With wifi associated to a fairly "busy" AP that produces regular beacon intervals with CTS protection mode enabled and also phone data enabled I'm seeing ~24+ hours on deep sleep idle.
With wifi enabled, I'm seeing ~7.5 wifi related wakeups per minute. I then disabled wifi and these wakeups disappear. So the bottom line is that wifi in deep sleep is the root cause of extraneous wakeups. Now depending on how busy the AP is and the kinds of packets, it may cause more or less wakeups, hence different drain characteristics. I'll recharge the phone and see how the wifi disabled case changes the battery drain rate. Attached is two-page spreadsheet of my drain results and also stats on wakeups from deep sleep caused by wifi related wakeup events. ** Attachment added: "wifi related battery drain stats" https://bugs.launchpad.net/ubuntu/+source/powerd/+bug/1372413/+attachment/4299973/+files/mako-rtm-battery-drain-12hrs.ods -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to powerd in Ubuntu. https://bugs.launchpad.net/bugs/1372413 Title: Extensive battery drain on RTM Status in the base for Ubuntu mobile products: In Progress Status in powerd package in Ubuntu: Confirmed Bug description: Mako, RTM 1 Since upgrading to RTM the battery life is really poor. What used to be a battery drain of 5-10% per hour (which is still high) is now 10-15% per hour. Sometimes the phone runs really hot, so there seem to be something going on in the background that is consuming power. I mostly have bluetooth, GPS (which isn't always working), wifi and cellular on, but that's no difference from when I was running 'devel- proposed' with MultiROM with much less battery consumption. As an example, I started with a full charge at 7am. After some web surfing (<15 mins) and watching a couple of youtube videos (on wifi) battery was down to 66% at 9:15. That's 34% in just over two hours! I recharged again before lunch and had the phone idle until coming back 1 hour and 45 mins later to find only 75% of battery left, this time without the phone running particularly hot. To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1372413/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
