I had a drainoff last night on mako and had cpustat running, which points at upowerd A number of samples like the following :
%CPU %USR %SYS PID Task 17.76 16.87 0.90 1493 /usr/lib/upower/upowerd 0.80 0.40 0.40 4319 cpustat 0.80 0.10 0.70 1180 /system/bin/mpdecision 0.60 0.00 0.60 134 [mmcqd/0] 0.50 0.00 0.50 234 [jbd2/mmcblk0p23] 0.50 0.00 0.50 29761 [kworker/0:3] 0.30 0.00 0.30 971 /lib/systemd/systemd-udevd 0.30 0.30 0.00 2579 [kworker/0:2] 0.30 0.20 0.10 2724 unity8 0.20 0.20 0.00 848 dbus-daemon 0.10 0.00 0.10 776 rsyslogd 0.10 0.10 0.00 1593 init 0.10 0.00 0.10 1179 /system/bin/thermald 0.10 0.10 0.00 1 /sbin/init 0.10 0.00 0.10 23 [sync_supers] 0.10 0.10 0.00 750 upstart-file-bridge 0.10 0.00 0.10 1346 [MC_Thread] 0.10 0.00 0.10 21367 [kworker/u:0] 0.10 0.00 0.10 2702 /usr/lib/arm-linux-gnueabihf/indicator-power/indicator-power-service -- 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