upgraded to 9.10 and now have no volume

Please send us the output from step 3 and step 4 from this procedure:

https://help.ubuntu.com/community/SoundTroubleshootingProcedure

Please also specify the exact model and make of pc that you are using.

A dell desktop computer. I do not know how to do steps 3 and 4. I need help.

Here is info on using the Terminal:

https://help.ubuntu.com/community/UsingTheTerminal#Starting%20a%20Terminal

Simply copy-paste the commands from step 3 and step 4 into the Terminal and send us the full output.

hugofrog@hugofrog-desktop:~$ wget -O alsa-info.sh http://212.20.107.51/alsa-info.sh
--2009-11-26 11:06:37-- http://212.20.107.51/alsa-info.sh
Connecting to 212.20.107.51:80... connected.
HTTP request sent, awaiting response... 302 Found
Location: http://git.alsa-project.org/?p=alsa-driver.git;a=blob_plain;f=utils/alsa-info.sh [following]
--2009-11-26 11:06:37-- http://git.alsa-project.org/?p=alsa-driver.git;a=blob_plain;f=utils/alsa-info.sh
Resolving git.alsa-project.org... 212.20.107.51
Reusing existing connection to 212.20.107.51:80.
HTTP request sent, awaiting response... 200 OK
Length: unspecified [text/plain]
Saving to: `alsa-info.sh'

    [ <=> ] 26,584 33.6K/s in 0.8s

2009-11-26 11:06:39 (33.6 KB/s) - `alsa-info.sh' saved [26584]

hugofrog@hugofrog-desktop:~$
hugofrog@hugofrog-desktop:~$ bash alsa-info.sh --pastebin bash alsa-info.sh --pastebin cat /proc/asound/cards; sudo aptitude install paman gnome-alsamixer alsa-utils flashplugin-nonfree-extrasound; aplay -l; sudo lshw -C sound; ls -lart /dev/snd; cat /dev/sndstat; lspci -nn; sudo which alsactl; sudo fuser -v /dev/dsp /dev/snd/* ; dpkg -S bin/slmodemd; lsmod | grep snd

Please also try this to better control you sound settings devices https://answers.launchpad.net/ubuntu/+source/alsa-driver/+question/91979

Hth