Starting and Stopping Services

To start the Services Settings dialog box, select System O Administration O Services from the Panel menu. Figure 18-5 shows the main Services Settings dialog box.

Figure 18-5: The Services Settings dialog box.

As you can see from Figure 18-5, there's not much to the Services Settings dialog box. It lists the services you can control, with a check box for each service. The services that are already set to start when the system boots have a check mark in the box. You can set the service to not start at boot time by unchecking the box.

Similarly, you can select a new service to start at boot time by checking its box. The Ubuntu system adds the service to the list to start when the system boots. If it was successful, the check mark remains in the box. If it wasn't successful in setting the service, the check mark disappears. If that happens, you'll need to look at the messages log file using the System Log Viewer (discussed earlier, in the "Log Files" section of this chapter) to find any error messages indicating why the service couldn't start.

Table 18-3 shows the services you can control from the Services Settings dialog box.

Table 18-3: The Services Settings Dialog Box Services

Service

Name

Description

anacron

Actions scheduler

Schedules background processes for future days

atd

Actions scheduler

Schedules background processes for a later time in the same day

alsa-utils

Audio settings manager

Provides a common software interface for audio hardware

apport

Automated crash reports support

Debugging tool for producing reports when the system crashes

bluetooth

Bluetooth device manager

Interfaces with Bluetooth devices

britty

Braille display manager

Interfaces with Braille reading devices

klogd

Kernel event logger

Logs events from the Linux kernel

syslogd

Application activity logger

Logs events from processes running on the system

powernowd

CPU frequency manager

Controls the speed of the processor to conserve power on laptops

gdm

Graphical login manager

Provides the graphical login screen

hotkey-setup

Hotkeys manager

Detects type of keyboard in use and configures special keys

avahi-daemon

Multicast DNS service discovery

Detects devices on the network

acpid

Power management

Uses the Advanced Configuration and Power Interface to query and control battery life

apmd

Power management

Uses the Advanced Power Management system to query and control battery life

dbus

System communication bus

Provides a communications channel for applications to send and receive messages

The Ubuntu boot process is somewhat complicated because not all services start at the same time when you boot. You can define when specific services start, using the Properties feature of the Services Settings dialog box, discussed next.

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