Fedora :: Jack Audio - Rakarrack Guitar Effect Causes Sound To Distort
Nov 10, 2010
I noticed that any CPU load, while using Rakarrack guitar effects, causes the sound to distort and it generates loads of noise. This actually happens when using anything while running Jack audio. If I'm recording, I get tons of noise on the recorded track when I play it back (and live when monitoring) because any CPU usage seems to interfere with the signals. It even does it live in the playthrough (monnitor).
I realized it had to do with CPU usage when I noticed a pattern with the noise correlating to the plasma CPU monitor widget I had running originally. The noise refreshed when the monitor did. Since then, I noticed that anything that puts a slight load on the system will cause this disruption (even moving a window around, or anything in the background processes).
Anyone who is experienced with Jack audio, and possibly rakarrack as well, know the cause to this? I figured loading a low resource WM and eliminating unneeded processes can help but it doesn't since the recording program itself, while recording, is enough to cause this problem. (I know this because playing the guitar in Rakarrack, without recording and just using Jack to run the sound to the speakers, doesn't have constant noise but when recording, there is a constant noise)
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Sep 30, 2010
I have everything installed and Jack working fine. I'm in the user group and have realtime enabled and running. My problem is that I can't get my input (the guitar) through rakarrack and out. This is how it is set up:
Guitar is plugged in directly through the Input jack on the sound card (I have tried with the front input, rear, front mic, and rear mic inputs)
I have kde mixer set to allow pass-through of the sound from the input source (I can hear the guitar in my speakers, un-amplified directly from the source). The problem is that I cant get this source into rakarrack with jack to save my life. I have tried all sorts of combinations both physically with the audio jacks and in jack audio. Is that Jack isn't detecting the right input source with alsa or something?
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Mar 23, 2011
I'm using a fedora install mainly for audio work and have everything working well out of the box. My setup is simple:
-Direct cable from Guitar 1/4" > Sound Card input>Rakarrack Guitar Effects>Ardour>System Out
(Occasionally I put a synth/plugin like Zynaddsubfx or jackrack before or after rakarrack depending on what sound I'm going for)
-Jack for all audio transport with synthesizers
I have real time support with Jack and all other programs except Rakarrack. When I launch Rakarrack in the terminal, I get this message:
Code:
rakarrack 0.6.1 - Copyright (c) Josep Andreu - Ryan Billing - Douglas McClendon - Arnout Engelen
Try 'rakarrack --help' for command-line options.
Cannot lock down memory area (Cannot allocate memory)
Cannot use real-time scheduling (RR/15)(1: Operation not permitted)
AcquireRealTime error
However, running rakarrack in root does not display this output, and I assume it has no problem getting real-time scheduling in that case. I did some google searches but the only similar issues that I find are that people can't get RT support in jack except in my instance, I do have RT scheduling with jack, but for some reason I can't get it in rakarrack unless I'm root.
[Edit] I actually have to run jackd and rakarrack in root to get rakarrack to use real time scheduling. But, it isn't necessary for any other jack compatible program that I know of. I'm actually not getting any real time scheduling with any jack application, even though Jack is reporting to be running in Real Time. However, running everything in root fixes the issue even though I would prefer to not have to run as root.
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Dec 27, 2010
I have a 1080p video card installed via PCIe and can't seem to get sound to work on my big screen tv unless i use a audio jack and stereo.
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Mar 15, 2010
I am running Karmic (9.10) on an MSI U120 Wind. I dislike netbook-remix but that is beside the point.
Last night I made the biggest mistake of my life which is causing a loss of still counting hours. I decided to do an update, due to having enough bandwidth, and security updates to download.
So it finished, and I went to sleep.
This morning I went to plug in my speakers to the audio jack so I can listen to music loud, and it was all distorted. I changed al 8 or 9 volume controls and nothing. I unplugged the wire from the audio jack, and the sound is perfect on my netbook's speakers.
I have tried different wires, speakers, editing config files, removing and purging related packages, and nothing works...
I have been google-ing for hours and everyone seems to have the same problem, but all of the supposed fixes do not work for me...
Here is a pastebin of my Alsa info : [URL]
I fear switching back to winblowz..
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Jan 3, 2010
I upgraded to Ubuntu 9.10 recently to find that my computer will not play mp3 files in Rythmbox, Amarok, or Kaffeine media players. All of the FLAC files I have ripped from CDs work, but no mp3 files work. I have downloaded and installed the ubuntu restricted codecs from Synaptic as well as the codecs prompted by Rythmbox rebooted, and still no result.Like I said, the .FLACs play fine.On another note, no sound is being transmitted to my earbuds. The only sound will come from the laptop speakers.
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Aug 20, 2010
Desktop machine Dell OptiPlex 330n running Ubuntu Lucid 10.04 LTS.
Code:
Distributor ID:Ubuntu
Description:Ubuntu 10.04.1 LTS
Release:10.04
Codename:lucid
Code:
Linux IBDesk06 2.6.32-24-generic #41-Ubuntu SMP Thu Aug 19 01:12:52 UTC 2010 i686 GNU/Linux
It is Intel mobo.
Code:
chaitanya@IBDesk06:~$ lspci -v | grep Audio
00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High Definition Audio Controller (rev 01)
The problem is, when I connect the headphones to the from panel audio jack, only right headphone works. Left one has no sound. But if I connect same to the main jack at the back of the machine, everything works fine. Both headphones have sound.
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Jul 20, 2010
I'm a complete Linux newbie - only installed it yesterday, and have spent hours trying to get my M-Audio Firewire Solo sound card to work. I can hear nothing at all. I know nothing of Linux, but am willing to learn. While I learn though, it would be nice to listen to a little Hall & Oates. I've got to the stage where the error messages I'm receiving don't bring up any results on Google. Here's what things look like (watch out, big pic):
Those sample rate errors appear in the terminal when I start ffado-mixer. I'm running JACK with everything set as I think it's supposed to be, except that 'Realtime' is unchecked.If I start JACK running with 'Realtime' checked, it tries to launch and fails, saying "JACK is running in realtime mode, but you are not allowed to use realtime scheduling. After applying these changes, please re-login in order for them to take effect". I don't know what more it wants me to do - i've already added
@audio � rtprio 100
@audio - nice -10
@audio � memlock unlimited
to /etc/security/limits.conf, and selected the 2.6.31-11-rt kernel on GRUB bootup. I'm a member of 'audio' and 'disk' groups like'm supposed to be. Have I not got the connections right in JACK? Have I got some sample rate settings wrong somewhere?I'm not even bothered about low latency with the realtime kernel right now, I just want to hear some sound
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Feb 5, 2011
I'm using audacity to record some songs and it works okay. However I use a Samson Go usb mic to pick up vocals and guitar, and i have a line out straight from my guitar. I can record from either by choosing which sound input I want to use in the Ubuntu sound preferences but I wanted to know if there was anyway I could select both and record both mic and jack simultaneously, is this possible??
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Mar 9, 2010
when I open Guitar Pro 5 in Wine (v1.1.40), there is no sound. I go into the audio settings to select Timidity, but it's not listed. I do have it installed and I can launch commands such as 'timidity anything.mid' to get it to play midi's, but other than that, it doesn't work. When I run Wine and launch Guitar Pro 5, I get this output:
Code:
ALSA lib conf.c:2700:(snd_config_hooks_call) Cannot open shared library libasound_module_conf_pulse.so
ALSA lib control.c:909:(snd_ctl_open_noupdate) Invalid CTL hw:0
ALSA lib pcm_dmix.c:947:(snd_pcm_dmix_open) The dmix plugin supports only playback stream
[code].....
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Jun 27, 2011
I've got an Acer Aspire 5101 with Natty on it and everything works so far, but I can't start Muse. It says: "Muse failed to find a jack audio server". At the bottom it also says: "...if Jack was started check if it was started as the same user as Muse". This might be the issue. But how can I check this? BTW: Jackd has been installed and I am a Member of the Audio Group.
I am new to Ubuntu and don't know how to fix this. I got this Notebook for free, because my Brother wanted to dispose it as it didn't worked properly after he reinstalled xp. Only the dvd-drive is broken, the rest is in really good condition for such an old thing. After a lot of trial and error I could finally install Natty from USB.
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Jan 18, 2010
I have used Linux off & on over the past 8-10 years, and last fall went full hog (no windows partition left!) on my IBM/Lenovo T61P (model 6457-B51) and am currently running Fedora 12 64-bit. It's been SOLID since last October. I did bail to the NVIDIA driver and the video performance is fantastic as well for my work usage of this system.
I have sound through the internal speakers and also through USB headsets, so it appears that pulseaudio, hated as it is, is working fine on this hardware. However, I CANNOT get any sound through the speaker jack! I get a hum anytime I attempt to use speakers connected to that jack - I have not tried a microphone on the mic jack, so I cannot speak to whether that works or not. This came to a head when I tried to play an audio file during a class and could not get the sound into the room speakers.
It's just odd that the OS is not able to talk to this port - this did work under Windows prior to my switch.
Worst case I guess I can find some USB speakers to use, but it would be handier to just plug into my guitar amp when I want some volume at home, and to be able to use other hardware as what happened last fall.
/sbin/lspci:
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Sep 14, 2010
I have a small problem with getting sound to come through my headphone jack with Fedora 13. I switched to Fedora 13 from uBuntu and I had the same problem on uBuntu. I fixed the problem, but I don't remember exactly how. I think it was something to do with editing the alsa audio conf file, but the file is named differently in Fedora. The sound works fine from the internal speakers, but when I plug in the headphones I get nothing. Anyways, I'm on an Asus EEE 1005HA using Fedora 13 32bit.
[code]...
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Jun 23, 2011
How to enable wooby effect (compiz desktop effect like ubuntu) in fedora 15.
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May 7, 2010
I have upgraded to 10.4 and and after try to install mac look in ubuntu.My screen start flickering, I found it this due to in system => preference => appearance => effect become no effect automatically (as each and every time I select extra effect)After some time.for changing this setting i need to turn off the computer and restart then after i can do it i.e. change effect to extra effect. Its done after following installation
[URL]
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Jun 7, 2011
After installing I was not able to get many of the audio programmes to work. After some reading, I realised that this was probably due to jack not starting.
I was unable to get jack to start normally but have been able to get it started with the playback only option selected. Programmes that use jack now work, however there is no sound once jack has been started. The sound does work in other programs when jack is not started. Strangely, I only have to open qjackctl for the sound to stop, and jack is not even started. Initially I thought these problems were due to my sound card not being supported, but I believe that alsa support was added for the via 1708 codec at some point. I found that support had been added in a document showing the changes between alsa versions; however I cannot find the exact model listed as a supported sound card on the alsa site.
I believe that altering jack settings could fix the problem, as i have been able to get audio to work in hydrogen by selecting plughw:0 but there is still no sound in other programs. I have tried altering many other settings but to no avail, however I do not really understand the meaning of the settings that i am adjusting.
Does anyone know what settings to adjust or know something else that might fix this problem so that sound works once jack has been started?
Also, would programmes that use jack such as audacity, hydrogen, and ardour work with pulseaudio as the main sound server if I were to install normal ubuntu - it might be worth seeing if my soundcard works with the puleaudio sound server
if this helps, here is the error message received when jack does not start when the normal duplex option is selected.
21:24:04.867 Patchbay deactivated.
21:24:04.868 Statistics reset.
21:24:04.886 ALSA connection change.
Cannot connect to server socket err = Connection refused
[Code].....
also, when i open alsamixer in the terminal for some reason the headphone part is greyed out, even when the sound is working before qjackctl is opened.
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Jun 24, 2011
I recently bought a set of 2.1 speakers, all is fine. I like to listen to my DAB radio through them. When I boot up, (runlevel 3), sound is there via the mic/line-in jack, but as soon as KDE starts, the sound cuts. I can get it back by:~>alsamixerand then F6 and then scroll to mic, switching to ON and slider up to full and then mic boost up to 65% or so.Can I tell something in KDE to default to mic/line-in on?kmix does not give the full picture I see in other's posts, like here:ImageShack® - Online Photo and Video Hostingjust a single slider under each tab, like this:
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Feb 16, 2009
I have installed Fedora 10-x86_64. I was happy and content with the distribution. Earlier, I found that there is no sound on my headphone's jack where as the normal sound output from my laptops's speakers is OK. I fiddled with the available mixers but couldnt get anything. There seem to be 5 different mixers (HDA, ALSA, OSS), 3 for the playback and 2 for the capture.
I am using an acer 4530 laptop. It has a nvidia Nforce MCP77 chipset. and the o/p lsmod| grep snd :
Code:
I did a alsa-info and upload the details at:[url]
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Aug 6, 2010
I have HP Pavilion laptop with two jack outs for audio and both of them work if only one is plugged in. If both of jacks are used, then in only one headphones set there is a sound. I would like to have sound on both of them, so for example two people can listen the same thing on their own headphones.
I'm working on Ubuntu 10.04 and my sound card is:
Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio Controller (rev 03)
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Apr 16, 2010
whenever I try and start it, it spits this at me: p, li { white-space: pre-wrap; } Could not connect to JACK server as client. - Overall operation failed. - Unable to connect to server. Please check the messages window for more info.its all greek to me I fiddled with some basic settings, but to no avail, I'm running a dell dimension 9150 with a stock soundcard. To be honest, I don't know what Jack is, but it opens when I open DJplay, so I'm guessing its like Asio4all when running deckadance?
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Jun 9, 2010
Here's the problem: My notebook's right speaker makes an awful sound when playing music. I want to configure the sound so as to get MONO and balanced to the left when I use the built-in speakers, and STEREO w/o balance when and plug a jack, ie: earplugs.
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Nov 1, 2010
Does anyone have any experience of forwarding audio from Ubuntu to Windows 7 x64 via JACK? I'm struggling to find any useful documentation. I've tried to accomplish the same using a Pulseaudio server, which is better documented but the windows binaries are years old and as far as I can tell can't be made to work without disabling IPv6. Any other ways to forward audio would also be welcome. Bandwidth isn't really an issue as it's VM to VM on the same machine.
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Nov 21, 2010
I try it for the first time. Befor I changed to linux I used MS Windows 7. There I worked much with SonyVegas for video and Adobe Auditon for music. Yesterday I searched for alternatives under Linux for Audition. And I found much. The screen shots says, that they look similar to Auditon. I downloaded them and installed them. But they doesn't work. One of them say they can't connect to Jack. Some of them say nothing, and so they don't record my line in/microphone input. After a few seconds I of search, I knew that all of these programs uses jack for Audio. I installed it, but the situation wasn't better. Then I found a wiki, and try that: first start jack, than start the program. So I do. But there i get a few error messages: At first I should copy to lines to the file lines.conf. I do it. Then I should be member of the audio group. I do that.
[Code]...
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Mar 9, 2011
I have had no problems whatsoever with audio in ubuntu 10.10. Both input and output have worked great, but alas now there's a problem.
I recently installed ardour2 with jack (using apt-get) but for some reason, anytime I start ardour2 (which starts jack implicitly) all audio stops on the whole computer. That is my computer goes silent. As soon as I exit ardour2 audio resumes.
Also, although this will probably resolve itself when I resolve the other problem, when exporting a project to audio file from ardour2 it exports silence for the entire duration, even when ardour2 is exited and audio has resumed.
I'm no linux novice, so I'm not afraid of command line solutions (I prefer them actually) however I know nothing about jack or audio editing in linux whatsoever, so if you could be very specific about jack terminology that would be great.
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Apr 18, 2011
I'm looking for configuring a Ubuntu box, we need to capture alsa output into ffmpeg with jack or OSS but not pulseaudio, as that tends to glitch badly. We have things working, but we are sort of hacking around in the dark, we play music, but as we aren't linux audio experts ourselves.
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Apr 20, 2011
happened and now half of the speakers plug is stuck in the back of my PC. cant get it out, because it's very deep. i decided to use the front jack for sound but it wont work.already tried alsa mixer and upgraded my kernel. i think the problem is that i need to somehow kill the jack in the back of PC because its still alive and sending signals to that half-dead jack
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Jun 4, 2011
I have had success with operating JACK, but I am still learning... I can get audio through my microphone into ubuntu and can record into audacity without a problem, however, I do not know how to get JACK to recognize the audio from the microphone (through the normal mic jack)... any ideas how I may accomplish this so I don't need to do all kinds of file conversions and imports to set down a vocal track with the tracks I record (via USB) through JACK?
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Feb 26, 2010
I'm a long time lurker but only a fairly recent registrant, so I'm not sure exactly how it goes for posting links to your own blog, but I recently wrote an article about setting up Jack Audio with GStreamer, Flash and VLC and I thought that some people here might be interested to read it.
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Feb 7, 2010
Why is there no opensuse jack audio client module for python like pyjack.
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Jun 24, 2010
Im a composer and I loaded up on some excellent applications for music creation and notation- so excited..
I start with Rosegarden. Failed to connect to JACK audio server. Try my other applications, same problem.
Basically the JACK audio server just WILL NOT RUN (correctly). I can sudo it and press start, but still it wont "play with" the applications! Heres the error message from JACK (I also get related errors when I try to do ANYTHING involving music creation):
error JACK Audio Connection Kit
-overall operation failed
-unable to connect to server
Here is the "fatal error" from MusE
"Failed to Find Jack Audio Server"
This is the JACK output:
[Code]...
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