JACK is a low-latency sound server, allowing multiple applications to connect to one audio device, and to share audio between themselves. Many Professional-grade programs (such as Hydrogen and Ardour) on Ubuntu utilize JACK for maximum hardware compatibility and performance.

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Connect 4.1 speakers to Acer V3-571G with Ubuntu 12.10

I have the Acer Aspire V3-571G that has only 2 audio jack: 1 for headphone and 1 for microphone. Can I connect my Creative 4.1 speakers and have sound in all 5 channels? The problem is that speakers ...
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2answers
1k views

Using Jack audio and getting audio to play though headphones

I need to use Jack audio to prevent clicks but I'm having problems getting jack to play though my usb wireless g930 headphones. I'm using puredata and I can get my usb wireless g930 headphones to ...
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1answer
274 views

What changed with timidity, alsa and jack in 11.10?

I (just) upgraded from 11.4 to 11.10 and noticed some differences in the behavior of timidity. I used to (11.4) exectute >timidity midifile.midi without running jackd, and thus using alsa (or ...
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0answers
780 views

removing pulseaudio, moving to jack

I have installed jack because I want to use the LADSPA plugins available, in jackrack, for realtime audio processing. (I couldn't find any way to use them with pulseaudio) After much effort, I ...
3
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1answer
4k views

Unable to start jack (Cannot allocate memory)

I want to use PulseAudio on top of jack, so I've turned pulse off and now want to start jack using qjackctl. However, this results in the following error log: 22:14:15.933 Patch Panel disabled ...
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1answer
287 views

QJackCtl - Alsa Unknown driver

Here's my problem : I just have installed QJackCtl on my Ubuntu 12.04 and when I start Jack I got this issue : 12:01:22.769 /usr/local/bin/jackd -dalsa -dhw:0 -r44100 -p1024 -n3 -i1 -o2 Cannot ...
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3answers
4k views

Step-by-step to run a midi keyboard input device? 12.04

I have a Korg Nanokey, and I'd like to make it produce sound in ubuntu. I've read that means I should be using Rosegarden, and that Rosegarden uses JACK, but does not install it. (Although checking ...
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2answers
1k views

12.04 Ubuntu studio PREEMPT_RT kernel options

My audio processing needs require a preempt_rt kernel. I roughly followed the guide: https://wiki.ubuntu.com/KernelTeam/GitKernelBuild with a little help from: ...
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1answer
922 views

No sound on Rakarrack 6.0.1

I just installed Rakarrack and get no audio. I'm using Ubuntu 12.04 LTS. Help is appreciated.
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1answer
475 views

Are there any tutorials for Linux-based audio production? [closed]

I have been searching for a while for Linux based audio production tutorials. All I can find are tool based tutorials. For example I found tutorials on how to use jack, ardour, lmms ..etc. What I need ...
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3answers
172 views

What can I do about the fglrx driver interfering with jackd?

The jack-audio-connection-kit needs to run in realtime mode and my system is configured accordingly. I'm using the fglxr driver. With Unity-2d everything is fine. With Unity-3d, jack-clients ...
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1answer
637 views

QjackCtrl audio server starting. Focusrite Saffire PRO40 card start and no sound

QjackCtrl server is starting. Then the FW Active LED of the soundcard turn on. I try listenning to a Youtube video and I get no output sound. The card connection setup is working on Windows. Setup: ...
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3answers
723 views

Record audio from Skype on VPS?

I have impossible task to do! Going crazy! On fresh Ubuntu server 10.04. install, via SSH I've installed desktop and VNC server. Then Skype. Problem is that Ubuntu is VPS! And it don't have physical ...
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0answers
494 views

How do I get a MOTU 828 MK II working? [closed]

I recently installed Ubuntu 11.10, which is proving to be a nice OS - it's pretty fun to learn. I was wondering how to get Ubuntu to recognize my MOTU 828 Mk II firewire audio DSP (?) unit. It's ...
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2answers
1k views

Running jackd on startup / replacing PulseAudio

How can I replace PulseAudio with Jack? I want to start jackd on startup either during boot or during logon instead of PulseAudio.
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2answers
2k views

MIDI to VMPK to QSynth to Audio?

I'm currently using Jack (qjackctl) + VMPK + qSynth to try to simply jam a little bit on my keyboard on my Linux machine. I can see all of the inputs and outputs, but I'm still not getting any sound. ...
4
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1answer
876 views

How can I use Jack for all my system sounds?

I have a firewire soundcard (Phonic FireFly808 [not the "808-U" version!]) which I would like to use as my standard soundcard. From what I found out, it seems like only ffado could get this firewire ...
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1answer
886 views

JackD mutes PulseAudio

I use rakarrack for guitar effects and I want to listen mp3 playback (Banshee etc.) and midi (Tuxguitar etc.). But when I start rakarack it starts JACK and JACK mutes all other sound sources except ...
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0answers
242 views

Jackd does not work with winesasio and FL Studio [closed]

I'm trying to get FL Studio to work using wineasio and jackd, but so far: no luck. The problem lies with jackd and pulseaudio. I can start jackd and have pulseaudio piped through it, but no sound ...
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1answer
809 views

FA-66 sound card sometimes cuts out and stops working, causing me to restart Jack

I have setup Ubuntu 11.04 to use Jack and PulseAudio just to get sound working. It was a little tough, but I got it to work. Now as I use my computer - like Banshee, Youtube, or VLC - the FA-66 will ...
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2answers
10k views

Virtual MIDI Piano Keyboard setup

I installed Virtual MIDI Keyboard (vmpk) using apt-get install. I also have Jack control and Qsynth installed. When I open vmpk, I cannot hear the sound coming from it. How can I do the setting to let ...
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2answers
2k views

Can it be harmful to grant jackd realtime priority?

I am apt-get installing Ardour, a sound mixing program, just to try it out. Installing Ardour also installs JACK, a dependency. As part of the JACK installation script, I get the following dialog: ...
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4answers
29k views

Using microphone input port as headphone output

I have one audio output jack and one audio input jack on my laptop. I want to use it for real time audio mixing, and I need to have another discrete output for headphones that is independent of the ...
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1answer
2k views

Jackd fails to start

I'm trying to have a setup where JACK interfaces directly to ALSA and pulseaudio communicates to JACK. This setup worked OK (I had to manually start things a few times) but as I understood the Ubuntu ...
2
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1answer
251 views

Renoise and dssi and jack

This may be a little complicated, but, is jack a necessity? I mean, i use renoise, and, since i dont have the need for low latencies, do i really need to use it? My basic setup ( or workflow ) is ...
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2answers
601 views

DJPlay: No sound coming out

I installed JACK and DJPlay on Ubuntu 10.10, they seem to launch and connect fine. Then I open audio files in DJPlay, and start playing them, the oscilloscopes start moving. But no sound comes out. ...
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3answers
2k views

jack sound server how to?

how to setup jack sound server for any music program ?
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1answer
157 views

Copying default puredyne audio settings?

I would like to use Ubuntu as my main operating system but I get too many xruns when I run jack. I tried several solutions I found online but I could not solve the problem. I am very happy with the ...
5
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2answers
1k views

Jack and pulseaudio

I want to run pulseaudio from startup to deal with system sounds etc and be able to run jack from qjackctl for use with audio applications (LMMS, ardour, rosegarden etc) I'm having issues when i start ...