Arch Linux

Beregond

Member

Registered: 2013-07-17

Posts: 11

Camera consumes power, but uvcvideo is not loaded

Hi there! I'm trying to save as much power as I can while my laptop runs on battery, and today I'm facing a weird issue: powertop shows at the top:

  15.4 W     74.0%                      Device         Display backlight
  7.96 W      3.5 pkts/s                Device         Network interface: wlan0 (iwlwifi)
  4.56 W    100.0%                      Device         USB device: Laptop_Integrated_Webcam_HD (1234567890-4MS)
  1.85 W    100.0%                      Device         USB device: USB2.0-CRW (Generic)
  730 mW     16.4 ms/s     224.8        Process        /usr/lib/firefox/plugin-container /usr/lib/mozilla/plugins/libflashplayer.so -greomni /usr/lib/firefox/omni.ja -appomni /usr/li
  549 mW    286.0 ms/s       0.7        Process        pacman

The fact is, uvcvideo is blacklisted and I only load it with modprobe when I use it.

root@pc / # lsmod                                                                                                                                                       Tue 15/07/2014 15:09:14
Module                  Size  Used by
iwldvm                122035  0 
iwlwifi                84709  1 iwldvm
r8169                  56586  0 
------------------------------------------------------------
root@pc / # cat /etc/modprobe.d/no_webcam.conf                                                                                                                          Tue 15/07/2014 15:09:29
blacklist videobuf2_vmalloc
blacklist videobuf2_memops
blacklist videobuf2_core
blacklist uvcvideo

I seriously don't know what's going on! Also, I am experiencing fairly high temperatures during normal usage. Currently I have:

root@pc / # i8kctl temp                                                                                                                                                 Tue 15/07/2014 15:11:44
63
------------------------------------------------------------
root@pc / # i8kctl fan                                                                                                                                                  Tue 15/07/2014 15:11:48
-1 3

Are these temps normal on a i7 machine? Yesterday during some tests with a multithreaded algorithm, temp got as high as 103 degrees! Is i8kctl reliable?

Thank you so much in advance!