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this post was submitted on 30 Aug 2023
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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.
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.
...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).
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.
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.
Sorry, I sent this reply to myself:
https://wiki.archlinux.org/title/Bluetooth_headset
Anyway, had the same fight with bluez5, pipewire fixed it too, is there nothing it can't solve?