supriya not connecting to audio ins and outs via JACK #414

dayunbao · 2025-01-10T12:47:34Z

dayunbao
Jan 10, 2025

I'm trying to use supriya on Linux Mint 22, and have run into a few problems.

One was having to add myself to the audio group in order to get JACK to run in Real Time. That was an easy fix.

However, the ongoing problem is that supriya does not set up the needed connections to get audio routed correctly. SuperCollider does this correctly when I start the IDE.

These are two screenshots of JACK's Graph when not using JACK D-Bus.
SuperCollider when booting the server from the IDE:

SuperCollider when booting the server from supriya:

These are two screenshots of JACK's Graph when using JACK D-Bus.
SuperCollider when booting the server from the IDE:

SuperCollider when booting the server from supriya:

This is the output of SuperColliders logs in the IDE's post window:

Booting server 'localhost' on address 127.0.0.1:57110.
Jack: JackClient::SetupDriverSync driver sem in flush mode
Jack: JackLinuxFutex::Connect name = jack_sem.1000_default_SuperCollider
Jack: Clock source : system clock via clock_gettime
Jack: JackLibClient::Open name = SuperCollider refnum = 5
JackDriver: client name is 'SuperCollider'
Jack: JackClient::PortRegister ref = 5 name = SuperCollider:in_1 type = 32 bit float mono audio port_index = 11
Jack: JackClient::PortRegister ref = 5 name = SuperCollider:in_2 type = 32 bit float mono audio port_index = 12
Jack: JackClient::PortRegister ref = 5 name = SuperCollider:out_1 type = 32 bit float mono audio port_index = 13
Jack: JackClient::PortRegister ref = 5 name = SuperCollider:out_2 type = 32 bit float mono audio port_index = 14
Jack: jack_set_graph_order_callback ext_client ff948f30 client ff948f30 
SC_AudioDriver: sample rate = 48000.000000, driver's block size = 1024
Jack: JackClient::Activate
Jack: JackPosixThread::StartImp : create non RT thread
Jack: JackPosixThread::ThreadHandler : start
Jack: JackClient::kBufferSizeCallback buffer_size = 1024
Jack: JackClient::Init : period = 21333 computation = 100 constraint = 21333
Jack: JackPosixThread::AcquireRealTimeImp priority = 5
Jack: JackClient::ClientNotify ref = 5 name = SuperCollider notify = 2
Jack: JackClient::kActivateClient name = SuperCollider ref = 5 
Jack: JackClient::Connect src = system:capture_1 dst = SuperCollider:in_1
Jack: JackClient::ClientNotify ref = 5 name = SuperCollider notify = 18
Jack: JackClient::ClientNotify ref = 5 name = SuperCollider notify = 18
Jack: JackClient::ClientNotify ref = 5 name = SuperCollider notify = 4
Jack: JackClient::kGraphOrderCallback
Jack: JackClient::ClientNotify ref = 5 name = SuperCollider notify = 18
Jack: JackClient::ClientNotify ref = 5 name = SuperCollider notify = 18
Jack: JackClient::ClientNotify ref = 5 name = SuperCollider notify = 4
Jack: JackClient::kGraphOrderCallback
JackDriver: connected  system:capture_1 to SuperCollider:in_1
Jack: JackClient::Connect src = system:capture_2 dst = SuperCollider:in_2
JackDriver: connected  system:capture_2 to SuperCollider:in_2
Jack: JackClient::Connect src = SuperCollider:out_1 dst = system:playback_1
JackDriver: connected  SuperCollider:out_1 to system:playback_1
Jack: JackClient::Connect src = SuperCollider:out_2 dst = system:playback_2
JackDriver: connected  SuperCollider:out_2 to system:playback_2
SuperCollider 3 server ready.
Jack: JackClient::ClientNotify ref = 5 name = SuperCollider notify = 18
Jack: JackClient::ClientNotify ref = 5 name = SuperCollider notify = 18
Jack: JackClient::ClientNotify ref = 5 name = SuperCollider notify = 4
Jack: JackClient::kGraphOrderCallback
JackDriver: max output latency 42.7 ms

This is the output of some logging I did in supriya:

import logging
    logging.basicConfig()
    logging.getLogger("supriya.scsynth").setLevel(logging.DEBUG)


INFO:supriya.scsynth:[127.0.0.1:57110/0x743274a28cd0] booting ...
INFO:supriya.scsynth:[127.0.0.1:57110/0x743274a28cd0] command: /usr/bin/scsynth -R 0 -l 1 -u 57110
INFO:supriya.scsynth:[127.0.0.1:57110/0x743274a28cd0] received: Jack: JackClient::SetupDriverSync driver sem in flush mode
INFO:supriya.scsynth:[127.0.0.1:57110/0x743274a28cd0] received: Jack: JackLinuxFutex::Connect name = jack_sem.1000_default_SuperCollider
INFO:supriya.scsynth:[127.0.0.1:57110/0x743274a28cd0] received: Jack: Clock source : system clock via clock_gettime
INFO:supriya.scsynth:[127.0.0.1:57110/0x743274a28cd0] received: Jack: JackLibClient::Open name = SuperCollider refnum = 5
INFO:supriya.scsynth:[127.0.0.1:57110/0x743274a28cd0] received: JackDriver: client name is 'SuperCollider'
INFO:supriya.scsynth:[127.0.0.1:57110/0x743274a28cd0] received: Jack: JackClient::PortRegister ref = 5 name = SuperCollider:in_1 type = 32 bit float mono audio port_index = 11
INFO:supriya.scsynth:[127.0.0.1:57110/0x743274a28cd0] received: Jack: JackClient::PortRegister ref = 5 name = SuperCollider:in_2 type = 32 bit float mono audio port_index = 12
INFO:supriya.scsynth:[127.0.0.1:57110/0x743274a28cd0] received: Jack: JackClient::PortRegister ref = 5 name = SuperCollider:in_3 type = 32 bit float mono audio port_index = 13
INFO:supriya.scsynth:[127.0.0.1:57110/0x743274a28cd0] received: Jack: JackClient::PortRegister ref = 5 name = SuperCollider:in_4 type = 32 bit float mono audio port_index = 14
INFO:supriya.scsynth:[127.0.0.1:57110/0x743274a28cd0] received: Jack: JackClient::PortRegister ref = 5 name = SuperCollider:in_5 type = 32 bit float mono audio port_index = 15
INFO:supriya.scsynth:[127.0.0.1:57110/0x743274a28cd0] received: Jack: JackClient::PortRegister ref = 5 name = SuperCollider:in_6 type = 32 bit float mono audio port_index = 16
INFO:supriya.scsynth:[127.0.0.1:57110/0x743274a28cd0] received: Jack: JackClient::PortRegister ref = 5 name = SuperCollider:in_7 type = 32 bit float mono audio port_index = 17
INFO:supriya.scsynth:[127.0.0.1:57110/0x743274a28cd0] received: Jack: JackClient::PortRegister ref = 5 name = SuperCollider:in_8 type = 32 bit float mono audio port_index = 18
INFO:supriya.scsynth:[127.0.0.1:57110/0x743274a28cd0] received: Jack: JackClient::PortRegister ref = 5 name = SuperCollider:out_1 type = 32 bit float mono audio port_index = 19
INFO:supriya.scsynth:[127.0.0.1:57110/0x743274a28cd0] received: Jack: JackClient::PortRegister ref = 5 name = SuperCollider:out_2 type = 32 bit float mono audio port_index = 20
INFO:supriya.scsynth:[127.0.0.1:57110/0x743274a28cd0] received: Jack: JackClient::PortRegister ref = 5 name = SuperCollider:out_3 type = 32 bit float mono audio port_index = 21
INFO:supriya.scsynth:[127.0.0.1:57110/0x743274a28cd0] received: Jack: JackClient::PortRegister ref = 5 name = SuperCollider:out_4 type = 32 bit float mono audio port_index = 22
INFO:supriya.scsynth:[127.0.0.1:57110/0x743274a28cd0] received: Jack: JackClient::PortRegister ref = 5 name = SuperCollider:out_5 type = 32 bit float mono audio port_index = 23
INFO:supriya.scsynth:[127.0.0.1:57110/0x743274a28cd0] received: Jack: JackClient::PortRegister ref = 5 name = SuperCollider:out_6 type = 32 bit float mono audio port_index = 24
INFO:supriya.scsynth:[127.0.0.1:57110/0x743274a28cd0] received: Jack: JackClient::PortRegister ref = 5 name = SuperCollider:out_7 type = 32 bit float mono audio port_index = 25
INFO:supriya.scsynth:[127.0.0.1:57110/0x743274a28cd0] received: Jack: JackClient::PortRegister ref = 5 name = SuperCollider:out_8 type = 32 bit float mono audio port_index = 26
INFO:supriya.scsynth:[127.0.0.1:57110/0x743274a28cd0] received: Jack: jack_set_graph_order_callback ext_client 7c958f30 client 7c958f30 
INFO:supriya.scsynth:[127.0.0.1:57110/0x743274a28cd0] received: SC_AudioDriver: sample rate = 48000.000000, driver's block size = 1024
INFO:supriya.scsynth:[127.0.0.1:57110/0x743274a28cd0] received: Jack: JackClient::Activate
INFO:supriya.scsynth:[127.0.0.1:57110/0x743274a28cd0] received: Jack: JackPosixThread::StartImp : create non RT thread
INFO:supriya.scsynth:[127.0.0.1:57110/0x743274a28cd0] received: Jack: JackPosixThread::ThreadHandler : start
INFO:supriya.scsynth:[127.0.0.1:57110/0x743274a28cd0] received: Jack: JackClient::kBufferSizeCallback buffer_size = 1024
INFO:supriya.scsynth:[127.0.0.1:57110/0x743274a28cd0] received: Jack: JackClient::Init : period = 21333 computation = 100 constraint = 21333
INFO:supriya.scsynth:[127.0.0.1:57110/0x743274a28cd0] received: Jack: JackPosixThread::AcquireRealTimeImp priority = 5
INFO:supriya.scsynth:[127.0.0.1:57110/0x743274a28cd0] received: Jack: JackClient::ClientNotify ref = 5 name = SuperCollider notify = 2
INFO:supriya.scsynth:[127.0.0.1:57110/0x743274a28cd0] received: Jack: JackClient::kActivateClient name = SuperCollider ref = 5 
INFO:supriya.scsynth:[127.0.0.1:57110/0x743274a28cd0] received: Jack: JackClient::ClientNotify ref = 5 name = SuperCollider notify = 18
INFO:supriya.scsynth:[127.0.0.1:57110/0x743274a28cd0] received: Jack: JackClient::ClientNotify ref = 5 name = SuperCollider notify = 18
INFO:supriya.scsynth:[127.0.0.1:57110/0x743274a28cd0] received: SuperCollider 3 server ready.
INFO:supriya.scsynth:[127.0.0.1:57110/0x743274a28cd0] ... booted!
INFO:supriya.scsynth:[127.0.0.1:57110/0x743274a28cd0] received: Jack: JackClient::ClientNotify ref = 5 name = SuperCollider notify = 4
INFO:supriya.scsynth:[127.0.0.1:57110/0x743274a28cd0] received: Jack: JackClient::kGraphOrderCallback
INFO:supriya.scsynth:[127.0.0.1:57110/0x743274a28cd0] received: Jack: JackClient::ClientNotify ref = 5 name = SuperCollider notify = 18
INFO:supriya.scsynth:[127.0.0.1:57110/0x743274a28cd0] received: Jack: JackClient::ClientNotify ref = 5 name = SuperCollider notify = 18
INFO:supriya.scsynth:[127.0.0.1:57110/0x743274a28cd0] received: Jack: JackClient::ClientNotify ref = 5 name = SuperCollider notify = 4
INFO:supriya.scsynth:[127.0.0.1:57110/0x743274a28cd0] received: Jack: JackClient::kGraphOrderCallback

You can see that this is missing from supriya's scsynth logs:

JackDriver: connected  system:capture_1 to SuperCollider:in_1
Jack: JackClient::Connect src = system:capture_2 dst = SuperCollider:in_2
JackDriver: connected  system:capture_2 to SuperCollider:in_2
Jack: JackClient::Connect src = SuperCollider:out_1 dst = system:playback_1
JackDriver: connected  SuperCollider:out_1 to system:playback_1
Jack: JackClient::Connect src = SuperCollider:out_2 dst = system:playback_2
JackDriver: connected  SuperCollider:out_2 to system:playback_2

dayunbao · 2025-01-10T13:32:37Z

dayunbao
Jan 10, 2025
Author

OK, I found the solution. I placed this in my .bashrc file, and got audio playing:

export SC_JACK_DEFAULT_INPUTS = "system"
export SC_JACK_DEFAULT_OUTPUTS = "system"

0 replies

josephine-wolf-oberholtzer · 2025-01-14T19:47:45Z

josephine-wolf-oberholtzer
Jan 14, 2025
Maintainer

Cool. Looks like the solution wasn't supriya-specific?

0 replies

dayunbao · 2025-01-14T20:12:07Z

dayunbao
Jan 14, 2025
Author

Yes, and the problem was Linux specific, actually. Might be cool to have a note on the README about setting those environmental variables for Linux users.

…

On Tue, Jan 14, 2025, 8:48 PM Joséphine Wolf Oberholtzer < ***@***.***> wrote: Cool. Looks like the solution wasn't supriya-specific? — Reply to this email directly, view it on GitHub <#414 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ACVNNEQKGMXEOPIQYMWAKJ32KVSXPAVCNFSM6AAAAABU6JZ3JWVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTCOBTGU2DEOI> . You are receiving this because you modified the open/close state.Message ID: ***@***.*** .com>

0 replies

josephine-wolf-oberholtzer · 2025-01-14T20:15:07Z

josephine-wolf-oberholtzer
Jan 14, 2025
Maintainer

Maybe? But who is going to remember what it was about in 5 years... if it's not directly related to the library, I'm not convinced it should go anywhere. I'm not going to remember the context and will probably just delete it. Not trying to be difficult, just honest about long-term maintenance here.

0 replies

dayunbao · 2025-01-14T20:28:12Z

dayunbao
Jan 14, 2025
Author

Fair enough. Like I mentioned in my email, once I'm more familiar with supriya, I'll put together some simple tutorials for people. I'll mention setting the environmental variables for Linux in them.

…

On Tue, Jan 14, 2025, 9:15 PM Joséphine Wolf Oberholtzer < ***@***.***> wrote: Maybe? But who is going to remember what it was about in 5 years... if it's not directly related to the library, I'm not convinced it should go anywhere. I'm not going to remember the context and will probably just delete it. Not trying to be difficult, just honest about long-term maintenance here. — Reply to this email directly, view it on GitHub <#414 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ACVNNET6REKFXKGKDYMPEE32KVV6DAVCNFSM6AAAAABU6JZ3JWVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTCOBTGU3DIOI> . You are receiving this because you modified the open/close state.Message ID: ***@***.*** .com>

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