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My laptop has a built in camera. Ubuntu detects this as a pluged in USB device and turns on the power. One, I don't want the camera on all the time, feel like some one is watching me. Two, it starts to heat up the screen. It's a small camera, but does produce a lot of heat after about 10 minutes of running.

I've tried following steps I found on the internet, but no luck.

The command

for device in $(ls /sys/bus/usb/devices/*/product); do echo $device;cat $device;done

Returns

/sys/bus/usb/devices/1-8/product

USB2.0 Camera

/sys/bus/usb/devices/2-1/product

BCM92045NMD

/sys/bus/usb/devices/3-2/product

Trackball

/sys/bus/usb/devices/usb1/product

EHCI Host Controller

/sys/bus/usb/devices/usb2/product

UHCI Host Controller

/sys/bus/usb/devices/usb3/product

UHCI Host Controller

/sys/bus/usb/devices/usb4/product

UHCI Host Controller

/sys/bus/usb/devices/usb5/product

UHCI Host Controller

The command

echo suspend | sudo tee /sys/bus/usb/devices/1-8/power/level

Returns

suspend

tee: /sys/bus/usb/devices/1-8/power/level: Invalid argument

1

Try this command,

sudo sh -c "echo suspend >> /sys/bus/usb/devices/1-8/power/level"

It appends the string suspend to the /sys/bus/usb/devices/1-8/power/level file.

If the file doesn't exists anymore then run the below command.It will create a file and then appends the string suspend to that file.

sudo sh -c "echo suspend > /sys/bus/usb/devices/1-8/power/level"
  • No change. System seems to not like 'suspend'. – user268673 Apr 17 '14 at 0:39
  • I corrected only the command you tried. – Avinash Raj Apr 17 '14 at 0:48
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suspend is deprecated. Use echo 'x-y' | sudo tee /sys/bus/usb/drivers/usb/unbind instead. x,y are numbers you find from

`for device in $(ls /sys/bus/usb/devices/*/product); do echo $device;cat $device;done`

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