this post was submitted on 20 Aug 2024
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Bluetooth Audio Issues when launching a game? (slrpnk.net)
submitted 3 weeks ago by Sunny@slrpnk.net to c/linux@lemmy.ml
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Hi there, I just acquired myself the Sennheiser Momentum 4, mainly for using while communting + work. But figured i'd try them out for some gaming too. They work just fine when watching YT or any video, but when I launch a game the audio quality changes significantly. I have no idea how or why its doing it, nor how to fix it. I've tried all of these different audio profile options, but all of them make the audio either distorted, weak, or make it sound like the audio is trapped inside a room... Anyone know how to go about this? Audio works fine with my normal non-wireless headset.

My system is running Bazzite.

Appreciate any pointers to how to resolve this.

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[–] kevincox@lemmy.ml 33 points 3 weeks ago (1 children)

Likely what is happening is that the game is probing audio devices and triggering the mic on your headphones to get picked up. This switches them into the "headset" profile which has awful audio quality. I don't know why the UI isn't showing that, make sure you are checking while the game is running and the audio sounds bad.

If you want your headphone mic to work there is not much choice. There isn't a standard bluetooth profile with good audio and mic. If you never want to use your headphone mic you can probably configure some advanced settings in your audio manager (probably PulseAudio or PipeWire).

[–] Sunny@slrpnk.net 5 points 3 weeks ago (2 children)

Thank you for the info. I won't need the mic, so I'll have a look at what I can tweak to prevent this 👍

[–] ElectroLisa@lemmy.blahaj.zone 6 points 3 weeks ago (1 children)

Iirc there's a setting for Wireplumber (in case you're using PipeWire) to disable that behaviour when a BT mic is being picked up

[–] Blisterexe@lemmy.zip 7 points 3 weeks ago* (last edited 3 weeks ago) (1 children)

Can you tell me what that setting is? I have the same issue as OP

edit: i think it's this

bluetooth.autoswitch-to-headset-profile = { description = "Whether to autoswitch to BT headset profile or not" type = "bool" default = true

Edit: for those looking at this thread changing that true to false works, although you do need to restart the computer

[–] Sunny@slrpnk.net 2 points 3 weeks ago (1 children)

what was the filepath to this file?

[–] Blisterexe@lemmy.zip 3 points 3 weeks ago

i think its this:

/usr/share/wireplumber/wireplumber.conf

[–] Kekin@lemy.lol 5 points 3 weeks ago

https://wiki.archlinux.org/title/Bluetooth_headset

Sections 3.3 or 3.4

I did 3.4 to disable the headset profiles cause generally it's ass

[–] tiramichu@lemm.ee 13 points 3 weeks ago* (last edited 3 weeks ago) (1 children)

This may be a nonsense suggestion but is the game trying to activate the headphone mic?

If so this could be switching it to a different mode and cutting your headset audio quality in half.

EDIT: two other people suggested the same thing at the same time, never mind :)

[–] Sunny@slrpnk.net 4 points 3 weeks ago (1 children)

Might very well be it! Was testing them with Battlefield 4, so it might well be it. I'll do further testing tomorrow 👍

[–] Sunny@slrpnk.net 5 points 3 weeks ago (1 children)

Confirmed, changing the microphone input fixes the audio issues :)

[–] tiramichu@lemm.ee 3 points 3 weeks ago

Yay!

[–] alonely0@programming.dev 4 points 3 weeks ago* (last edited 3 weeks ago) (1 children)

Momentum 4 owner here too. ~~Can you provide the details of your distro?~~ You already have aptx/aptx-hd available, it's what you should use with them. Ima look into it when I get home.

[–] Sunny@slrpnk.net 1 points 3 weeks ago (1 children)

Yeah that was what it was set to by default, and interestingly also what it jumpes back to when i left the game just now.

[–] alonely0@programming.dev 1 points 3 weeks ago (1 children)

That's the headset renegotiating the codec probably. Update the firmware in the app if you haven't, maybe it'll fix the issue.

[–] Sunny@slrpnk.net 1 points 3 weeks ago

Mine says they are running the latest version.

[–] skullgiver@popplesburger.hilciferous.nl 4 points 3 weeks ago* (last edited 3 weeks ago)

Probably something accessing your microphone and making the headset switch to HSP/HFP. Correcting the microphone input usually allows me to switch back to A2DP, but not always unfortunately. I've had it happen a few times at random too (some games, a chat program). I still don't know what causes my issues exactly, but after a few updates and editing my Pipewire config it doesn't seem to happen as much anymore.

I dug in deep and I think completely removing the HSP and HFP roles from the Wireplumber config file solved the issue. I don't know what to do if you're on Pulseaudio, and there's no GUI setting to do this, but it may help you on your quest to figure this stuff out.