qjackctl

What is the point of the Audio Device selectors (in Setup > Settings, and Setup > Settings > Advanced)?

If you can connect anything to anything, what mechanism do these control?

Hi everyone,

I'm using Qjackctl for my degree. I am able to connnect with other people, but i can't disable the imput monitoring. I ear myself deleyed even if I have the input monitoring on my device disabled.
Can you please help me in finding a solution?
Thank you all,

FC

Hello,

title is pretty self explanatory, the graph view keeps forgetting my setup and the patchbay view seems do do nothing, connections shown in this image

https://i.imgur.com/fgzswnj.png

using qjackctl 0.9.4 on windows 10 2004 with bitwig in jack mode and reaper in asio mode

Under the Qjackctl Graph view it shows two of every device attached. And further to this there is no way to deleted them and they are placed at far ends of the view requiring multiple scrolling left and right. Sometimes one device is way WAY down the bottom requiring dragging the scroll bar at left enormous amounts, vis a vis for the horizontal scroll too.

Is there something wrong with this view and its image controls?

Thanks

When using the graph window to make connections it is usually responsive.

I loaded DrumGizmo into Ardour and this creates a lot of input/output ports and wires between them. The graph window is now unusably laggy. There is a delay between dragging a wire and the wire appearing. This gets progressively worse the higher the zoom setting. The more I zoom in the more laggy the graph window becomes.

I'm using Arch linux and QjackCtl 0.9.2

Hi Rui,

I fired-up the new QjackCtl-0.9.2 release (AppImage) and it pops-up the Messages window and Error dialog with the following displayed in red:

20:59:34.553 D-BUS: SetParameterValue('engine:clock-source', 'h'): Parameter value type mismatch: was expecting 'u', got 'y'. (org.jackaudio.Error.InvalidArgs)

You can dismiss the Error dialog and start-up appears to continue OK but I thought you might want to know about this.

I have a Raspberry Pi 4 I am using with Qtractor. I have success starting Qjackctl and Qtractor with a USB Babyface Pro interface, but would like to simplify my setup. I really just want to record MIDI with my iConnectMIDI interface and see a realtime view of notes (playback out of the headphone output using any synth would be nice too).

I do not understand how to get Jack/Qjacktl setup for:
-MIDI Play/Record: iConnectMIDI1 MIDI interface
AND
-AUDIO Playback only: bcm2835 Headphones (built in Raspberry pi audio)

Hi I am coming here as a last resort. I cannot seem to get Jack to operate at 48000 sample rate or for that matter anything other than 44100.

My hardware is Focusrite Scarlett 18i8 Gen 2. It is set at 48000 it is recognised by my system and all inputs and outputs work perfectly. However regardless of what sample rate I set in the various config files for Alsa, and jackd it starts always as 44100. Every config file I can find has default set at 48000.

Hi,

I'm using Jack API in a synthesizer c++ program I'm developing running over a Raspberry Pi 4.
Sample rate is 44100 ( jackSampleRate = jack_get_sample_rate(client_out); )
Buffer size is set to 512 ( jack_set_buffer_size(client_out, _JACK_AUD_PERIOD_SIZE); ) (#define _JACK_AUD_PERIOD_SIZE 512).
Calculated process callback rate is 512/44100 = 11.6mSec.
Actually, process callback is initiated every 5.8mSec (with nframes = 512).

Any idea why the process callback rate is x2 than I expect it to be? (or my assumption is wrong? Why?)

Thanks,

Nahum