Acer 5830g no sound on speaker but headphones works.

[vuquangtam]

@oldcpu

kmixer is ok … I use it also all the time. I do note thou that alsamixer often has different controls that can be useful.

That suggests the speaker volume control should have worked. However only by running the diagnostic script immediately after running amixer is it possible to tell/confirm the mixer is still setup properly.

I have no application called pavumixer. Hence I am not aware of what you refer to.

that could mean right channel and left channel. Its possible it means Master volume and PCM volume (both of which need to be turned up) but I suspect it more likely Right and left channels.

A window screen shot of the image, perhaps uploaded to http://imagebam.com , might be easier to depict what you note.

Thus far, I have not been able to rule out a poor mixer configuration, because every script output you have provided indicates the mixer misconfigured.

wrt testing your sound, you could run a ‘speaker-test’ or try an ‘aplay’ application (so to bypass pulse and take that out of the equation) or both

Try each of these when it comes to testing your audio:

speaker-test -c2 -twav

and press to cancel.

and also try this:

aplay -vv somefile.wav 

where ‘somefile.wav’ needs to be replaced with the name of a wav file on your PC. For example this should work:

aplay -vv /usr/share/sounds/alsa/test.wav

where the file test.wav should be located in directory aplay -vv /usr/share/sounds/alsa/

thank for your infomation, i run both speaker-test and aplay, my speaker still doesn’t work, but headphone works, this is my diagnostic infomation after run amixer command : http://www.alsa-project.org/db/?f=2fa5038e386a18ad830694480b7b7863b3142b8d… im sorry about pavumixer, what i mean is pavucontrol:P
oh, about the KDE mixer, i cant capture the picture when i open the KDE mixer, i use fn+PrtSc to capture…
about when I test by aplay and speaker-test command, i see the signal in the pavucontrol :
http://postimg.org/image/54cqi2171/full/