Novell LINUX ENTERPRISE DESKTOP 10 SP2 - DEPLOYMENT GUIDE 08-05-2008 Deployment Manual page 601

29.3.1 Software
The necessary kernel modules are included in the kernel package. The package irda
provides the necessary helper applications for supporting the infrared interface. Find
the documentation at /usr/share/doc/packages/irda/README after the in-
stallation of the package.
29.3.2 Configuration
The IrDA system service is not started automatically when the system is booted. Use
the YaST IrDA module for activation. Only one setting can be modified in this module:
the serial interface of the infrared device. The test window shows two outputs. One is
the output of irdadump, which logs all sent and received IrDA packets. This output
should contain the name of the computer and the names of all infrared devices in
transmission range. An example for these messages is shown in Section 29.3.4,
"Troubleshooting" (page 586). All devices to which an IrDA connection exists are listed
in the lower part of the window.
IrDA consumes a considerable amount of battery power, because a discovery packet
is sent every few seconds to detect other peripheral devices. Therefore, IrDA should
only be started when necessary if you depend on battery power. Enter the command
rcirda start to activate it or rcirda stop to deactivate it. All needed kernel
modules are loaded automatically when the interface is activated.
If preferred, configure manually in the file /etc/sysconfig/irda. This file con-
tains only one variable, IRDA_PORT, which determines the interface to use in SIR
mode.
29.3.3 Usage
Data can be sent to the device file /dev/irlpt0 for printing. The device file /dev/
irlpt0 acts just like the normal /dev/lp0 cabled interface, except the printing data
is sent wirelessly with infrared light. For printing, make sure that the printer is in visual
range of the computer's infrared interface and the infrared support is started.
A printer that is operated over the infrared interface can be configured with the YaST
printer module. The printer is not detected automatically and you have to configure it
Wireless Communication 585