My hardware is pretty new; I've installed Lubuntu 11.10 and there's no sound nor volume icon in tray. The sound works well in Ubuntu. What can I do about it? I have two sound cards in this laptop, and one of them is HDMI, maybe the problem is because of that? Please help me?! Thanks.
Lubuntu unlike Ubuntu does not make use of Pulseaudio. Instead it uses Alsa for sound.
Thus, it is likely you need to look at
alsamixer or its gui
alsamixgui to control which sound elements are enable or disabled.
You may also need to look at using
alsamixer as a startup application with the syntax similar to
amixer -c 1 sset "PCM Capture Source" "Line" - obviously you need to change the values to your sound source and output type.
Also - look to see if you have two sound cards - if you have, sometimes swapping the cards works:
sudo su cd /usr/share/alsa cp -p alsa.conf alsa.conf.dist sed -i 's/card 0/card 1/g' alsa.conf
I answered a LXDE sound-preferences question a while back which you may find useful.
As indicated in that answer, you could also install
pulseaudio and use
pavucontrol to control your pulseaudio setup.
As to a LXDE friendly volume control, my answer here is an accepted method you can try.
This is what I did to fix the issue:
Lubuntu shares many components with XFCE. My suggestion would be to use the XFCE4-Mixer. This still gives you a lightweight solution compatible with the lxde ethos.
sudo apt-get install xfce4-mixer gstreamer0.10-alsa
This installs the following limited number of xfce packages:
exo-utils libgarcon-1-0 libgarcon-common libwnck-common libwnck22 libxres1 xfce4-mixer xfce4-panel
xfce4-mixerin a lxterminal. In Options, in the Auto-Mute Mode drop-down menu, select "Disabled."