Ubuntu 16.04 LTS蓝牙耳机左右声道输出反转求助

Hey there! I know how annoying it is when your headphones play audio in the wrong channels—let’s get this sorted out for you with these simple, actionable steps:

Method 1: Use PulseAudio Volume Control (Graphical Tool) #

This is the easiest fix if the option is available:

• First, install the tool if you don’t have it yet. Open a terminal and run:

  sudo apt update && sudo apt install pavucontrol
  

• Launch it either by searching for "PulseAudio Volume Control" in the Ubuntu Dash or running pavucontrol in the terminal.
• Switch to the Output Devices tab.
• Locate your Beats Bluetooth headphones in the list. Click the small gear icon next to it.
• Select "Port Settings" and look for an option like Swap Left/Right Channels—check this box.
• Test the left/right audio channels now; they should be corrected.

Method 2: Remap Audio Channels via PulseAudio Configuration #

If the graphical option isn’t visible, we can tweak the PulseAudio config file manually:

• Open the terminal and edit the default PulseAudio config:

  sudo nano /etc/pulse/default.pa
  

• Scroll to the end of the file and add this line (replace YOUR_SINK_NAME with your headphone’s actual sink name):

  load-module module-remap-sink sink_name=reverse-stereo master=YOUR_SINK_NAME channels=2 master_channel_map=front-right,front-left channel_map=front-left,front-right
  

  • To find your sink name, run pacmd list-sinks in the terminal. Look for the name: field next to your Beats headphones (it’ll look something like bluez_sink.XX_XX_XX_XX_XX_XX.a2dp_sink).
• Save the file by pressing Ctrl+O, hit Enter, then exit nano with Ctrl+X.
• Restart PulseAudio to apply changes:

  pulseaudio -k
  

• Go to your system sound settings and select "reverse-stereo" as your output device. Test the channels again.

Method 3: Re-Pair Your Bluetooth Headphones #

Sometimes a pairing glitch causes audio channel issues:

• Open Ubuntu’s Bluetooth settings, find your Beats headphones, click the gear icon next to it, and select "Remove Device".
• Put your headphones into pairing mode (usually by holding the power button until the indicator light flashes).
• Reconnect and pair the headphones with your laptop, then test the audio channels.

Hopefully one of these methods fixes the reversed channels for you!

内容的提问来源于stack exchange，提问作者Didan974