[Bug 55532] Re: ipw2200 not working: "Failed to send TX_POWER"

[Mark Dehus]

I have a Tecra A4 with the same issue. I was able to resolve it once before by adding some options to my grub config, but they recently got whacked on a kernel update. After an hour or two of digging (again) I found the thread that fixed my problem
http://ubuntuforums.org/showthread.php?t=234304&highlight=ipw2200+irq

Try adding lapic and irqpoll to your boot options and see if that
resolves your problem.

To do so..

$ sudo gedit /boot/grub/menu.lst
Scroll down till you see a line that says ## ## End Default Options ##
Four lines below that you should see a line that starts with the word kernel,
at the end of it add "lapic irqpoll" (without the quotes).

(DEVELOPERS.. PLEASE DONT WIPE THE ENTIRE GRUB.CONF WHEN YOU UPDATE THE
KERNEL, THIS IS VERY ANNOYING AS I LIKE TO KEEP MY BOOT OPTIONS!)

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ipw2200 not working: "Failed to send TX_POWER"
https://launchpad.net/bugs/55532