Disable boot sound?

[Mr-Protocol]

Booting from a Live CD. How would you disable the sounds? On BT3 you could edit the boot menu with a --nosound and it would disables sounds. It sort of fits with the whole... "The quieter you become, the more you are able to hear..."

[trellis]

Disable ALSA/alsa-utils from boot and ARTS in KDE?

[Mr-Protocol]

No clue what you just said.

On backtrack 3 i just had to hit "tab" at the boot menu and add --nosound at the end and boot up and all sounds were disabled.

[ColForbin]

Please wait for someone who knows what they're talking about, but...

... Couldn't you just use this blog entry, edit /etc/modprobe.d/blacklist, and blacklist all sound modules.

root@bt:~# lsmod |grep snd
snd_hda_codec_idt 55764 1
snd_hda_intel 24712 0
snd_hda_codec 57204 2 snd_hda_codec_idt,snd_hda_intel
snd_hwdep 6776 1 snd_hda_codec
snd_pcm_oss 37728 0
snd_mixer_oss 14324 1 snd_pcm_oss
snd_pcm 67704 3 snd_hda_intel,snd_hda_codec,snd_pcm_oss
snd_seq_dummy 2424 0
snd_seq_oss 27328 0
snd_seq_midi 5952 0
snd_rawmidi 19488 1 snd_seq_midi
snd_seq_midi_event 5972 2 snd_seq_oss,snd_seq_midi
snd_seq 47568 6 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_mid i_event
snd_timer 19068 2 snd_pcm,snd_seq
snd_seq_device 6048 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi ,snd_seq
snd 50468 12 snd_hda_codec_idt,snd_hda_intel,snd_hda_codec,snd_ hwdep,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_seq_os s,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
soundcore 5856 1 snd
snd_page_alloc 7836 2 snd_hda_intel,snd_pcm

- And then recompile the ISO?

Again. Wait for someone who knows for sure. Don't break your system on my account.

-- Okay. I did a simple experiment on my machine. I issued the command:

~# rmmod snd_hda_intel

Then I browsed to SomaFM and opened one of the stations. The station opened in vlc, without sound.

Then I went back to the terminal and issued the command:

~# modprobe snd_hda_intel

Back in vlc, I stopped the streaming station, and then started it. Voila! Sound was back.

That being said, if I were trying to recompile a custom BackTrack DVD on my system, I'd use that blog post up there, add the line:

blacklist snd_hda_intel

to /etc/modprobe.d/blacklist, recompile the ISO and go from there. That's all theory, of course.

[Archangel-Amael]

Upgrade to bt 4 final there is no support here for 3

[Mr-Protocol]

I am using BT4 Live CD. I was just refering how it was done on BT3 and wondering how it's done on BT4.

[Snayler]

No clue what you just said.

On backtrack 3 i just had to hit "tab" at the boot menu and add --nosound at the end and boot up and all sounds were disabled.

BT Menu > Settings >Sound & Multimedia > Sound System
Disable the "Enable the sound system" box.

[Barry]

That's all fine and dandy, until he reboots. He's using the live cd.

@OP

Type alsamixer before startx. You'll be able to turn down the volume before you startx.

[Snayler]

That's all fine and dandy, until he reboots. He's using the live cd.

I missed that part... Sorry.

@OP
Customizing Backtrack - Offensive Security
You can use some of the members methods associated with this tutorial to make a new liveCD with sound disabled by default.
Or you can just disable the boot theme and leave all the rest active, if that's what you want (title:disable boot sound). I believe there is an option to do this on BT's settings page.