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Quantum Jumping
Asked: 2013-07-28 03:52:42 +0800 CST

What is a "Failed to load module "module-ladspa-sink"" error?

  • 772

When I put in the terminal pulseaudio appears:

E: [pulseaudio] module-ladspa-sink.c: Master sink not found
E: [pulseaudio] module.c: Failed to load module "module-ladspa-sink" (argument: "sink_name=ladspa_output.mbeq_1197.mbeq master=alsa_output.pci-0000_00_1b.0.hdmi-stereo plugin=mbeq_1197 label=mbeq control=3.0,3.0,7.3,7.0,3.0,-1.0,-6.6,-6.3,-4.5,-4.0,1.1,1.2,5.8,7.9,8.8"): initialization failed.
E: [pulseaudio] main.c: Module load failed.
E: [pulseaudio] main.c: Failure to start the daemon.

How I can fix it?

pulseaudio

5 Answers

  1. Best Answer

    I found this blog post with the same error and an explanation:

    A few days ago I started having issues with the equalizer that is, no sound. I removed the equalizer as well as ladspa-sdk. I promptly forgot about the whole thing until I rebooted and my machine began running super slow. Checking in syslog I found stuff like this:

    pulseaudio[3662]: module-ladspa-sink.c: Failed to load LADSPA plugin: file not found
pulseaudio[3662]: module.c: Failed to load module “module-ladspa-sink” (argument: “sink_name=ladspa_output.mbeq_1197.mbeq master=alsa_output.pci-0000_05_00.0.analog-stereo plugin=mbeq_1197 label=mbeq control=-0.2,-0.2,-0.2,-0.2,3.5,3.5,3.5,3.5,3.5,3.5,3.5,2.5,2.5,0.0,0.0″): initialization failed.
pulseaudio[3662]: main.c: Module load failed.
Failed to initialize daemon.
pulseaudio[3660]: main.c: Daemon startup failed

    Clearly the equalizer had left something behind when I removed it. Turned out the problem was in ~/.pulse/default.pa. The file had been modified in the install and not removed with it. The offending lines were at the end of the file. They looked like:

    ### Generated from: pulseaudio-equalizer
load-module module-ladspa-sink sink_name=ladspa_output.mbeq_1197.mbeq master=alsa_output.pci-0000_05_00.0.analog-stereo plugin=mbeq_1197 label=mbeq #control=-0.2,-0.2,-0.2,-0.2,3.5,3.5,3.5,3.5,3.5,3.5,3.5,2.5,2.5,0.0,0.0
set-default-sink ladspa_output.mbeq_1197.mbeq
set-sink-volume alsa_output.pci-0000_05_00.0.analog-stereo 65536
set-sink-mute alsa_output.pci-0000_05_00.0.analog-stereo 0
### END: Equalized audio configuration

    I commented out all lines shown by adding a # at the beginning of each line and saved the file. Problem solved.

    So in short:

    sudo nano ~/.pulse/default.pa

    scroll down to the line shown in the quote and add a # in front of all the lines. Save and exit.

    In newer versions, this file could also be at ~/.config/pulse/default.pa.

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  2. By a distro upgrade I had a corrupt pulseaudio configuration in my home folder in the ~/.config/pulse folder, receiving the same errors as you. I just moved the complete folder into a backup folder. Pulseaudio immediately created a new fresh config folder by its autospawn function. I had sound again! :)

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  3. In addition to @rinzwind's answer (remove or comment out the lines about ladspa), run pulseaudio-equalizer to regerate configuration.

    The overall problem is caused, probably, by the audio card replacement or other changes in hardware (that caused itself the changes in PCI address of audio card). I faced the same problem when put my HDD with Ubuntu into another laptop, but did the steps above and this made a trick.

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  4. Its better you should use pulseaudio-equalizer and run this command :

    pulseaudio-equalizer enable

    This makes the auido profiles to come back.

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  5. Just writing in to say that Rinzwind's answer still worked for me in 2019 after installing pulseaudioequalizer messed something up. I had to uninstall it first but then deleting the config folder and restarting my computer did the trick.

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