[Powertop] powertop 2.6 still reports incorrect device battery usage

On kernel 3.15.5, thinkpad T540p IDPS display, intel graphics I'm still getting bogus numbers for devices. Snapshot #1: - My wifi card is certainly not using 12.7W - Display backlight + wifi = 17.9W, which means the entire laptop would be running on 2W? That's of course wrong - The 1117 wakeups are not accounted for and apps blamed correctly for that use I blew away my calibration, upgraded from powertop 2.4 to 2.6.1, and now I see: The battery reports a discharge rate of 17.6 W The estimated remaining time is 5 hours, 10 minutes Summary: 893.0 wakeups/second, 26.4 GPU ops/seconds, 0.0 VFS ops/sec and 11.3% CPU use Power est. Usage Events/s Category Description 18.7 W 216.8 pkts/s Device Network interface: wlan0 (iwlwifi) 5.16 W 33.0% Device Display backlight 61.0 mW 35.8 ms/s 86.5 Process dpkg 39.4 mW 1.6 ms/s 24.9 Process xfce4-terminal -T window1.10 --role=window1.10 --tab 35.6 mW 8.2 ms/s 133.2 kWork normal_work_helper How can powertop tell me that my wireless card is using more power than the entire laptop? Clearly the calibration didn't work right, but shouldn't the code have checks for things that are clearly wrong and tell the user what to do to fix them/recalibrate? Or better, shouldn't it retune the device usage on its own when it finds something clearly wrong like power use of the laptop being negative after removing devices, or inconsistent with the basic power usage calculated during calibration? Thanks, Marc -- "A mouse is a device used to point at the xterm you want to type in" - A.S.R. Microsoft is to operating systems .... .... what McDonalds is to gourmet cooking Home page: http://marc.merlins.org/ | PGP 1024R/763BE901