Both powertop 2.1 and now powertop 2.4 tell me my onboard laptop camera is burning battery. This is a lenovo T530 with kernel 3.9.5. However, I've unloaded the module and that doesn't help: To save battery, I do: ifconfig eth0 down for i in videobuf2_core uvcvideo videodev e1000e do rmmod $i done The battery reports a discharge rate of 14.5 W The estimated remaining time is 2 hours, 8 minutes Summary: 681.7 wakeups/second, 2.0 GPU ops/seconds, 0.0 VFS ops/sec and 19.4% CPU use Power est. Usage Events/s Category Description 6.13 W 73.3% Device Display backlight 3.08 W 100.0% Device USB device: Integrated Camera (Chicony Electronics Co., Ltd.) 71.2 mW 149.9 ms/s 240.0 Process /usr/bin/enlightenment 24.0 mW 175.6 µs/s 144.5 Timer menu_hrtimer_notify 12.5 mW 1.0 ms/s 75.5 kWork od_dbs_timer 12.1 mW 98.3 µs/s 72.9 Process [kworker/2:0] Yet, powertop is still showing this below which is still visible in lsusb after I unload uvcvideo: Bus 003 Device 004: ID 04f2:b2ea Chicony Electronics Co., Ltd I often have the same problem with my audio device too: 1.88 W 100.0% Device Audio codec alsa:hwC0D0: thinkpad (Realtek) Thankfully unloading some modules seems to fix this: for i in snd_hda_intel snd_hda_codec_realtek snd_hda_codec snd_hwdep; do rmmod $i; done Any idea how I can stop the camera from sucking power since unloading the module isn't enough? Thanks, Marc -- "A mouse is a device used to point at the xterm you want to type in" - A.S.R. Microsoft is to operating systems .... .... what McDonalds is to gourmet cooking Home page: http://marc.merlins.org/