How TO: fix no audio in ubuntu - Overclock.net

endo · 09-24-07

this is if you are using a sound card.

first step is to enter your bios. make sure that you on board audio is turned off. doing this may fix the problem but if it doesn't then try the rest of these steps.

next go to you /dev folder and make sure there is a file labeled for your sound card if there isnt one then i think your sound card is not installed and if there is more then one then you may still have on board audio turned on or other audio devices that are interfering with your audio.

Quote:

Originally Posted by reset3x

more info on how audio devices show up, in this post

Code:

now go to system -> preferences -> sound

you will see something like this.

set sound events, music and movies, and audio conferencing to Autodetect. if you hit test there should be a annoying tone. then default mixer tracks Device: should be set to what ever your sound card is.

now go to your terminal and type.

Code:

alsamixer

you will see something like this.

now turn every thing up one at a time. until you here sound. PCM should be turned all the way down or muted.

for something more simple instead of using the terminal for the previous step. go to the volume control icon that is defaulted to the upper rite of the panel on the desk top. rite click on it and open volume control.

if any of those are not there go to Edit -> preferences and add them and what ever else you might want to add. i turn the bass and treble all the way up but it is your preference but if things dont sound rite mute the one labeled PCM

Quote:

Originally Posted by skip-br

if you have a usb sound card check this post to see if it helps

Quote:

Originally Posted by Unknownm

If you have Realtek HD drivers check this post to see if it helps

[FH415] LOKI · 09-26-07

Thanks for the info, it helped alot +rep

endo · 09-26-07

Quote:

Originally Posted by [FH415] LOKI

Thanks for the info, it helped alot +rep

thats good. glad to here i can help.

[FH415] LOKI · 09-26-07

I have another problem i was wondering if you could help me with.
I can't get ubuntu to pickup my microphone, the volume bar and such are
there but theres no input like if im using teamspeak or ventrilo it doesn't
pickup my voice.

Any ideas?

endo · 09-26-07

that im not sure about because my mic worked rite away. i wold start a topic on that and ask reset3x if he knows what to do.

[FH415] LOKI · 09-26-07

ok will do thanks :]

tUDJ · 09-29-07

Quote:

Originally Posted by endo

make sure there is a file labeled dsp if there isnt one then i think your sound card is not installed

So then what?

reset3x · 09-29-07

Quote:

Originally Posted by endo

next go to you /dev folder and make sure there is a file labeled dsp if there isnt one then i think your sound card is not installed and if there is more then one then you still have on board audio turned on

This is not always the case! It was specific to your hardware configuration. If you use just onboard sound it may show up as /dev/dsp. Subsequent sound devices may appear as /dev/dsp1 etc.. and so on... Other devices that may appear include :

/dev/audio

normally a link to /dev/audio0
/dev/audio0

Sun workstation compatible audio device (only a partial implementation, does not support Sun ioctl interface, just u-law encoding)
/dev/audio1

second audio device (if supported by sound card or if more than one sound card installed)
/dev/dsp

normally a link to /dev/dsp0
/dev/dsp0

first digital sampling device
/dev/dsp1

second digital sampling device
/dev/mixer

normally a link to /dev/mixer0
/dev/mixer0

first sound mixer
/dev/mixer1

second sound mixer
/dev/music

high-level sequencer interface
/dev/sequencer

low level MIDI, FM, and GUS access
/dev/sequencer2

normally a link to /dev/music
/dev/midi00

1st raw MIDI port
/dev/midi01

2nd raw MIDI port
/dev/midi02

3rd raw MIDI port
/dev/midi03

4th raw MIDI port
/dev/sndstat

displays sound driver status when read (also available as /proc/sound, removed in 2.4 kernels)

The PC speaker driver provides the following devices:

/dev/pcaudio

equivalent to /dev/audio
/dev/pcsp

equivalent to /dev/dsp
/dev/pcmixer

equivalent to /dev/mixer

Not a slam at your thread!!! just more info

Peace!!

Slackware 12 · 09-29-07

also, 'alsaconf' will allow you to configure sound. thats the console way. in slackware anyway.

skip-br · 09-30-07

Im using a usb sound card (Sennheiser PC155) and its picked as device #2, sometimes #1.

[Edit]
To properly fix it, I've changed the alsa-base file...

Code:

sudo gedit /etc/modprobe.d/alsa-base

from

Code:

options snd-usb-audio index=-2

to

Code:

options snd-usb-audio index=0

And also created a ~/.asoundrc file with (got it somewhere googling)

Code:

pcm.dmixed {
	type dmix
	ipc_key 1024
	slave {
	    pcm "hw:0,0"
	    period_time 0
	    period_size 1024
	    buffer_size 4096
	    rate 44100
	}
	bindings {
	    0 0
	    1 1
	}
   }
  
   #one called "dsnooped" for capturing
   pcm.dsnooped {
	type dsnoop
        ipc_key 5978293	# must be unique for all dmix plugins!!!!
        ipc_key_add_uid yes
        slave {
                pcm "hw:0,0"
		channels 2
		period_size 1024
		buffer_size 4096
		rate 44100
		periods 0 
		period_time 0
        }
        bindings {
                0 0
                0 1
        }
   }
  
   #and this is the real magic
   pcm.asymed {
       type asym
       playback.pcm "dmixed"
       capture.pcm "dsnooped"
   }
  
   #a quick plug plugin for above device to do the converting magic
   pcm.pasymed {
       type plug
       slave.pcm "asymed"
   }
  
   #a ctl device to keep xmms happy
   ctl.pasymed {
       type hw
       card 0
   }
  
   #for aoss:
   pcm.dsp0 {
       type plug
       slave.pcm "asymed"
   }
  
   ctl.mixer0 {
       type hw
       card 0
   }

That makes my sound card being detect always as device #0 and makes my microphone works.

By the way.... if I set the audio settings as "auto detect" it just crash.

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How TO: fix no audio in ubuntu

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