Phoronix takes another look at Linux power consumption, you can check it out over here.
"There's been many individuals asking how the work is going in
tracking down the major Linux kernel power regression I brought to light
late last month (actually, there's at least two power regressions in the
kernel). Not much progress has been made since then as I've been out of
the office (and country) so I've been preoccupied with other matters,
but I do happen to have another power test today to satisfy other reader