Playback tab and check which output device each application is sending audio to. Switch the problematic app to your correct output device.