My bluetooth speaker does not work

I noticed that my bluetooth speaker did not work.

I’m using Realtek Bluetooth USB to connect my PC into my bluetooth speaker. I can detect my bluetooth speaker, able to connect, but when I play audio/video suddenly it dropped back to default speaker.

Logs says: src/device.c:search_cb() [Device Address] error updating services: Input/output error (5)

I track back using Live ISO and found that:
Manjaro GNOME 25.0.4 (manjaro-gnome-25.0.4-minimal-250623-linux612.iso) works but
Manjaro GNOME 25.0.5 (manjaro-gnome-25.0.5-minimal-250713-linux612.iso) did not work.

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Check this post that I think is similar to your problem: Bluetooth speaker - everything looks fine but no sound

It seems to be a problem in the kernel.

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Confirmed. It was the kernel. In my case, I load different kernel from 6.15.6-1 to 6.15.0_rt2-1 and now my bluetooth speaker work again. Thank you!

Kernels 6.12.39 and 6.15.7 have now been released to Stable branch
Manjaro Forum - Announcements - [Stable Update] 2025-07-20

Downgrading kernel workaround is probably not needed

the kernel 6.15.7 des not fix it

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Just checked and yes, 6.15.7 does not include the patch. The patch was introduced on the 16 of july and the 6.15.7 was released on the 17th. So it is interesting. Maybe couldn’t make it in time. The patch is here:

https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git/commit/?id=514f29ce5bf37160f6f4e124a9cc06ca77cd5ab1

PS: Kernel 6.16-rc7 has the patch.

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