PowerTOP version 1.11 (C) 2007 Intel Corporation < Detailed C-state information is not P-states (frequencies) Wakeups-from-idle per second : 21.7 interval: 5.0s no ACPI power usage estimate available Top causes for wakeups: 19.2% ( 17.0) <interrupt> : uhci_hcd:usb4, HDA Intel, i915@pci:0000:00:0 18.5% ( 16.4) <kernel core> : hrtimer_start_range_ns (tick_sched_timer) 18.1% ( 16.0) USB device 4-1 : Mass Storage Device (Generic) 9.5% ( 8.4) xchat : hrtimer_start_range_ns (hrtimer_wakeup) 8.6% ( 7.6) <kernel core> : hrtimer_start (tick_sched_timer) 5.6% ( 5.0) kblockd/1 : blk_plug_device (blk_unplug_timeout)Suggestion: Disable 'hal' from polling your cdrom with: hal-disable-polling --device /dev/cdrom 'hal' is the component that auto-opens a Q - Quit R - Refresh K - kill hald-addon-storage