π ~1 min read
Table of contents
Symptom & Impact
Ubuntu 22.04 may show active playback while no audio is heard from expected output devices.
Environment & Reproduction
Volume sliders move, but speakers or headset remain silent in apps and system sounds.
Root Cause Analysis
Wrong output sink, muted profiles, HDMI auto-selection, or PipeWire and PulseAudio session confusion.
Quick Triage
Verify hardware volume keys, correct output in Settings, and cable or headset connection.
Step-by-Step Diagnosis
Run pactl list short sinks, pactl info, aplay -l, and systemctl –user status pipewire.

Solution – Primary Fix
Set the intended sink in Settings, unmute channels, and restart user audio services with systemctl –user restart pipewire pipewire-pulse.
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Solution – Alternative Approaches
Play a test sound and verify stable output across browser, media player, and notifications.
Verification & Acceptance Criteria
Keep kernel and firmware updated and avoid mixing unsupported third-party audio stacks.
Rollback Plan
Limit microphone access for unused apps in Ubuntu privacy settings.
Prevention & Hardening
Use matching sample rates to reduce crackle and latency under heavy CPU load.
Related Errors & Cross-Refs
Revert custom audio configs under ~/.config and return to default package versions.
Related tutorial: View the step-by-step tutorial for Ubuntu 22.04 LTS.
View all Ubuntu 22.04 LTS tutorials on the Tutorials Hub β
Browse all common problems & solutions on the Tutorials Hub.
References & Further Reading
Use man pactl, ALSA documentation, and Ubuntu 22.04 audio troubleshooting pages.
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