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Old 02-08-2005, 08:43 AM   #1
Registered: Sep 2004
Location: Vestfold, Norway
Distribution: Slackware
Posts: 139

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Linux IrDA

OK, this question should probably be posted in the laptop section, but there are few posts there, so I take a chance and post my problem here.
I have resently converted my laptop to Linux. It's a Fujitsu Siemes Amilo M-6100, and I am running Slackware 10.0 on it. (Standard 2.4.26 kernel)
In fact this is the computer I'm posting this question from.
Almost everything worked great from the start, but a few fixes were nescessary. I had to blacklist snd-intel8x0 and snd-intel8x0m in /etc/hotplug/blacklist, to get sound working on the computer. This was because the modem, which also uses the same AC'97 intel82440MX chipset, interfered with the sound. With the blacklist in place, sound works great.
I don't really need the modem, so I'll just let that be as it is.

One thing I do need however, is IrDA. I use the laptop and go online via my cellphone and GPRS.
In windows, here's how it works:
I have my cellphone connected via the IR port, and it's registered as a modem.
I create a normal dialup-connection, and dial: *99#, and voilá, I have an internet connection.

I've searched a bit around on the net, and downloaded an IrDA tutorial, along with software from .
I've done the:
tar xvzf irda-utils-0.9.16.tar.gz
make clean
make all
su'ed to root and:
make install

This sort of works and gives me the irattach and other commands, but the /etc/irda (and contents) doesn't appear. I'm at a loss.

Hope anyone here can give me a pointer to a solution on this topic.

In essence, here's what I need:
I need to be able to use my ir-port as modem.
Once I have that, I'll probably get the rest working.

Old 02-08-2005, 12:34 PM   #2
Senior Member
Registered: Jun 2002
Location: Eastern PA, USA
Distribution: K/Ubuntu 18.04-14.04, Scientific Linux 6.3-6.4, Android-x86, Pretty much all distros at one point...
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IR port support in Linux is a little threadbare at this point... not user friendly at all,...

Here are some places to get started:
this is realy for SuSE but discusses using the ir port as a serial port, which is how you will dial-up as a modem (assuming your phone understands standard protocols).

here's more...

and last but not least (but you've seen that already):

Last edited by JaseP; 02-08-2005 at 12:37 PM.
Old 02-09-2005, 02:36 AM   #3
Registered: Sep 2004
Location: Vestfold, Norway
Distribution: Slackware
Posts: 139

Original Poster
Rep: Reputation: 15
Thanks for the links.
I've gotten a bit further, but still not working.
I'll have a go a bit later.

Old 02-09-2005, 06:07 AM   #4
Registered: Sep 2004
Location: Vestfold, Norway
Distribution: Slackware
Posts: 139

Original Poster
Rep: Reputation: 15
OK, I have a big question.
I've checked my bios, and there I saw that my IR port had irq3, which according to linux: cat /proc/interrupts, is used by my Orinoco Wireless card.
I entered bios, and disabled the onboard serialport (irq4).
I then assigned the IR port irq4 (0x3F8), saved and restarted. Back in linux, I did another test, and there were no errors, but irq4 was not in the list.
When I type: dmesg | grep tty
ttyS00 at 0x3f8 (irq = 4) is a 16550A

In bios I also noticed..
The port only has IRDA and FIR, I found now SIR, but then I'm not sure if SIR is the same as IRDA.

Anyone got any idea on how to get further from here?



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