@seraphiscain said in (RetroPie X86) How to change global lr- emulator volume?:
Is there any way to get the setting in /opt/retropie/configs/all/retroarch.cfg to actually apply to all lr- emulators?
They should apply to all lr- emulators. Unless you've used 'Save Configuration' for one of them, in which case they won't, since that would break the inclusion of said .cfg file - see https://retropie.org.uk/docs/RetroArch-Configuration/#config-hierarchy.