Public bug reported: The indicator implements the spec:
https://wiki.ubuntu.com/Power#Handling_multiple_batteries which states: "Their percentages should be averaged." Apparently this was taken to mean the simple arithmetic mean, and not the weighted average (by the capacity of each battery). http://bazaar.launchpad.net/~indicator-applet-developers/indicator- power/trunk.15.04/view/head:/src/service.c#L1316 shows: const double percent = sum_percent / n_batteries; This means that if one battery is twice as large as another, then after that battery is discharged, 50% would be reported. I'd expect 33%. The spec needs to be updated to be less ambiguous about the intended meaning of the word "average" and the code needs to be fixed. ** Affects: indicator-power (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of DX Packages, which is subscribed to indicator-power in Ubuntu. https://bugs.launchpad.net/bugs/1430542 Title: Indicator doesn't use weighted average with different-sized batteries Status in indicator-power package in Ubuntu: New Bug description: The indicator implements the spec: https://wiki.ubuntu.com/Power#Handling_multiple_batteries which states: "Their percentages should be averaged." Apparently this was taken to mean the simple arithmetic mean, and not the weighted average (by the capacity of each battery). http://bazaar.launchpad.net/~indicator-applet-developers/indicator- power/trunk.15.04/view/head:/src/service.c#L1316 shows: const double percent = sum_percent / n_batteries; This means that if one battery is twice as large as another, then after that battery is discharged, 50% would be reported. I'd expect 33%. The spec needs to be updated to be less ambiguous about the intended meaning of the word "average" and the code needs to be fixed. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/indicator-power/+bug/1430542/+subscriptions -- Mailing list: https://launchpad.net/~dx-packages Post to : dx-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~dx-packages More help : https://help.launchpad.net/ListHelp
