I have installed a custom kernel for an unrelated issue and applied all the released package updates and the powertop report has changed.
The kernel is from bug 844957 : http://people.canonical.com/~ogasawara/lp844957/ Now the powertop reports 0 mW for the sound codec, and the overall battery drain reported is lower too (although not by 3.3W lower). OTOH meanwhile I have found bug 834725, so I am not sure how much powertop reports can be trusted. Later I will reboot back to official kernel to check if it is kernel or package updates that have caused this change. ** Attachment added: "powertop report with pkg updates and bug 844957 testing kernel" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/877560/+attachment/2560178/+files/powertop-3.0.0-13-generic-0W.html -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/877560 Title: Audio codec draining power when not in use To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/877560/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
