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I had installed Ubuntu 12.04 i my Toshiba Laptop Satellite C665-I5011

In this I am not able to change the LCD brightness. When i press Fn+F6 or Fn+F7 the brightness bar is changing but the LCD screen brightness is not changing.

Can someone help me in this to solve this?

Jorge Castro
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DJM
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4 Answers4

1

Try this:

  1. Open a terminal (Ctrl + Alt + T).
  2. Then type sudo nano /etc/default/grub. It will ask for your password. Type it in.
  3. Around the 11th line, there will be something like: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash". Change it to GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor"
  4. Save the file by Ctrl+O followed by Ctrl+X. Then run sudo update-grub in the terminal.
  5. Reboot and see if backlight adjustment works. If not, undo the changes you did above, by invoking the text editor as in steps 1 and 2.

Hope it helps.

Ishmum
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1

Launch synaptic packet manager. Type in ACPI, check acpi 1.61 and acpitool 0.5.1-3,mark for installation,click apply and then reboot or restart.

Should work.

Worked for me on Toshiba satellite L450D-11V.

Kodi
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Did it work? Have the same problem. Couldn't fix it and wrote a skript in gedit:

#!/bin/sh

SYSFILE=/sys/class/backlight/acpi_video0/brightness
MAX=`cat /sys/class/backlight/acpi_video0/max_brightness`
CUR=`cat $SYSFILE`

RET=`zenity --scale --value=$CUR --max-value=$MAX`

echo $RET | sudo tee $SYSFILE

started it in the terminal. Its not the best solution, but works.

Seth
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Jochen
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0

try this package and see if it's working after a reboot:

sudo apt-get install fnfxd fnfx-client

if you need acpi, you can find them here:

http://manpages.ubuntu.com/manpages/hardy/man4/acpi_toshiba.4.html

ecoologic
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