Here are 3 questions about your posts, Dimitrios:

* Could you explain why you think these functions are of interest?

* Do these functions compute the signal quality values which can be
displayed, e.g., with nm-tools?

* Do the computed values affect the actual ability to receive or
transmit, or are they just being displayed and used for deciding whether
to attempt to connect to a network?

The significance of the last question is, of course, that the connection
itself is bad, not (just) the signal quality numbers.  If you compute
the numbers using a different formula, you'd possibly get something
different, while the actual connection quality doesn't change, of
course.  Again: the connection itself is unreliable, it's not a matter
of numbers.

Here's an idea: Even with 2.6.22+ipw the connection quality is slightly
worse when on battery power (though still far better than 2.6.44+iwl).
Could this be a power management issue?

-Dirk

P.S.: Currently, the way I use WiFi is to boot using the 2.6.22 kernel
in the grub menu (I get 100 error messages, but it seems to work ok).
This version still has ipw support, I modprobe ipw, and the connectivity
is good.

With 2.6.24+iwl, my tiny iPod has more reliable WiFi connection than my
linux pc.

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iwl3945 sometimes does not detect ESSIDs, whereas ipw3945 works perfectly
https://bugs.launchpad.net/bugs/177624
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