linux怎么关闭摄像头,Ubuntu下关闭笔记本自带摄像头

I'm on 12.04LTS. I have an external USB HD cam that I run as default (preferably). To do this, after every reboot I have to run

sudo su -c 'echo "0" > /sys/bus/usb/devices/1-1.4/bConfigurationValue'

(1-1.4 is my laptop cam) This disables my laptop cam.

Then in GUVCview I get:

Which is easily fixed by simply unplugging, and plugging the external cam's usb into port. Then my external cam works great,and is my default selection, and the only one listed in devices under GUVCview, and is marked as default in Multimedia selector.

Everytime I reboot Ubuntu, I have to go through this little process. Not a terrible problem, but is there a way to make my 1-1.4 value stay at "0" ?

EDIT:

EDIT 2:

Open Terminal

cd /etc

sudo nano rc.local

Edit File by placing command Before " Exit 0"

Press CTRL - X

Y to save

!/bin/sh -e

#

# rc.local

#

# This script is executed at the end of each multiuser runlevel.

# Make sure that the script will "exit 0" on success or any other

# value on error.

#

# In order to enable or disable this script just change the execution

# bits.

#

# By default this script does nothing.

echo "0" > /sys/bus/usb/devices/1-1.4/bConfigurationValue

exit 0

Try adding theecho "0" > /sys/bus/usb/...command you mentioned in your question to therc.localfile.

Do this by running sudo nano /etc/rc.local, and then adding the command echo "0" > /sys/bus/usb/... before the exit 0 line. You can then save it with Ctrl+O.

On using rc.local, see here. It basically runs the command on boot, so might disable the camera, on boot.

To get it to work, make it executable with chmod +x rc.local.

If you need to stop rc.local running on boot, use chmod -x rc.local. If you want to re-enable the camera without rebooting, you might be able to use echo "1" > /sys/bus/usb/... - note the 1value..

原文：http://askubuntu.com/questions/403613/disabled-my-built-in-laptop-camera-but-it-re-enables-after-reboot