Ubuntu LTS 24.04下Earbuds音量调节功能失效问题求助

Hey there! I totally get how frustrating it is when a familiar convenience feature like long-pressing your earbuds to adjust volume stops working after switching to Ubuntu 24.04. Let’s go through some practical fixes to get that functionality back:

• 检查蓝牙设备的基础设置
  Open up your Bluetooth settings, find your earbuds in the device list, and click the gear icon to access its details. Look for options like Media Controls or Button Support—make sure these are enabled. Sometimes Ubuntu doesn’t turn these on by default for certain Bluetooth devices.

• 用Blueman工具自定义按键映射
  The default Bluetooth manager in Ubuntu is pretty basic. Try installing blueman, a more powerful Bluetooth management tool:

  sudo apt install blueman
  

  Launch Blueman, right-click your earbuds, select Audio Settings, then head to the Key Mapping or Button Configuration section. Here you can manually set long-presses on the left/right earbuds to trigger volume up/down actions. This tool often handles custom button mappings better than the default manager.

• 调整PulseAudio的蓝牙配置
  Sometimes the PulseAudio sound server needs a tweak to recognize earbud button inputs. Here’s how to do it:

  1. Copy the default PulseAudio config to your user directory (so we don’t mess with system files):

     cp /etc/pulse/default.pa ~/.config/pulse/
     

  2. Edit the copied config file with a text editor (like nano):

     nano ~/.config/pulse/default.pa
     

  3. Find the line that says load-module module-bluetooth-discover and modify it to:

     load-module module-bluetooth-discover headset=auto
     

  4. Save the file (press Ctrl+O then Enter in nano), exit (Ctrl+X), then restart PulseAudio to apply changes:

     pulseaudio -k
     

  PulseAudio will automatically restart after this command.

• 重新配对耳塞并检查固件
  Sometimes corrupted pairing data can cause button issues. Try removing your earbuds from the Bluetooth device list, turn off and on your computer’s Bluetooth, then re-pair the earbuds from scratch. Also, check if your earbud brand has any firmware updates available—some models need updated firmware to work properly with Linux’s Bluetooth stack.

备注：内容来源于stack exchange，提问作者taha_28