Questions tagged [backlight]
A backlight is a form of illumination used in liquid crystal displays (LCDs).
463
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How to change LCD brightness from command line (or via script)?
To work around bug #1005495 (changing LCD brightness via hotkeys impossible), I'd like to have one command line query for increasing and one for reducing the brightness of my LCD. I could then map a ...
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xbacklight: No outputs have backlight property - No /sys/class/backlight folder
I installed xbacklight, hoping that it would be able to control my brightness. When trying to change brightness, I was told "No outputs have backlight property". After looking around, I found that ...
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10
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Decrease Backlight Below Minimum
I have this laptop that doesn't handle the backlight very well.
In /etc/default/grub, I have added a acpi_backlight=vendor function to get it to work at all. Which is cool, and the backlight now ...
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How do I set default display brightness? [duplicate]
Is it possible to set the default display brightness so you don't have to re-adjust it everytime you reboot? My laptop display is killing my eyes at the login screen already because it starts at 100% ...
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20
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Cannot change backlight brightness Ubuntu 14.04
This morning I found that I cannot change the brightness of my Dell XPs 13 laptop's display anymore. I tried the following to change the brightness
Use keyboard brightness keys
Run the commands shown ...
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17
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How to increase brightness in smaller steps?
Is there a way to adjust lighting step ? I have Lenovo L520, and Fn + Light Up or Down adjusts by 20%, how can I adjust the step to 10% ? it will help me fine tune lighting at my dark room.
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Enable the keyboard backlights on supported Lenovo (e.g. Carbon X1) with command
Some Lenovo laptops have keyboard backlights, and they can be turned on using Fn + Space. There are three states: off, normal and bright.
When I start Ubuntu, these laptops always default back to a ...
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3
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Increase screen idle dim timeout
On Ubuntu 11.10, when on battery, the screen dims after 10 seconds of inactivity. This is annoying because it is too short. Is there anyway to increase this timeout?
I know I can disable it, but ...
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5
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I cannot change the screen brightness
here's my problem:
Ever since I installed Ubuntu 12.10 on my computer I haven't been able to change the screen brightness, it was always set to the maximum. I did take a look at this post:
Decrease ...
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17
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6
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How to make keyboard backlight Fn buttons work in Samsung Series 9?
I've just installed Ubuntu 12.10 on my Samsung 900X4C. However, I can't get the keyboard backlights to work.
I added the keymaps as per community docs - Samsung Series 9 (section Function Keys). But ...
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10
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nvidia backlight brightness problem
Problem
Unity shows control while I press the Fn+Increase/Descrese brightness, but nothing happens. In console brightness doesn't work too while X server is running.
Checked solutions
I have tried ...
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2
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Wayland equivalent to "xset led"
I have been using Ubuntu since 16.04, with the CM Storm keyboard. When using this keyboard on Windows, pressing the Scroll Lock key enables/disables the backlight.
Previously on Ubuntu, the commands ...
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Lenovo Legion 5 15IMH05H brightness control problem
I have a Lenovo Legion 5 15IMH05H with a NVIDIA GeForce RTX 2060 6GB GDDR6/Intel Corporation UHD Graphics (rev 05) and an Intel Processor.
After dual booting windows and Ubuntu 20.04, I encountered a ...
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Display brightness cannot be adjusted 18.04
I have recently installed Ubuntu mate 18.04 on my XPS 15 9560. I cannot adjust the display brightness through any means. I have tried the following:
Set the acpi_backlight=vendor in boot parameters
...
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14
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8
answers
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Can't change brightness on version 22.04
I'm new to Linux, so I use Linux on dualboot. At the first time of installing Ubuntu, the brightness slider was working fine but when I made some updates + installed an Nvidia driver the slider is not ...
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Reverse-Engineer Driver for Multi-colored Backlit Keyboard on Clevo Laptops
Here's my situation:
I recently purchased a Sager NP9170 (same as the Clevo P170EM) and it has a multi-colored, backlit keyboard. Under Windows 7, you can launch an app that allows you to change the ...
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Trigger Screensaver/Off monitor
IS it possible to somehow trigger screensaver or make the monitor sleep/off? I want to disable screensaver/monitor sleep as it gets annoying at times, however I still want a way to save power via such ...
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How do I add sudo commands to a keyboard shortcut?
I am running Ubuntu 16.04 on a Sony Vaio laptop, which features a keyboard backlight. I can enter this command into the terminal, putting a "0" in place of *value* to turn the backlight off, and a "2" ...
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4
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The brightness of laptop screen cannot be adjusted with either the buttons or the slider. Edit
I have Ubuntu 17.10 installed on a MSI GT72VR laptop with a single nVidia GT1060 graphics card, grub2 as a bootand Unity as a desktop. I can't change the brightness in any way. Bright always is 100%. ...
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Automatically adjust display brightness based on sunrise and sunset
There are similar questions and answers in Ask Ubuntu that point to these solutions:
f.lux® software to make your life better
Redshift adjusts the color temperature of your screen according to your ...
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1
answer
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xbacklight - No outputs have backlight property
I am running Lubuntu 16.04
Attempting to run xbacklight -get gives me No outputs have backlight property
There is only one directory in /sys/class/backlight, which is intel_backlight.
I have ...
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votes
9
answers
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Lubuntu brightness/backlight issue
I freshly installed Lubuntu 18.10 with LXQT environment and here's my issue :
I want to dim the backlight of my laptop with the keyboard shortcut (XF86) but when i press it, it changes the brightness(...
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No brightness control 18.04 LTS: /sys/class/backlight is empty
I know this issue had been addressed in the past (like this, this, this, this, this, this and more), but none were actually given a definite answer.
To begin, I'm using a NVDIA GTX1080 Max-Q graphic ...
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10
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2
answers
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How do I deactivate dynamic contrast on a Dell XPS?
I am experiencing annoying automatic backlight brightness changes under ubuntu 12.04 LTS on my Dell XPS ultrabook.
It seems to be connected to the amount of white pixels on the screen (switching ...
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5
answers
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Macbook Pro boots with full screen brightness and keyboard backlight
I have dual-booted my Macbook Pro with Ubuntu 12.04 . Whenever i log-in to Ubuntu, it does so with full screen brightness and keyboard backlight at full . How do i get rid of this? How can i tweak the ...
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Fn + F5 / F6 brightness keys not working on Asus R556L
I've already tried many solutions I'd found on the web and none of them has worked. I'm using Ubuntu 16.04 LTS, fresh installation.
This notebook has Intel HD Graphics 5500 and Nvidia GeForce 920M. I ...
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7
answers
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Legion 5 pro brightness control doesn't work on ubuntu 20.04 with nvidia driver 460
My laptop seems to be on max brightness and the brightness control slider/Fn keys have no effect on the screen brightness except showing a pop-up notification of the slider. This problem isn't really ...
- 263
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3
answers
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Can't adjust keyboard backlight on Asus ROG Strix G Laptop
I've looked at various guides and tools for adjusting the keyboard backlight brightness of my Asus G531GT laptop on Linux. All (e.g. https://github.com/iamweird/asus-kbd-backlight) seem to work by ...
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How to stop gnome-power-manager from changing the global backlight setting?
After installing Ubuntu on my ThinkPad T510, the GDM screen and GNOME session would always start at 100% brightness.
I quickly found out, that this can be controlled via gnome-power-preferences, but ...
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8
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2
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Changing Screen Brightness Through Keyboard Functions on My Notebook
I've installed Ubuntu 16.04 on my Asus X555LJ.
But I don't know how to install drivers or how to enable function keys to controls screen backlight brightness.
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Set initial startup background brightness depending on daytime
I run Ubuntu 16.04 on an Acer Aspire E5-773G notebook. Unfortunately, I can not use my brightness function keys on the login screen, so the first moment when I am able to change my screen backlight ...
- 108k
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3
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Macbook Pro backlight control not working on Ubuntu 16.04
I'm trying to fix the backlight issue on my Macbook Pro Retina after installing Ubuntu 16.04.
The problem is the backlight dimmer buttons F1 F2 or Fn+F1 and Fn+F2 are not working at all after ...
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2
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Dell XPS 13 9343 - keyboard backlight on at boot Ubuntu 15.10
I upgrade from Ubuntu 15.04 to Ubuntu 15.10 and now on the first boot the keyboard backlight is on. I can manually turn it off, but the setting is not remembered and the next boot results in the ...
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How to disable Macbook keyboard backlight
How do I disable the keyboard backlight, by turning it completely off, on a Macbook in 12.04?
Whenever I reboot, Ubuntu sets the backlight to 100% brightness, and frustratingly the new function keys ...
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7
votes
3
answers
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Disable brightness and keyboard back-light at start-up?
I'm new with Linux and I have an issue that I have being researching and have not been able to find a solution so far. I was wondering if any help can be given. I have an Asus Q500A with Win-8 and ...
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votes
1
answer
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Manage Keyboard backlight on dual boot system
I have a Samsung Notebook 7 spin 15.6" FHD Touch NP740U5L-Y02US - i7-6500U - 12GB - 1TB set up dual boot Windows 10 and Ubuntu 16.04.
Function Key + F9 is supposed to control keyboard backlight, but ...
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1
answer
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Failed to start Load/Save Screen Backlight Brightness of backlight:acpi_video0
As what title shows, I see this message at the screen of booting system.
[ OK ] Created slice system-systemd\x2dbacklight.slice.
Starting Load/Save Screen Backlight Brightness of backlight:...
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7
votes
1
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How can light sensor be enabled for control brightness and keyboard back-light automatically?
I have A Sony VAIO laptop F-series () Nvidia and it has light sensor. When I was using Windows, this light sensor controlled the brightness and the keyboard backlight automatically due to the ...
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votes
5
answers
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No keyboard backlighting
I have bought an MS-industral Fusion keyboard.The keyboard supports backlighting and I have tested it on my friends Windows 7 and it worked.I am using Ubuntu 14.10 and backlighting does not work.All ...
- 1,043
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Ubuntu 15.04 Suspend doesn't run `pm-suspend`
After upgrading to Ubuntu GNOME 15.04 (from 14.10), I noticed my pm-utils hooks in /etc/pm/sleep.d aren't running anymore on suspend/resume.
I have a custom script which saves the brightness before ...
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votes
3
answers
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Time to dim the screen in Ubuntu 14.04
Ok so it seems that the key in org.gnome.settings-daemon.plugins.power idle-dim-time is gone in the new Ubuntu version. Since the old method Increase screen idle dim timeout doesn't work anymore are ...
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How to recognize backlit of an Asus UX31E keyboard?
I replaced the keyboard in my Asus UX31E with one from later UX31A. The only technical difference between the two is that the latter has keyboard backlight and uses Fn + F3 / F4 for this.
However, I ...
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Can you help me write a script to set a new default brightness for the screen/keyboard after login?
On my Macbook Pro Ubuntu alsways boots with...
keyboard brightness at maximum illumination
screen brightness at maximum illumination
...both which I need almost never during normal usage.
Question
...
user24668
6
votes
3
answers
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views
Why does Ubuntu reset brightness settings at the loading screen?
Since I first installed Ubuntu 11.10, I noticed that volume and screen brightness get reset every time Ubuntu starts.
Why is this so? And what ways are there to keep brightness and volume levels ...
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2
answers
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How to increase the amount of steps of brightness adjustment-key [duplicate]
The screen of my laptop (Dell Vostro 3460) supports 16 levels of brightness: Not only according to the manufacturer, but also as is clear from two OSs: Both Windows 7 and Ubuntu (dual-booted) support ...
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3
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How do I change the backlight brightness on an iMac 12,2? [closed]
Problem: I can't adjust the brightness of my iMac and it's killing me. (My eyes! The goggles do nothing!).
Has anyone gotten this to work?
-Booting with rEFIt 0.14
-Product Name: iMac12,2
-Kernel:...
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I can't lower the backlight/brightness
Why I can't control the brightness/backlight level?
At the first:
Notebook Positivo BGH - C500 Series.
Processor: AMD C60 series (dual core 800 mhz-1ghz)
GPU: Radeon HD 6290 (worked with fglrx/...
6
votes
1
answer
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"monitor brightness down" key resets brightness before lowering it
My monitor brightness down key resets my brightness before lowering it, effectively leaving me at near max brightness. I do not experience any problems with the brightness up key.
I'm using a Dell ...
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5
votes
3
answers
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Keyboard backlight sensor doesn't work on a Sony Vaio VPCS116FG
I have a VAIO laptop (VPCS116FG, S series). Its keyboard has sensors that can detect how bright the surrounding is, so it automatically turns on the backlight in dark places such as airplane cabins. ...
user32459
5
votes
5
answers
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Make Ubuntu remember screen brightness level without xbacklight
The problem is that Ubuntu always resets the brightness level to maximum after every reboot. I installed the xbacklight utility, but commands like xbacklight -get or xbacklight -set XX don't work. I ...
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