Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange
The results are in! See what nearly 90,000 developers picked as their most loved, dreaded, and desired coding languages and more in the 2019 Developer Survey.

Questions tagged [jack]

JACK Audio Connection Kit (or JACK; a recursive acronym) is a professional sound server daemon that provides real-time, low latency connections for both audio and MIDI data between applications that implement its API.

0
votes
1answer
28 views

Simple way to connect midi keyboard to pulseaudio without using Jack

I need a simple way to connect the midi keyboard to pulse audio and leave it active. ( i'm not worried about low latency.) So far, I've looked at Ted's Linux MIDI Guide and followed all of that, but ...
1
vote
2answers
99 views

No sound with headphones in Linuxmint 19.1

There is not sound anymore in my headphones (jack connection) even though it used to work. During my last session, I did quite a lot of tweaks on my installation, so far, here is what I could ...
0
votes
0answers
39 views

Trying to make loopback device as Alsa-to-Jack bridge

Using this guide i trying to make loopback device as Alsa-to-Jack bridge. Everything fine until those lines # capture client alsa_in -j cloop -dcloop # playback client alsa_out -j ploop -dploop On ...
0
votes
0answers
11 views

Port error on Ardour

I’m running Ubuntu Studio 18.10. In Ardour 5.12,.0-3. connecting to Jack, or ALSA, when I close a project then try to open another one, I get an error message that says “unable to create port: failed ...
0
votes
1answer
40 views

Loop audio file from the command line (gapless) or into new file

The only command line solution for gapless playback I found so far (working with ALSA and JACK) is moc (»music on console«). While I'm still searching for a simpler way I was wondering if it is ...
0
votes
0answers
18 views

Gstreamer - problem with mkv playback and jack

I use gst123 as my regular audio and video player. I'm now using a Saffire 6 USB interface, which works out of the box using jack so I select jack as audio-output device with the -a option like this: ...
2
votes
2answers
219 views

Setting up Ardour/JACK on Mint/Ubuntu

Full context I would like to set up Ardour and mess around a bit on a keyboard-as-in-music which I got a while ago, turned out not to need, but couldn't return. When I try to start Ardour, with a new ...
1
vote
1answer
20 views

Starting application before firewire device is ready

To use an audio application requiring jackd-firewire, I have to start up things in the following order: Power up the hardware interface (a Phonic mixing console in my case) Start jackd Start the ...
1
vote
1answer
113 views

Print and connect Jack Audio and MIDI ports from the command line

How do I print and connect jack-audio and midi ports from the command line, similar to aconnect -io or aconnect 20:0 132:1 for inputs and outputs of ALSA MIDI?
3
votes
1answer
731 views

Using a Bluetooth speaker as output for JACK audio connection kit [closed]

I want to know if it is possible, to use a Bluetooth Audio Device (mine is a AMP from SURE electronics) as a output for JACK. Currently i am only aware of the pulseaudio-bluetooth module and the ...
2
votes
0answers
53 views

Inconsistent behaviour with udev and “su -c ”

I have a JACK server set up in my computer to take care of all the sound inputs and outputs. When I connect an external USB sound card (name: CODEC), I want it to be detected by udev, so I setup udev ...
0
votes
0answers
191 views

Linux and the Fender Mustang GT guitar amp series

Note: To ward off any of the inevitable confusion that can arise here it is important to distinguish the old series of Fender Mustang amps (has plenty of support and info on the internet) from the GT ...
0
votes
1answer
12 views

Qjckctl doesn't see soundcard in Connections page [closed]

When I try to setup JACK with Qjckctl, I can go into Setup and find my soundcard: However, once I start JACK and go onto the Connections page, I can't see my soundcard: I thought this might be ...
0
votes
1answer
605 views

Pulseaudio and Jack: cant start jack on pop!os

I am running an application that needs jack, so obviously I install jack! However when trying to start jack with qjackctl I get a huge running list of errors: 12:30:04.152 Statistics reset. 12:30:04....
0
votes
0answers
241 views

connecting M-Audio USB midi keyboard

I have a M-Audio Keystation 61es USB keyboard, and I could not manage to make it work under Linux despite a reasonable amount of trying. My system is Linux Mint 17.2 (rafaela). My laptop is an Asus ...
0
votes
2answers
1k views

Starting jackd at startup [duplicate]

I am running a headless raspberry pi system, that will eventually be a generative music player. I am now trying to get jackd to run at startup but not entirely sure how. I can run the command jackd ...
0
votes
1answer
108 views

jalv equalizer (eq10q) mutes sound when running (among other errors)

I'm trying to use a sound equalizer in Debian Jessie. I already have pulseaudio installed, so I thought about pulseaudio-equalizer, but it seems it's only available for Debian Stretch. So I'm trying ...
1
vote
0answers
103 views

Example setup for zita-njbridge in multicast mode?

Do you have a working zita-njbridge triplet of command lines (one n2j, two j2n) proven to run in multicast mode, which you might share? I'd like to study a working example, to compare to my special ...
0
votes
1answer
53 views

Toggling between Speaker and Microphone : Automatic conversion of microphone to speaker and back in continuous loop

I did go through hdajackretask and alsa project to retask my headphone to microphone. But what I am wondering if its possible to continuously alternate between microphone and head-phone using script? ...
0
votes
1answer
85 views

Jack Audio suppress output with every connection

I am running jack on arch linux. Whenever any application on my system connects to jack it dumps out a bunch of information like this: Jack: jack_client_close Jack: JackClient::Close ref = 8 Jack:...
0
votes
1answer
199 views

how to route 2 instances of mpd in 2 separate pairs(stereo) of output (playback) ports in pulse audio

I want basically to output one instance of mpd (a stereo signal) to line out (front) , and another instance of mpd to line out (rear). It appears that no pulse audio tutorial deals with this case (...
0
votes
1answer
109 views

Huge gain using jack2

OS: Manjaro, Gnome 3 version Audio interface: M-audio fast track pro (USB interface) Microphone: Condenser (48V phantom power) (the model is behringer C-3), connected via XLR When I try to record ...
2
votes
1answer
831 views

Docker with real-time / low-latency audio? (for virtual amps like Guitarix…)

I've been trying to get a foss virtual guitar amp to run on my Fedora machine for a while now, Guitarix (which runs on JACK) to be more precise. But I just can't figure it out. People say that it is ...
5
votes
2answers
10k views

Headphones with combo jack: Force internal mic for input and headphones for output

Linux systems have been having a historical (>5 yrs) problem in configuring audio devices especially commonplace headphones with combo jacks. Since many people want to use their favorite linux systems ...
1
vote
1answer
1k views

JACK/Pulseaudio: Output audio from JACK source to headphones (how to route different audio to different soundcards)

I want to play a metronome audio tick out of the built-in headphone port, while playing an audio stream out of a USB soundcard. How can I do this? Deeper context: JACK is running the USB soundcard, ...
4
votes
1answer
2k views

alsamixer / pulseaudio choose internal mic over mic jack

I have laptops running Debian stretch / pulseaudio version 10.0-1 on which I'd like to choose the internal microphone over the mic jack. When I plug my headphone which includes a microphone through ...
4
votes
1answer
3k views

How to disable white noise with headphones in Dell XPS [closed]

How can I disable white noise in Dell XPS 13 when headphones to 3.5mm audio jacket are connected? Every time time I connect headphones to 3.5mm audio jacket I hear constant white noise from ...
1
vote
1answer
458 views

Normal audio stops when jackd starts

Awhile ago I set up Pulseaudio and JACK to play nicely together on Arch Linux so I could switch between them. The problem is some JACK apps must be completely restarted when jackd is restarted, which ...
1
vote
1answer
218 views

How to troubleshoot lack of audio playback?

Given a Linux machine for which no app or command produces sound, and an arbitrarily messed up configuration involving an arbitrary non-empty subset of ALSA, JACK, and Pulse, how to investigate the ...
1
vote
2answers
1k views

Remove everything jack related

I made the stupid mistake to install jack2 while using pulseaudio. The audio wasn't working at all (and I realized I didn't need Jack) so I decided to remove jack2. Now I do have sound (with the ...
2
votes
0answers
505 views

jackd and SuperCollider headless problem

I am trying to boot an RPi autonomously to start jackd, SuperCollider and then play a SuperCollider patch. Jack launches and Supercomputer starts to compile but then something goes wrong. The script ...
1
vote
1answer
393 views

Configuring a system to run PulseAudio automatically on top of JACK

This is essentially the same as the Ask Ubuntu question How to use JACK and Pulseaudio/ALSA at the same time on the same audio device?. However, the answers to that question are all incomplete in at ...
1
vote
1answer
296 views

linux audio feedback

I am using jackd and pulseaudio with the pulseaudio-jack-module so that I can have pulseaudio and jack running at the same time. I mostly use jack applications, except for web browsing and a few other ...
3
votes
1answer
2k views

alsa sound module snd_aloop

I am having some trouble wrapping my head around the snd_aloop module. I am trying to route all my audio through alsa without using pulseaudio. If I start jackd there's not sound from non alsa apps ...
2
votes
1answer
188 views

Possible race condition when scripting headphone plug-in event

I'm currently trying to script the headphone plug-in/out event. I found out that I can script this quite easily as an acpi event.. I created a file in /etc/acpi/events/ with the event event=jack[ /]...
1
vote
0answers
185 views

Treat multiple sound input sources as one virtual microphone

I want to automate my home using Jasper. To do that, the documentation tells me to edit the ALSA config file so a usb card will have index 0. I want to use multiple microphones spread around my house....
0
votes
1answer
17 views

How can software that doesn't natively support JACK be made to work with it?

Audacity, for example, can be switched to JACK if needed. What about software that can't but can be switched to alsa?
1
vote
0answers
98 views

recordMyDesktop can't use jackd for audio

If I try to have recordMyDesktop (technically qt-recordMyDesktop) capture audio via jackd, when I hit record it immediately stops with the message: recordMyDesktop has exited with status: 4352 ...
2
votes
0answers
1k views

pavucontrol: Connection to PulseAudio failed

After uninstalling JACK I lost my access to PulseAudio Volume Control. It says: I tried purging and reinstalling pulseaudio and pavucontrol and removing ~/.pulse-cookie and ~/.pulse. Also, I tried ...
0
votes
1answer
621 views

Jack and Raspberry Pi

Attempting to write some small midi programs with rtmidi on my Raspberry PI (Debian Wheezy). But, when I compile it, g++ cannot find jack/jack.h. However, when I run sudo apt-get install jackd it ...
2
votes
0answers
747 views

USB Audio detected by ALSA but not JACK?

I have a Presonus AudioBox USB device, connected to a USB 3 port, that supports both MIDI and Audio input. When I launch JACK and open the connection list from QJackCtl, I can see that the AudioBox ...
2
votes
0answers
978 views

USB MIDI keyboard (Oxygen 61) now not appearing in QJackCtl

I've had a USB Oxygen61 MIDI keyboard for awhile now, and it has worked fine in the past (maybe a month ago, last I tried). But now when I plug it in, it no longer shows up in aconnect -l, and I can'...
5
votes
2answers
4k views

What are XRuns?

I have read about them several times and encounter them myself when setting the buffer size too low in jack or quitting audio applications. Nobody ever explains though what XRuns are. Can someone ...
1
vote
0answers
111 views

How to join the two input streams of a multidevice soundcard?

I have an old M-Audio Blackbox that consists of two sub-devices. If I open qjackctl those are advertised as hw:Box,0 and hw:Box,1. Up to now I readily switched between those configurations as needed, ...
0
votes
0answers
610 views

No sound with audio jack

I am using a Debian wheezy on Netbook eeepc 1001px After last kernel update When I plug the audio jack, I can here the electric charge but no sound when I remove it the internal speaker works ...
1
vote
1answer
535 views

Plug dmix into JACK

There are several guides of how to use JACK with ALSA dmix plugin, like this and this. All of them suggest to route the JACK output through dmix, which causes a latency to the jackified programs. To ...
1
vote
1answer
300 views

AmSynth 1.5.1 with jack and alsa (JACK init failed: error: could not open ALSA MIDI interface)

I built and compiled amSynth 1.5.1 from source. I then started qjackctl and ran amsynth from command line, but it produced the following error. JACK init failed: error: could not open ALSA MIDI ...
2
votes
1answer
778 views

JACK can't play ardour along with any other media

I recently downloaded Ardour2, and it appears that JACK cannot run Ardour along with any other media (Rhythmbox, YouTube, Pandora, etc.). The symptoms are as follows: If Ardour is the first thing I ...
1
vote
1answer
1k views

Jack not recognizing MIDI device

Jack does not recognize my MIDI keyboard, whereas ALSA does. Here are the logs : pi@raspberrypi / $ jack_lsp system:playback_1 system:playback_2 LinuxSampler:midi_in_0 LinuxSampler:0 ...
3
votes
1answer
1k views

How to configure which sound card jack2 will use

I've installed jack2 as a substitution for jack from official repositories (I'm on Arch Linux): # pacman -S jack2 I need to use jack2 because it provides jackd (it's needed for another application), ...