Confirmed. Even after turning off all location services, this continues to have the highest number of wakeups of any user service:
$ sudo eventstat Event/s PID Task Init Function Callback 26.00 0 [swapper/0] hrtimer_start_range_ns tick_sched_timer 20.00 0 [swapper/0] hrtimer_start tscpu_update_tempinfo 20.00 22750 [kworker/0:0] OSTimerWorkQueueCallBack OSTimerCallbackWrapper 10.00 2556 ubuntu-location hrtimer_start_range_ns hrtimer_wakeup <------------------------------------------------ 8.00 0 [swapper/0] hrtimer_start tick_sched_timer 5.00 25671 unity8 hrtimer_start_range_ns hrtimer_wakeup 3.00 57 [hps_main] _hps_task_main process_timeout 2.00 1370 gmain hrtimer_start_range_ns hrtimer_wakeup 2.00 25706 ubuntu-push-cli hrtimer_start_range_ns hrtimer_wakeup 1.00 1 [swapper/0] start_bandwidth_timer sched_rt_period_timer 1.00 0 [swapper/0] mlog_timer_handler mlog_timer_handler 1.00 1879 [tx_thread] __pm_wakeup_event pm_wakeup_timer_fn 1.00 22750 [kworker/0:0] osal_timer_modify _stp_psm_stp_is_idle 1.00 15947 sshd sk_reset_timer tcp_write_timer 1.00 25751 ubuntu-push-cli hrtimer_start_range_ns hrtimer_wakeup 1.00 0 [swapper/0] add_timer wmt_cal_stats 1.00 847 6620_launcher hrtimer_start_range_ns hrtimer_wakeup 1.00 22750 [kworker/0:0] schedule_timeout_uninterruptible process_timeout 1.00 1 [swapper/0] hrtimer_start charger_hv_detect_sw_workaround 106 Total events, 106.00 events/sec (kernel: 84.00, userspace: 22.00) The PID is deceiving. It's actually a thread of a different PID which is /usr/bin/ubuntu-location-serviced $ system-image-cli -i current build number: 94 device name: arale channel: ubuntu-touch/rc-proposed/ubuntu last update: 2015-08-28 07:44:31 version version: 94 version ubuntu: 20150828 version device: 20150818-0b38025 version custom: 20150828 ** Also affects: ubuntu-power-consumption Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to location-service in Ubuntu. https://bugs.launchpad.net/bugs/1350871 Title: location service is waking up at 10Hz causing possible unwanted wakeups To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-power-consumption/+bug/1350871/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs