Keyboard backlight on VPCS11E7E with Ubuntu 12.04

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Good news here too. Since some Linux kernel version, the sony_laptop module has been able to manage natively Vaio’s keyboard backlight, turning it on/off and setting its timeout delay. This is achieved using two controls in

cd /sys/devices/platform/sony-laptop/

kbd_backlight

Turns on/off the keyboard backlight. Usage:

  1. Off
  2. On

kbd_backlight_timeout

Sets the timeout delay of the keyboard backlight. Usage:

  1. 10 seconds
  2. 30 seconds
  3. 60 seconds
  4. Always on

For example lighting up the keyboard can be done with

echo 1 | sudo tee /sys/devices/platform/sony-laptop/kbd_backlight

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