1.19 Controlling Sound
YaST automatically identifies and configures the sound cards in your
computer. You can also use the YaST Hardware module to configure your
sound card manually. When your sound card has been configured, you can
control the volume and balance of the sound with the GNOME Volume Control
If the mixer icon (a loudspeaker symbol) is not visible in the panel on
your desktop, press Alt+F2 and enter
gnome-volume-control, or click .
Figure 1-24 GNOME Volume Control Dialog Box
The GNOME Volume Control dialog box contains the following elements:
The items on the menubar contain all of the commands that you need to
work with the GNOME Volume Control.
The display area contains the channel faders and associated options for
several mixers, which enable you to control the volume on those mixers.
GNOME Volume Control populates the display area dynamically, based on
the functionality supported by your sound card. The mixers displayed in
your GNOME Volume Control window might be different to those shown in
To increase the volume, slide the fader up. To decrease the volume, slide
the fader down. To lock the left and right mixer channels together,
option for that mixer. When you lock
the mixer channels, GNOME Volume Control synchronizes both faders. To
silence a mixer, select the option for that
mixer. When you adjust the fader of a muted channel, GNOME Volume Control
deselects the Mute option for that mixer.
Any mixer that has a Rec option can be a recording source. To specify the
current recording source, select the Rec option for that mixer.