Questions tagged [backlight]
A backlight is a form of illumination used in liquid crystal displays (LCDs).
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jertech 348 keyboard backlight in ubuntu
I have a tech3 348 keyboard for which the backlight does not work in my Linux Ubuntu operating system
I need to learn or start or understand the LEDs on my keyboard and 348 in which it does not turn ...
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How to fix error "Failed to start: Load/Save Screen Backlight Brightness of backlight:acpi_video0"
I'm a beginner Ubuntu user, using version 20.04. Ubuntu randomly black-screened on me today when I wasn't doing much, I just had Firefox and Discord open. I held the power button on my laptop down to ...
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Backlight turns off or screen turns black when the brightness is 100% and can't turn off auto adjust brightness by sensor
I have two problems.
Problem 1
Can't turn off auto adjust brightness by sensor. I can't see option in setting. I tried with dconf but it doesn't work.
Problem 2
When I put the brightness at 100%, the ...
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Hp elitebook 840 G3 Keyboard backlight not detected
I'm having issues with an HP elitebook 840 G3. I cannot access information regarding the keyboard back light on Ubuntu 18.04
My keyboard back light works normally (with pressing Fn and F3), that's not ...
CommunityBot
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Help writing leds user space driver for HP 17-by4xxx laptop keyboard backlight running Ubuntu 23.10
I need to create a new led user space driver for the keyboard backlight on my HP laptop running Ubuntu 23.10. I have found the location for the keyboard drivers.
device driver directory
/sys/devices/...
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Keyboard backlight of my laptop doesn't seem to be seen
My laptop has an RGB keyboard backlight that i cannot modify.
Currently, at boot, the keyboard goes through a few colours before stopping on blue. Afterwards, shortcuts do not change it, and if the ...
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Laptop screen only works when connected to external monitor
Once in a while I see the following problem on my HP Envy 17 notebook (2100ed): When I power up, the backlight switches on, but apart from that the screen is black. (No BIOS menu/grub etc, nothing.) ...
CommunityBot
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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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After installing fglrx on Ubuntu 14.04 there is no backlight (hd 5470). Is there any workaround?
I've installed fglrx driver on my Asus k52je laptop with mobility radeon hd 5470 using additional drivers window in ubuntu. I get black screen after reboot. When I hold power button i can barely see ...
CommunityBot
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Toshiba Satellite P755-S5269 keyboard backlight doesn't work
I'm new to Ubuntu and I have a problem with the keyboard backlight on my laptop. I was looking for solutions on the web but unfortunately I could not find anything specific.
My laptop model is ...
CommunityBot
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Back-light keyboard's lights are not working after upgrading to Ubuntu 22.04
My backlight keyboard was working fine. I used to just use xset led on and the keyboard would just turn on its lights; however, after upgrading to 22.04. xset led on does not work anymore. I would be ...
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Ubuntu 20.04 backlight problem, only boots from recovery mode
As a new Ubuntu user, I am facing a problem with my backlight.
After succesfully dual booting Windows 11 and Ubuntu 20.04.3 LTS on my HP ENVY x360 15-es0570nd (Intel core i7 processor and NVIDIA ...
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How to switch keyboard backlight in MSI KATANA GF66 in ubuntu 22.04 when function keys for backlight does not work?
I've had my laptop (MSI KATANA GF66 12UEOK) since late 2022.
I'm using ubuntu for years, but the problem here was that the keyboard backlight function key assigned on the keyboard is not working in ...
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Backlight Keyboard Not working
I have a backlight Keyboard Banda k77.
Recently I switched from Windows to Ubuntu 22 LTS version.
In windows, when I press scroll lock button. The backlight would turn on and off.
But after switching ...
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Check for missing driver for Dynamic Backlight Control (DBC)
Gnome should support an automatic screen brigthness feature, which can be set in gnome-control-center.
This adaptive brightness might not be supported on all computer. If so, the relative setting is ...
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Lenovo legion 7 16ACHg6 (2021) backlight brightness control problem
I have a Lenovo Legion 7 16ACHg6 (2021) which was only released recently.
It has AMD 5800H with NVIDIA RTX 3060 GPU.
One of the issues I found is that backlight brightness control is not working.
I.e. ...
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ASUS TUF Dash F15 keyboard backlight not working
My keyboard backlight on my asus TUF dash F15 notebook does not work, even though I looked in /sys/class/leds/asus::kbd_backlight and brightness file changes on Fn+F2 and Fn+F3.
I have tried some ...
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Can't control screen brightness - ACPI Error - Lenovo Legion Y540
I've observed the same behavior on 4 different Linux distributions (mint, manjaro, debian, ubuntu), they show ACPI errors on boot (link of a picture: https://i.stack.imgur.com/RtxgL.jpg edit: this ...
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In Ubuntu 23.10, xset led 3 and xset -led 3 do not work for wired keyboards
I have a USB cable keyboard and the LED light is not working, but on this same laptop it was working on Ubuntu version 22.04, now xset commands etc. are not working
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Ubuntu 22.04 Screen Brightness Remains Dim If Not Logging On Immediately
Ever since I upgraded to Ubuntu 22.04 I've been having a problem with the screen brightness if I don't log on immediately after booting.
Steps to reproduce:
Boot Ubuntu 22.04
After boot, don't log in ...
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Brightness control Ubuntu Nvidia GPU
I am using a Thinkbook Gen 2 Laptop with Ubuntu 22.04 LTS freshly installed.
I bumped into the same problem as many other people: the brightness of the screen doesn't change neither with the keyboard ...
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Keyboard backlight: how to have it turn off automatically after x minutes of inactivity on Macbook Air
Ik recently installed Ubuntu 22.04.3 LTS on my Macbook Air (i5-4250U, 4Gb, 121 Gb). System works like a charm, except for one thing. I want the keyboard backlight to automatically dim / turn off after ...
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Backlight of built-in display turns off when laptop lid is moved downwards from a certain angle
I want to prevent backlight of built-in display from turning off when laptop lid is moved downwards ( not even complete close, just downward movement ) from a certain angle via Ubuntu. The external ...
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Keyboard lights turn off on laptop poweroff
I have Xiaomi RedmiBook Pro 14 2021 with Ubuntu 23.10 on it recently installed as only system.
The laptop has keyboard backlight, which can be enabled/disabled by pressing Fn+F10, or with just F10. ...
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Please help, no back light anymore. MacBook pro won't boot
Okay, a newbie here with a big problem.
I installed Ubuntu 20.04 on my 2009 MacBook Pro.
I am completely new to the world of Linux and have yet to discover everything.
However, I could not dim the ...
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How to automatically turn keyboard backlight on after suspend?
I am using Ubuntu 22.04.1 on a Lenovo ThinkPad P72. When I suspend the laptop the keyboard backlight turns off, and remains off after I wake/resume.
How can I automatically turn the keyboard ...
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Screen randomly gets almost black on Ubuntu 22.04 - 3 to 4 times a day
For quite a month now, I have the issue that my notebook screen randomly gets almost black. By almost I mean the content is still visible but hard to see. It seems like the backlight of the panel is ...
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External KeyBoard BackLight is Not Working On Ubuntu
Hello Guys I bought a new keyboard for my HP laptop and the backlight is not working
I tried :
xset led
and all commands with " xset " like set -l led or bla bla
so the only way was :
...
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Acer screen brightness cannot be controlled
On Acer Nitro laptop, I cannot control the brightness of the screen.
If I boot with kernel parameter acpi_backlight=native I get:
acer_wmi: Unknown function number - 4 - 0
If I boot with kernel ...
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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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intel_backlight directory does not exist in ubuntu 22.04
Previously I'd been changing my laptop screen brightness by directly changing the value of /sys/class/backlight/intel_backlight/brightness; But recently I noticed that intel_backlight directory is ...
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After installing Ubuntu 22.04 my keyboard backlight stopped working
Recently, I installed Ubuntu on my galaxy book 3 360 and the backlight of the keyboard doesn´t work anymore. When I power my laptop all the keyboard lights up, so they are working but after sometime ...
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Cannot get brightness keys to work on Ubuntu 22.04 / Lenovo IdeaPad 5
I have IdeaPad 5 15IAL7 on Ubuntu 22.04 LTS, kernel 5.19.0-46-generic. It is Intel Core i5 with Intel Iris XE graphics.
Special Fn keys all work, except the brightness. Volume is changing with ...
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External keyboard backlight problem
I tried to turn on my external keyboard's backlight using the commands (xset led on, xset -led 3 then xset led 3) on Ubuntu 22.04, and these commands are not working.
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How can I keep my backlight from turning off on my Lenovo G50-30 laptop?
How would I keep the screen backlight from going out after a very short time? My laptop is the Lenovo G50-30 and this is causing me issues with this happening all the time. Could you please assist me ...
CommunityBot
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20.04: Adjust display brightness in smaller steps with brightness buttons
The buttons work (out of the box) and brightness is preserved (with acpi_backlight=vendor in GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub and sudo update-grub).
Brightness is controlled between 0 ...
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writing a script, making it executable then assigning it keys
I have a Samsung np700z5a and have managed to get most features working but would love to get the keyboard backlight keys working.
I have tried several methods including through the terminal. I have ...
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How does one diagnose a hardware vs software problem with a laptop keyboard backlight?
I have Ubuntu 22.04 on a Dell Inspiron-7779 laptop. My keyboard backlight began to work intermittently and then failed completely. I'm trying to work out if this is a software issue or a hardware ...
CommunityBot
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LG Gram laptop keyboard backlight refuses to work
Title pretty much. I've tried reloading the kernel module, I've tried xset led 3, I've tried using brightnessctl, nothing works. It's not a hardware issue, since in windows 10 it works just fine, and ...
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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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How can I disable MX Keys Wireless Keyboard backlight
How can I disable Logitech MX Keys Wireless Keyboard backlight on 20.04. I want to turn off LEDs completely with a GUI or command line tool.
I was able to turn off LEDs of my Logitech mouse with Piper ...
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How do I enable changing the backlight brightness on my laptop? (Kubuntu)
I recently installed Kubuntu 22.04 with KDE on my Pixelbook (2017), and the backlight of the monitor either is at maximum brightness, or off.
I have tried manually changing values in /sys/class/...
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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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brightness control with ddcci and gnome slider
I have connected an external touch to my mini pc. DDCCI module seems to work for me.
eg
echo 90 > /sys/class/backlight/ddcci5/brightness
results in a change of brightness. But unfortunately I ...
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Thinkpad L14 G4 AMD Keyboard backlight slider is not displaying proper value under Ubuntu 22.04
I have a problem with my new Thinkpad where the backlight works but the 3 states are not properly shown on the slider when pressing FN+Spacebar. They're off by one, as in the keyboard backlight will ...
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Thinkpad L14 G4 AMD Keyboard backlight slider is not displaying proper value under Ubuntu 22.04
I have a problem with my new Thinkpad where the backlight works but the 3 states are not properly shown on the slider when pressing FN+Spacebar. They're off by one, as in the keyboard backlight will ...
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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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Screen brightness not dimming before screen blank on ubuntu 22.10
I tried to dim screen brightness below minimum.
did change values in /sys/class/backlight/intel_backlight/brightness....
now screen brightness is not dimming before screen goes blank on ubuntu 22.10. ...
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Clevo keyboard backlight won't turn off after upgrading to Ubuntu 22.04
When I upgraded from Ubuntu 20.04 to 22.04, my laptop keyboard backlight got stuck as permanently on. The extension I was using to control the backlight, clevo-keyboard-gnome-extension, "is ...
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How do I turn off backlight of keyboard?
I've tried xset led 3, xset led off, xbacklight -set 00,
sudo find /sys/devices/platform/ -name leds returns nothing, so I couldn't try that.
sudo find /sys/devices -name leds returns /sys/devices/...
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