Ubuntu – Brightness adjust Ubuntu vs Xubuntu

14.04brightness

I have little problem: LiveCD with ubuntu 14.04 can adjust brigthness on laptop and with xubuntu 14.04(installed from mini.iso)

What package i need to install for brightness adjustment.

OS (x)Ubuntu 14.04
Laptop: Toshiba TecraA11-182

Best Answer

I understood why brightness adjust haven't worked.

sudo apt-get install xubuntu-desktop

...doesn't install package xfce4-power-manager. So installing this package helped me to solve this problem:

sudo apt-get install xfce4-power-manager xfce4-power-manager-data xfce4-power-manager-plugins

Next reboot your laptop and enjoy it.

Edit

This solution no longer works on 13.10 and 14.04.

A solution that does is creating an xorg configuration file:

In a terminal type sudo touch /usr/share/X11/xorg.conf.d/20-intel.conf to create the file.
Followed by sudo gedit /usr/share/X11/xorg.conf.d/20-intel.conf to edit its content.
Then add the following content and save:

Section "Device"
        Identifier  "card0"
        Driver      "intel"
        Option      "Backlight"  "intel_backlight"
        BusID       "PCI:0:2:0"

EndSection

Log out and in again.

Source: Fix Brightness Control Not Working for Ubuntu 13.10 & 14.04

Ubuntu – How to Adjust Brightness in Lubuntu 15.04

This might not fix the problem, but it does provide a workaround.

There is a program called xbacklight that you can install via apt-get, and it allows you to change brightness with a simple interface through the command line.

$ sudo apt-get install xbacklight

The program lets you set the brightness on a scale from 0 to 100. For example, to maximize your brightness, you could do:

$ xbacklight -set 100

Additionally, if your problem is that your function keys aren't changing the brightness, there might be a problem with your keyboard drivers.

Best Answer

Related Solutions

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Edit

Ubuntu – How to Adjust Brightness in Lubuntu 15.04

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