I suspect this is likely due to changes in powertop. The same issue was reported by another user as testing feedback for the powertop 2.0 beta release earlier this year:
http://article.gmane.org/gmane.linux.power-management.powertop/1959 I subsequently tested the Natty powertop-1.13-1.1ubuntu1 while running an Oneiric 3.0.0-11.17 kernel and confirm wakeups are being calculated: PowerTOP version 1.13 (C) 2007 Intel Corporation Cn Avg residency P-states (frequencies) C0 (cpu running) ( 0.7%) Turbo Mode 5.5% polling 0.9ms ( 0.0%) 2.80 Ghz 0.0% C1 mwait 0.5ms ( 0.3%) 2.67 Ghz 0.0% C2 mwait 0.8ms ( 4.0%) 1.87 Ghz 0.9% C3 mwait 6.4ms (95.0%) 1197 Mhz 93.6% Wakeups-from-idle per second : 203.8 interval: 15.0s -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/834725 Title: Powertop fails to report number of wakeups/events To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/834725/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
