I also had this problem on a Thinkpad X230 with Kernel 3.8 from Experimental.
But with the newest Powertop version 2.3 this bug is fixed and --calibration works.
I've compiled Powertop 2.3 with the libraries available in Debian. Best regards, Jakob Kasbauer -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org