Same problem here with Karmic, kernel 2.6.31-20-generic. Battery life decreased to 30% of that in Jaunty (1h to 20 min.).
Top causes for wakeups: 28.6% ( 44.7) <kernel core> : hrtimer_start_range_ns (tick_sched_timer) 13.6% ( 21.3) <interrupt> : extra timer interrupt 8.1% ( 12.7) <interrupt> : ehci_hcd:usb2, uhci_hcd:usb3, uhci_hcd:usb5 7.9% ( 12.3) firefox : hrtimer_start_range_ns (hrtimer_wakeup) 7.9% ( 12.3) /sys/bus/usb/devices/2-1.1.1 7.0% ( 11.0) <kernel core> : hrtimer_start (tick_sched_timer) 6.8% ( 10.7) <kernel IPI> : Rescheduling interrupts -- karmic: wakeups <kernel core> : hrtimer_start_range_ns (tick_sched_timer) https://bugs.launchpad.net/bugs/373245 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
