Hi guys! Is there a way to get my KDE Neon to prefer aptX over ldac_HQ? If I understand it correctly, ldac seems to be a bit more unstable jumping over different bitrates when having interference, and aptX might be more stable? I’d like to try the difference, but not sure how to force Neon to work with the aptX codec with my headsets (Sony XM2 and XM5). I’m trying all this because I don’t seem to be able to get any decent audio quality. It’s super broken, stuttering constantly. Even changing from A2DP sink to the HFP mode (which I understand it to have lower bitrate and latency due to being designed for talking) improves it just very slightly, with the stutter continuing. This doesn’t happen if I boot into windows on the same computer, audio works flawlessly.

  • @InverseParallaxEnglish
    7•1 year ago

    Uhh, go to audio preferences, then advanced settings, and the output for your Bluetooth should have a drop down with ldac, aptx and sbc/etc.

    It’s the same place you switch a particular output from analog to digital or headphones to 5.1, it should have all the options, it’s how I do it.

    • -spam-
      3•1 year ago

      Thank you! I’ve been getting so annoyed that I couldn’t figure out my stuttering with my BT headphones.

    • @[email protected]OP
      2•1 year ago

      Thanks…where’s that advanced settings you mention? I don’t seem to be able to find it. On the headset I’m only allowed to choose the audio container, between A2DP sink and HFP, but no specifics regarding LDAC or AptX. https://imgur.com/a/zi6YJZU

      • @InverseParallaxEnglish
        2•1 year ago

        Check, sec I have to look, there’s a library that helps with codecs.

      • @InverseParallaxEnglish
        1•1 year ago

        Your headset doesn’t support anything above sbc I think.

        • @[email protected]OP
          1•1 year ago

          That…is not correct. As mentioned, these are the higher end Sony XM2 and XM5. They support LDAC, at least the XM2 also AptX and HD, and some others.

          • @InverseParallaxEnglish
            1•1 year ago

            Yeah, I added later, you might need to add the bluez stack to get proper ldac and aptx support, pulseudio only supports sbc by default.

            • @[email protected]OP
              1•1 year ago

              …on OP I did mention that ldac_HQ was already being selected, and stuttering. I wanted to change to aptX instead. So bluez stack is/was installed. But nevermind, I ended up changing the whole audio stack to pipewire. Seems to work much better than pulseaudio, and has more options to individually choose my specific codec, not just the container (sbc/a2dp sink).

              • @InverseParallaxEnglish
                2•1 year ago

                Pulseaudio is… bad.

                I’m just wondering how you knew you were on ldac if it didn’t show up in output settings, I mean I have a led that says, but I’d want to know from linux too.

                • @[email protected]OP
                  1•1 year ago

                  Hmmm some of the console commands I was using for troubleshooting listed the enabled codec. But no idea on how to change it from there.