Currently we have sounds to tests speakers for front center, light, right and so on, that will be used by e.g. gnome-control-center's sound setting to test speakers. For mono speaker test (i.e. bluetooth headsets HFP/FSP) audio-test-signal.oga is used, which can easily be mistaken as broken audio (hint: I did). It would be nice to have a dedicated mono test file.
NB: gnome's control center tries to look for a "audio-channel-mono" (and also "audio-channel-front-left-of-center", "audio-channel-front-right-of-center", which we also don't have).
See also bug 28962 There's no maintainer for this package. Best would be to ask Lennart to vouch for commit access and ask for that access.
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