linux - No sound from SuperCollider with Jack2 -


note: similar not same supercollider not audible on headphone, because issue not restricted headphones, , fix question (remapping system:playback_{3,4}) not apply situation

i trying use supercollider (on linux), unable hear sound it. jackdbus running, , supercollider able connect no error. here output when (re-)boot supercollider server

booting 57110 jackdriver: client name 'supercollider' sc_audiodriver: sample rate = 48000.000000, driver's block size = 1024 jackdriver: connected  system:capture_1 supercollider:in_1 jackdriver: connected  system:capture_2 supercollider:in_2 jackdriver: connected  supercollider:out_1 system:playback_1 jackdriver: connected  supercollider:out_2 system:playback_2 supercollider 3 server ready. jackdriver: max output latency 42.7 ms receiving notification messages server localhost shared memory server interface initialized

however, when play sound, continue see no errors, hear nothing. playing sound tutorial prints post window

synth("temp__9" : 1000)

at same time, audio other applications works fine. routed through pulseaudio jack, described in "the new new way" here https://wiki.archlinux.org/index.php/pulseaudio/examples#pulseaudio_through_jack

here output of jack_lsp -c

system:capture_1    pulseaudio jack source:front-left    supercollider:in_1 system:capture_2    pulseaudio jack source:front-right    supercollider:in_2 system:playback_1    pulseaudio jack sink:front-left    supercollider:out_1 system:playback_2    pulseaudio jack sink:front-right    supercollider:out_2 pulseaudio jack sink:front-left    system:playback_1 pulseaudio jack sink:front-right    system:playback_2 pulseaudio jack source:front-left    system:capture_1 pulseaudio jack source:front-right    system:capture_2 supercollider:in_1    system:capture_1 supercollider:in_2    system:capture_2 supercollider:in_3 supercollider:in_4 supercollider:in_5 supercollider:in_6 supercollider:in_7 supercollider:in_8 supercollider:out_1    system:playback_1 supercollider:out_2    system:playback_2 supercollider:out_3 supercollider:out_4 supercollider:out_5 supercollider:out_6 supercollider:out_7 supercollider:out_8

how can find out why hear nothing supercollider?

i had similar problem , fixed running "qjackctl" terminal, , in settings, change interface:

screenshot of settings in qjackctl:

enter image description here


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