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Getting Started with the GNOME Desktop
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Figure 1-17
GNOME Volume Control Dialog Box
The GNOME Volume Control dialog box contains the following elements:
Menubar:
The items on the menubar contain all of the commands that you need to work with the
GNOME Volume Control.
Display area:
The display area contains the channel faders and associated options for several
mixers, which enable you to control the volume on those mixers.
NOTE:
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
Figure 1-17 on page 47
.
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, select the
Lock
option for that mixer. When you lock the
mixer channels, GNOME Volume Control synchronizes both faders. To silence a mixer, select the
Mute
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.
1.16 Managing Software Packages and Updates
The Novell ZENworks
®
tools serve as graphical front-ends for the ZENworks Management
Daemon (zmd), allowing you to easily install or remove software, apply security updates, and
manage services and catalogs.
1.16.1 Getting Permissions
Managing packages on a Linux system requires
root
privileges. Software Updater and rug (a new
command line tool for installing and updating packages) have their own user management system
that allows users to install software updates. When a user first invokes an action that requires special
privileges in the ZENworks tools, a prompt for the
root
password appears. When the password has
been verified, Software Updater automatically adds the user's account to the user management
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