Comment 17 for bug 405158

For those who asked, the modules are "backported" from compat-wireless
http://linuxwireless.org.

This is code that will go into newer versions of the Linux kernel,
which will then go into newer versions of Ubuntu.

The upstream developers disabled power management on iwlagn some time
after 2.6.30 because it was buggy. It was only recently re-enabled,
after the problems was fixed. This did not make it into 2.6.31 and is
therefore not in karmic's kernel. My guess is that the changes are too
intrusive to backport into the default kernel iwlagn.

(Note, I am not a kernel developer, but the above is how I think it
is)