I have the same problem on a Sony Vaio VGN-SZ3XWP. I noticed my battery life was a lot worse upon installing Intrepid (fresh install from CD), so ran powertop. Here is my output:
Cn Avg residency P-states (frequencies) C0 (cpu running) ( 4.1%) 2.00 Ghz 0.9% polling 0.0ms ( 0.0%) 1.67 Ghz 0.0% C1 halt 0.0ms ( 0.0%) 1333 Mhz 0.0% C2 0.9ms ( 0.1%) 1000 Mhz 99.1% C3 10.0ms (95.8%) Wakeups-from-idle per second : 96.3 interval: 5.0s Power usage (ACPI estimate): 21.1W (0.4 hours) Top causes for wakeups: 21.1% ( 21.6) firefox : futex_wait (hrtimer_wakeup) 19.7% ( 20.2) <interrupt> : iwl3945 18.1% ( 18.6) xchat : schedule_timeout (process_timeout) 9.6% ( 9.8) gnome-settings- : schedule_timeout (process_timeout) 8.0% ( 8.2) <kernel IPI> : Rescheduling interrupts 7.8% ( 8.0) <interrupt> : extra timer interrupt A USB device is active 100.0% of the time: /sys/bus/usb/devices/4-2 lsusb identifies this device as (I think): Bus 004 Device 002: ID 044e:300c Alps Electric Co., Ltd Bluetooth Controller (ALPS/UGPZ6) I went into System > Administration > Services and disabled Bluetooth Device Management but this hasn't solved the problem. I haven't removed btusb. -- Powertop reports a USB device is active 100% of the time. https://bugs.launchpad.net/bugs/276791 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
