I'm going to say something horible, but to know the chip yu can try it under windows, or try lsusb, usbview if yu have a cmd not found simply put urpmi lsusb usbview .
after make a lsmod |grep ird
yu should see somethingh like this (my chip is a stir4200) :

irda                  121816  6 irlan,stir4200,irnet,sir_dev,ircomm_tty,ircomm
crc_ccitt               2688  1 irda

if not just do a modprobe modulenamemissing , for exemple modprobe ircomm_tty .
after this yu should have a /dev/ircomm0, if not yu can try this :
in /etc/init.d/ put a text file named : "irda" for exemple inside past this script :
#!/bin/sh
#
# irda          This shell script takes care of starting and stopping
#               IrDA support
#
# chkconfig: - 45 24
# description: IrDA(TM) (Infrared Data Association) is an industry standard \
# for wireless, infrared communication between devices. IrDA speeds range \
# from 9600 bps to 4 Mbps, and IrDA can be used by many modern devices \
# including laptops, LAN adapters, PDAs, printers, and mobile phones.
#
### BEGIN INIT INFO
# Provides: irda
# Short-Description: Infrared Data Association daemon
# Description: IrDA(TM) (Infrared Data Association) is an industry standard
#              for wireless, infrared communication between devices. IrDA speeds range
#              from 9600 bps to 4 Mbps, and IrDA can be used by many modern devices
#              including laptops, LAN adapters, PDAs, printers, and mobile phones.
### END INIT INFO

# Source function library.
. /etc/rc.d/init.d/functions

# Source IrDA networking configuration.
. /etc/sysconfig/irda

prog="IrDA"

start() {
        # Attach irda device
        gprintf "Starting %s: " "$prog"
    /sbin/modprobe ircomm-tty 2>/dev/null
    /sbin/modprobe irtty-sir 2>/dev/null
    /sbin/modprobe irnet 2>/dev/null
    /sbin/modprobe fuse 2>/dev/null
        daemon /usr/sbin/irattach ${DEVICE} ${ARGS}
    touch /var/lock/subsys/irda
        echo
    echo 115200 >/proc/sys/net/irda/max_baud_rate
    ln -s /dev/ircomm0 /dev/ttyS70
    ln -s /dev/rfcomm0 /dev/ttyS71
}

stop() {
        # Stop service.
        gprintf "Shutting down %s: " "$prog"
    killproc irattach
    rm -f /var/lock/subsys/irda
    rm -f /dev/ttyS70
    rm -f /var/lock/LCK..ttyS70
    rm -f /dev/ttyS71
    rm -f /var/lock/LCK..ttyS71
        echo
}

# Check that irda is up.
[ ${IRDA} = "no" ] && exit 0

[ -f /usr/sbin/irattach ] || exit 0

ARGS=
if [ -n "$DONGLE" ]; then
    ARGS="$ARGS -d $DONGLE"
fi
if [ "$DISCOVERY" = "yes" ];then
    ARGS="$ARGS -s"
fi

# See how we were called.
case "$1" in
  start)
    start
        ;;
  stop)
    stop
        ;;
  status)
    status irattach
    ;;
  restart|reload)
    stop
    start
    ;;
  condrestart)
    [ -e /var/lock/subsys/irda ] && (stop; start)
    ;;
  *)
        gprintf "Usage: %s {start|stop|restart|reload|condrestart|status}\n" "$0"
        exit 1
esac

exit 0
#END OF SCRIPT

put another file called for exemple : "ircomm" and put inside this :
#!/bin/sh
# chkconfig: 2345 99 00

case "$1" in
'start')
    mknod --mode=666 /dev/ircomm c 161 0
    ln -s /dev/ttyS1 /dev/irda
    ln -s /dev/ircomm0 /dev/pilot
    touch /var/lock/subsys/ircomm
    ;;
'stop')
    rm -f /var/lock/subsys/ircomm
    ;;
*)
    echo "Usage: $0 { start | stop }"
    ;;
esac
exit 0
#END OF SCRIPT

After this select the too files yu have created go in propriety/permission tab and check executable box
So when yu are here in a console yu can check (if all module are loaded) a /etc/init.d/irda start or service irda start, yu can see if evry thing is good (green) or if there is something bad (red), then try irdadump (in root), if yu haven't got a automaticaly generated device called /dev/ircomm0 yu can try the service ircomm start.

Already bad news, then make sure yu have all irda packages related with urpmi (irda-utils .....), have a look in /etc/sysconfig/irda yu should have inside :
IRDA=yes
#DEVICE=stir4200
DEVICE=irda0
#DONGLE=actisys+
DISCOVERY=yes

#END OF THIS


Thats all i can say about usb irda dongle ..................
Good luke!




Date: Sun, 31 Dec 2006 18:36:50 +0200
From: constantinjemna@gmail.com
To: irda-users@lists.sourceforge.net
Subject: Re: [irda-users] Serioux SRXA-IRDA02U2 USB-IrDA adapter on FC5

I knew that. Just noticed that on startup, Fedora printed "Starting B... services [Ok]" and I NEVER inserted a B... adapter in my pc. Also noticed that no message like "Starting IrDA services" appeard.

I tryied evrything in IrDA HowTo, all settings. Nothing worked. Does anybody know what chip is inside Serioux adapter, I don't want to break it just to see. And if this chip is compatible with any adapter supported by linux. I have no schematic/sm for any of the supported adapters nor mine.

2006/12/31, surfzoid surfzoid <surfzoid@hotmail.com>:
Why do speak about bluetooth with irda ?
Bluetooth is one technologie/protocol and irda another one !


Date: Sun, 31 Dec 2006 17:25:18 +0200
From: constantinjemna@gmail.com
To: irda-users@lists.sourceforge.net
Subject: [irda-users] Serioux SRXA-IRDA02U2 USB-IrDA adapter on FC5


Serioux SRXA-IRDA02U2 USB-IrDA adapter on FC5

tryied to install Serioux SRXA-IRDA02U2 USB-IrDA adapter on FC5

dmesg output on adapter usb-1 (onboard usb 1.2)
usb 1-1: new full speed USB device using uhci_hcd and address 4
usb 1-1: configuration #0 chosen from 1 choice
usb 1-1: config 0 descriptor??

dmesg output on adapter usb-1 (PCI USB card usb 2.0)
usb 2-1: new full speed USB device using uhci_hcd and address 2
usb 2-1: configuration #0 chosen from 1 choice
usb 2-1: config 0 descriptor??

got latest irda-utils installed

any solution is wellcomed! thanks!

PS: Since I inserted this adapter in an USB port in my computer, on boot I got the message "Starting Bluetooth services [Ok]"  (previous it was "... [Fail]")


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