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Title: Troubleshooting External Speakers Hum Noise on Ubuntu 24.04
Introduction:
When no audio is playing, external speakers on Ubuntu 24.04 may start producing a hum noise. This article will provide a step-by-step guide to troubleshoot and resolve this issue.
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Check the Audio Settings:
- Open the Settings app.
- Navigate to the 'Sound' section.
- Ensure that the correct output device is selected.
- Check the volume level and make sure it is not set too low.
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Disable Audio Feedback:
- Go to the Terminal.
- Run the command:
sudo alsamixer - Locate the 'Auto Feedback' option.
- Press the Mute key to disable it.
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Update the Audio Drivers:
- Open the Terminal.
- Run the command:
sudo apt-get update - Then, run:
sudo apt-get upgrade - After the update, run:
sudo apt-get install linux-headers-$(uname -r) - Finally, run:
sudo apt-get install pulseaudio
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Configure PulseAudio:
- Open the Terminal.
- Run the command:
pacmd list-cards - Identify the index of your audio card.
- Run the command:
pacmd set-card-profile <index> auto
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Disable Power Saving:
- Go to the Settings app.
- Navigate to the 'Power' section.
- Disable the 'Power Saving' option for your audio device.
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Check for Hardware Issues:
- Ensure that the external speakers are properly connected to your computer.
- Try using a different set of speakers or headphones to rule out hardware issues.
References:
- Book: "Ubuntu Server Book" by Douglas J. Eadline and Brian A. Murray.
- Article: "Troubleshooting Audio Issues in Ubuntu" by LinuxConfig.org.
- Online Resource: "Ubuntu Audio Troubleshooting Guide" by Ubuntu Documentation.