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disable all sound permanently?

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disable all sound permanently?

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2

I've got a lab for high school students and I'd like to disable audio altogether on the lab computers.

Any suggestions ? I've been looking at alsa force-unload, but that only kills processes that are currently using the soundcard. When I reload the browser and hit youtube, sound comes back.

Basically I want to unload sound from the kernel ...but easier than that.

sound

share|improve this question

asked 8 hours ago

ether_joeether_joe

49844 silver badges77 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Don't if it would work but would think if you disable/delete or blacklisted the audio/sound drivers in kernel. Would need to be root to disable/enable. Easiest way would be to set sound to mute in settings, but anybody can do/undo that. I am not good enough to explain how.
  
  – crip659
  8 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Maybe put blacklist snd in a file /etc/modprobe.d/blacklist-snd.conf? AFAIK all the snd modules depend on it (and it depends on soundcore -- see modinfo snd, so perhaps that's the one to blacklist) and I think it's responsible for loading up the sound cards, so in theory without it you shouldn't have any sound possible (unless someone has sudo on modprobe). Argh, you beat me too it!
  
  – pbhj
  7 hours ago
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Cut the speaker wire :) KISS
  
  – EODCraft Staff
  16 secs ago
  

  
  
  
  

add a comment
 | 

2

I've got a lab for high school students and I'd like to disable audio altogether on the lab computers.

Any suggestions ? I've been looking at alsa force-unload, but that only kills processes that are currently using the soundcard. When I reload the browser and hit youtube, sound comes back.

Basically I want to unload sound from the kernel ...but easier than that.

sound

share|improve this question

asked 8 hours ago

ether_joeether_joe

49844 silver badges77 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Don't if it would work but would think if you disable/delete or blacklisted the audio/sound drivers in kernel. Would need to be root to disable/enable. Easiest way would be to set sound to mute in settings, but anybody can do/undo that. I am not good enough to explain how.
  
  – crip659
  8 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Maybe put blacklist snd in a file /etc/modprobe.d/blacklist-snd.conf? AFAIK all the snd modules depend on it (and it depends on soundcore -- see modinfo snd, so perhaps that's the one to blacklist) and I think it's responsible for loading up the sound cards, so in theory without it you shouldn't have any sound possible (unless someone has sudo on modprobe). Argh, you beat me too it!
  
  – pbhj
  7 hours ago
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Cut the speaker wire :) KISS
  
  – EODCraft Staff
  16 secs ago
  

  
  
  
  

add a comment
 | 

I've got a lab for high school students and I'd like to disable audio altogether on the lab computers.

Any suggestions ? I've been looking at alsa force-unload, but that only kills processes that are currently using the soundcard. When I reload the browser and hit youtube, sound comes back.

Basically I want to unload sound from the kernel ...but easier than that.

sound

share|improve this question

asked 8 hours ago

ether_joeether_joe

49844 silver badges77 bronze badges

share|improve this question

asked 8 hours ago

ether_joeether_joe

49844 silver badges77 bronze badges

share|improve this question

asked 8 hours ago

ether_joeether_joe

49844 silver badges77 bronze badges

asked 8 hours ago

ether_joeether_joe

49844 silver badges77 bronze badges

asked 8 hours ago

ether_joeether_joe

49844 silver badges77 bronze badges

3 Answers
3

active

oldest

votes

2

This seems to work. Edit the file /etc/pulse/client.conf

Change the line:

; autospawn = yes

to

autospawn = no

And

; daemon-binary = /usr/bin/pulseaudio

to

daemon-binary = /usr/bin/pulseaudio

Reboot.

share|improve this answer

answered 8 hours ago

guillermo chamorroguillermo chamorro

72411 silver badge1313 bronze badges

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Every user could override the settings in /etc/pulse/cliet.conf with his/her own settings in ~/.config/pulse/client.conf, please take a look at man pulse-client.conf.
  
  – mook765
  8 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  So after this change, audio is still playing -- there are just no audio controls any more so volume is 100% . Thanks for the suggestion though. I think alsa just took over when pulse went away.
  
  – ether_joe
  8 hours ago
  

  
  
  
  

add a comment
 | 

2

All right, so blacklisting the sound related modules worked. Thanks to this post:

http://www.pc-freak.net/blog/disabling-sound-kernel-modules-debian-ubuntu-gnu-linux-servers/

The details of the fix:

edit /etc/modprobe.d/snd-blacklist.conf and add these entries (from a Dell standalone pc with 18.04)

blacklist soundcore
blacklist snd
blacklist snd_pcm
blacklist snd_hda_codec_hdmi
blacklist snd_hda_codec_realtek
blacklist snd_hda_codec_generic
blacklist snd_hda_intel
blacklist snd_hda_codec
blacklist snd_hda_core
blacklist snd_hwdep
blacklist snd_timer

share|improve this answer

answered 7 hours ago

ether_joeether_joe

49844 silver badges77 bronze badges

add a comment
 | 

0

A hardware solution: insert a mini-jack connector in the sound output port, but only a connector, without any wire or speaker on it. This has worked for me since the 80's to silence the Mac's otherwise beautiful power-on ding.

share

answered 9 mins ago

KlaymenDKKlaymenDK

18511 silver badge1010 bronze badges

add a comment
 | 

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2

This seems to work. Edit the file /etc/pulse/client.conf

Change the line:

; autospawn = yes

to

autospawn = no

And

; daemon-binary = /usr/bin/pulseaudio

to

daemon-binary = /usr/bin/pulseaudio

Reboot.

share|improve this answer

answered 8 hours ago

guillermo chamorroguillermo chamorro

72411 silver badge1313 bronze badges

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Every user could override the settings in /etc/pulse/cliet.conf with his/her own settings in ~/.config/pulse/client.conf, please take a look at man pulse-client.conf.
  
  – mook765
  8 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  So after this change, audio is still playing -- there are just no audio controls any more so volume is 100% . Thanks for the suggestion though. I think alsa just took over when pulse went away.
  
  – ether_joe
  8 hours ago
  

  
  
  
  

add a comment
 | 

2

This seems to work. Edit the file /etc/pulse/client.conf

Change the line:

; autospawn = yes

to

autospawn = no

And

; daemon-binary = /usr/bin/pulseaudio

to

daemon-binary = /usr/bin/pulseaudio

Reboot.

share|improve this answer

answered 8 hours ago

guillermo chamorroguillermo chamorro

72411 silver badge1313 bronze badges

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Every user could override the settings in /etc/pulse/cliet.conf with his/her own settings in ~/.config/pulse/client.conf, please take a look at man pulse-client.conf.
  
  – mook765
  8 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  So after this change, audio is still playing -- there are just no audio controls any more so volume is 100% . Thanks for the suggestion though. I think alsa just took over when pulse went away.
  
  – ether_joe
  8 hours ago
  

  
  
  
  

add a comment
 | 

This seems to work. Edit the file /etc/pulse/client.conf

Change the line:

; autospawn = yes

to

autospawn = no

And

; daemon-binary = /usr/bin/pulseaudio

to

daemon-binary = /usr/bin/pulseaudio

Reboot.

share|improve this answer

answered 8 hours ago

guillermo chamorroguillermo chamorro

72411 silver badge1313 bronze badges

; autospawn = yes

autospawn = no

; daemon-binary = /usr/bin/pulseaudio

daemon-binary = /usr/bin/pulseaudio

share|improve this answer

answered 8 hours ago

guillermo chamorroguillermo chamorro

72411 silver badge1313 bronze badges

answered 8 hours ago

guillermo chamorroguillermo chamorro

72411 silver badge1313 bronze badges

answered 8 hours ago

guillermo chamorroguillermo chamorro

72411 silver badge1313 bronze badges

2

All right, so blacklisting the sound related modules worked. Thanks to this post:

http://www.pc-freak.net/blog/disabling-sound-kernel-modules-debian-ubuntu-gnu-linux-servers/

The details of the fix:

edit /etc/modprobe.d/snd-blacklist.conf and add these entries (from a Dell standalone pc with 18.04)

blacklist soundcore
blacklist snd
blacklist snd_pcm
blacklist snd_hda_codec_hdmi
blacklist snd_hda_codec_realtek
blacklist snd_hda_codec_generic
blacklist snd_hda_intel
blacklist snd_hda_codec
blacklist snd_hda_core
blacklist snd_hwdep
blacklist snd_timer

share|improve this answer

answered 7 hours ago

ether_joeether_joe

49844 silver badges77 bronze badges

add a comment
 | 

2

All right, so blacklisting the sound related modules worked. Thanks to this post:

http://www.pc-freak.net/blog/disabling-sound-kernel-modules-debian-ubuntu-gnu-linux-servers/

The details of the fix:

edit /etc/modprobe.d/snd-blacklist.conf and add these entries (from a Dell standalone pc with 18.04)

blacklist soundcore
blacklist snd
blacklist snd_pcm
blacklist snd_hda_codec_hdmi
blacklist snd_hda_codec_realtek
blacklist snd_hda_codec_generic
blacklist snd_hda_intel
blacklist snd_hda_codec
blacklist snd_hda_core
blacklist snd_hwdep
blacklist snd_timer

share|improve this answer

answered 7 hours ago

ether_joeether_joe

49844 silver badges77 bronze badges

add a comment
 | 

All right, so blacklisting the sound related modules worked. Thanks to this post:

http://www.pc-freak.net/blog/disabling-sound-kernel-modules-debian-ubuntu-gnu-linux-servers/

The details of the fix:

edit /etc/modprobe.d/snd-blacklist.conf and add these entries (from a Dell standalone pc with 18.04)

blacklist soundcore
blacklist snd
blacklist snd_pcm
blacklist snd_hda_codec_hdmi
blacklist snd_hda_codec_realtek
blacklist snd_hda_codec_generic
blacklist snd_hda_intel
blacklist snd_hda_codec
blacklist snd_hda_core
blacklist snd_hwdep
blacklist snd_timer

share|improve this answer

answered 7 hours ago

ether_joeether_joe

49844 silver badges77 bronze badges

blacklist soundcore
blacklist snd
blacklist snd_pcm
blacklist snd_hda_codec_hdmi
blacklist snd_hda_codec_realtek
blacklist snd_hda_codec_generic
blacklist snd_hda_intel
blacklist snd_hda_codec
blacklist snd_hda_core
blacklist snd_hwdep
blacklist snd_timer

share|improve this answer

answered 7 hours ago

ether_joeether_joe

49844 silver badges77 bronze badges

answered 7 hours ago

ether_joeether_joe

49844 silver badges77 bronze badges

answered 7 hours ago

ether_joeether_joe

49844 silver badges77 bronze badges

0

A hardware solution: insert a mini-jack connector in the sound output port, but only a connector, without any wire or speaker on it. This has worked for me since the 80's to silence the Mac's otherwise beautiful power-on ding.

share

answered 9 mins ago

KlaymenDKKlaymenDK

18511 silver badge1010 bronze badges

add a comment
 | 

0

A hardware solution: insert a mini-jack connector in the sound output port, but only a connector, without any wire or speaker on it. This has worked for me since the 80's to silence the Mac's otherwise beautiful power-on ding.

share

answered 9 mins ago

KlaymenDKKlaymenDK

18511 silver badge1010 bronze badges

add a comment
 | 

A hardware solution: insert a mini-jack connector in the sound output port, but only a connector, without any wire or speaker on it. This has worked for me since the 80's to silence the Mac's otherwise beautiful power-on ding.

share

answered 9 mins ago

KlaymenDKKlaymenDK

18511 silver badge1010 bronze badges

share

answered 9 mins ago

KlaymenDKKlaymenDK

18511 silver badge1010 bronze badges

answered 9 mins ago

KlaymenDKKlaymenDK

18511 silver badge1010 bronze badges

answered 9 mins ago

KlaymenDKKlaymenDK

18511 silver badge1010 bronze badges