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4 Ways to Fix the Laptop Brightness Problem In Ubuntu

Four quick means to fix the everlasting Laptop brightness problem in Ubuntu.

Yous are reading: four Ways to Fix the Laptop Brightness Trouble In Ubuntu

Ubuntu plus nearly of the Linux distributions always had issues with Laptop brightness. The default hardware controllers never in the Laptop keyboard worked near of the time afterward a fresh install.

Follow below definite steps that worked till now for about of the Laptop based on feedback on this website at our old article.

The described methods worked for the beneath models (so far). For the complete list of Laptops/Desktops where either of these 4 methods worked, refer to the list at the lesser of this article.

ASUS G75-VW
Dell Vostro 3000 Series
Samsung RV411 Serial

Prepare the Laptop Brightness Problem In Ubuntu

Method 1: Gear up Effulgence Enabling Laptop Specific Drivers

Open the file /etc/default/grub using gedit or any other text editor.
Notice the below line.

GRUB_CMDLINE_LINUX_DEFAULT="placidity splash"

Alter in a higher place line to:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor"

This would ensure to load device specific drivers before default drivers in Linux.

Save the file and close the text editor.
Open the terminal and run the beneath control.

update-chow

Reboot.

After reboot, try adjusting the effulgence using Laptop dedicated control keys.

Method ii: Fix Effulgence Using a Software

If the higher up method did not work, you can try beneath method using an app.

This app chosen 'Brightness Controller' is capable to control display using a elementary GUI. It supports multiple displays as well.

The app is available in PPA. You can run below command to install it Ubuntu sixteen.10 Yakkety Yak, Ubuntu sixteen.04 Xenial Xerus, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS.

sudo add-apt-repository ppa:apandada1/brightness-controller sudo apt update sudo apt install brightness-controller

For other download options, you lot can refer to this folio.

After install, you can find it under the application menu or search information technology in Nuance. Once opened you can see a bar that controls the display brightness which you can arrange every bit per your need.

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Method 3: Set up Brightness by configuring X11

Follow this method if none of the above fixes piece of work. This should be the concluding resort.

Open a terminal session. So browse to the X11 config file path /etc/X11/xorg.conf.d

cd /etc/X11/xorg.conf.d

If you practise not find any file in the higher up path, then check the below path for the configuration. This is mainly for those systems where you have logged in equally a local user and not a root user.

cd /usr/share/X11/xorg.conf.d

Then listing the files via ls. Yous can see something like below.

ls

For this case, you can see information technology has a file named 10-evdev.conf. For your system, information technology might exist different. And so open up the file via test editor as root.

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sudo gedit /etc/X11/xorg.conf.d/10-evdev.conf

Add below lines entirely at the end of this file and save the file.

Section "Device" Identifier "Device0" Driver "nvidia" VendorName "NVIDIA Corporation" Option "RegistryDwords" "EnableBrightnessControl=ane" EndSection

Sample file beneath:

Once yous are done, restart the organization.

You should be able to command the brightness now using the laptop hardware keys.

Method iv: Ready Brightness using xrandr

If none of the to a higher place methods give you hope, and so try the following method. This uses xrandr'southward properties, which is the official config utility for X server Resize and Rotate.

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Open a terminal and discover out the proper noun of your brandish using the beneath control. In the below screenshot, you lot tin can see two outputs because in my test organization two displays are there.

xrandr | grep " connected" | cut -f1 -d " "

Then, side by side is to change the brightness using the display proper noun. So, employ the post-obit command by changing the monitor name. In this case I accept used eDP-1 which is my organisation'southward display. The brightness value range is 0 to one, where 0 is the dimmest and one is the brightest.

xrandr --output eDP-1 --brightness 0.vii

To revert, you tin can use the above command with brightness=1.

Drop a comment if any of these methods worked for your laptop. Don't forget to mention your Laptop model for the benefit of others.

Above methods are tested and working well in below Ubuntu releases:

Ubuntu xvi.04 LTS, Ubuntu 17.10, Ubuntu 18.04 LTS, Ubuntu xix.x, Ubuntu 20.04 LTS

List of hardware (Laptops, Desktops) where either of the to a higher place method worked till now (updated June 2020):

Toshiba C-665
Toshiba Tecra A9-S9016X
Dell Vostro 3000 Series
Dell Latitude E6530
Dell XPS 15
Samsung RV411 Series
Samsung Notebook NP370R5E
Intel HD4000
Acer Aspire 5810
Lenovo G580
LG P430
HP Pavilion G Serial
Gigabyte Aero15
ASUS G75-VW
ASUS K52F