I switched by #oneplus6 on #postmarketOs edge back to pulseaudio and disabling the suspend on idle like explained here https://wiki.postmarketos.org/wiki/OnePlus_6_(oneplus-enchilada)#Audio_in_calls But it is eating much more battery. I have seen @gnumdk posting a patch upstream that might help (and probably help with pipewire), curious to know what the status here, or if there are better workarounds (my previous one is to reboot after each call with pipewire as the first call never fail)