[PD] BUG in Linux/ALSA midi connection handling?
nettings at stackingdwarves.net
Wed Jun 20 15:07:29 CEST 2012
there's this very annoying problem of PD autoconnecting to all available
midi ports when using ALSA midi on Linux. since it wisely decides to
also connect to all internal midi thru ports, it immediately enters an
infinite midi loop on startup as soon as there is any controller with
but there is a deeper underlying problem apparently: for every midi
message that gets sent out, the corresponding port is reconnected. i
guess that's not very scalable. i found this out by watching the
qjackctl logs - they spit out one reconnection line for every outgoing
as suggested by claude heiland-allen in another thread (subject "pure
data midi autoconnect"), i'm now invoking pd with "-alsamidi -mididev
1,1", which prevents autoconnection.
***interestingly, it also prevents the constant re-connection to the
alsa sequencer ports on every outgoing message.***
i think this might be a hint that something is wrong somewhere in the
alsa sequencer glue in pd.
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