Cocoa Break

Ok. Geek moment here. Solved troubleshooting on Linux and want to share my solution.

Error for wireless request “Set Mode” (8B06) : SET failed on device wlan0 ;
Invalid argument.  Determining IP information for wlan0…
SIOCSIFFLAGS: No such file or directory SIOCSIFFLAGS: No such file or directory

If you received such an error on your laptop or desktop when you were activating your wireless card on CentOS 5.4 or perhaps any other Linux operating system, you probably need to install a few things.

Took me a whole day to realize that the latest drivers and dependencies for the Wireless Cards are not included in CentOS. I just switched from Fedora which already came with the Wireless stuff!!!

These are the few steps that MIGHT help you if your problem were exactly the same as mine.

My wifi hardware is: Intel Pro Wireless 3945 (iwl3945)
You can find full specification for my system by searching for Fujitsu LBS7110 notebook.

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Please take note that almost everything was done in the terminal mode.

Step 1:Install yum priorities

yum install -y yum-priorities

Step 2: Install RPMforge

Download the rpmforge-release package. Choose one of the two links below, depending on your architecture. If you are unsure of which one to use you can check your architecture with the command uname -i

• i386 http://packages.sw.be/rpmforge-release/rpmforge-release-0.5.1-1.el5.rf.i386.rpm
• x86_64 http://packages.sw.be/rpmforge-release/rpmforge-release-0.5.1-1.el5.rf.x86_64.rpm

I used CentOS’s GUI Software Installer to install the rpm packages. There will be a prompt and I clicked “Install anyway”.

You could also do it in the terminal by doing the following:

rpm --import http://dag.wieers.com/rpm/packages/RPM-GPG-KEY.dag.txt

rpm -K rpmforge-release-0.5.1-1.el5.rf.*.rpm

Security warning: The rpmforge-release package imports GPG keys into your RPM database. As long as you have verified the md5sum of the key injection package, and trust Dag, et al., then it should be as safe as your trust of them extends.

rpm -i rpmforge-release-0.5.1-1.el5.rf.*.rpm

Next simply install the drivers ( Click here if you are on other Network cards ) and enable the NetworkManager:

yum install iwl3945-firmware

chkconfig NetworkManager on

service NetworkManager start

Restart/Reboot your laptop or desktop and you will see the wireless working!

I decided to upgrade my server from CentOS 4 to CentOs 5 last night. So I did a backup of everything under LxAdmin and went ahead with a fresh install of CentOS 5.

If you are wondering why I didn’t just upgrade via the installer, it is because I’ve read so many problems on so many forums that others have faced during their attempt. Anyway, since LxAdmin has the ability to restore all the sites and clients under admin, why don’t I just do a clean installation?

Well at least that’s what I thought…
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