"volume control GStreamer plugins and/or device not found"-how do I get volume contro
 

how do I get volume control gstreamer on my Ubuntu. my computer expertise is very small

The first thing to check is if Ubuntu even sees your sound card. If you run 'alsamixer' in a terminal, do you get a mixer program or an error?

Adam

response in terminal
 

function snd_ctl_open failed for default: No such file or directory

So then Ubuntu isn't even seeing your sound card. Do you know what sound card you have?

No I don't know the sound card, but it was having another problem, had to shut down two times,and reboot, suddenlt, sound is back to normal.
Thanks for your replies and help

alsamixer
 

I went back to application/accessories/terminal and entered "alsamixer" and saw sound graph. my card is "Intel 82801CA-ICH3 Now I have abetter understanding. Thanks again

I have exactly the same problem on Debian Lenny. Except that my problem is not solved with rebooting. Nor my system seems to recognize that I have sound cards. What should I do?