I know exactly what the definition of qualia is, Mike. You can stop repeating it. Instead, please answer my specific questions about it.
"What does it do, how does it work, where is it, how does one detect it"
In reverse order.
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How does one detect it?
The conscious experience is directly manifest. If you don't detect it, maybe you don't possess it.
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Where is it?
Physical, material things have location.
Locations are just relative measurements.
The mind doesn't have a location relative to physical things.
Physical things have relative locations in the mind.
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How does it work
Premise 1: existence consists fundamentally of "being"
Premise 2: being operates in such a way that, within itself, it makes it model of itself
Premise 3: a model of being, made of being, must itself be being
Consciousness then, is not something a material body possesses. It's what happens when reality, when being itself tries to understand itself.
Hmmm. Maybe that's why you can't detect it? ;-)
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What does it do
To those with a conscious experience, it is immediately obvious.