Questions tagged [backlight]
A backlight is a form of illumination used in liquid crystal displays (LCDs).
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Can't Adjust Screen Brightness on Lenovo Legion 5 15ACH6H AMDGPU Ryzen 5800H Ubuntu 21.10
Got this device (Lenovo Legion 5 Gen 6) a few days ago, setting up Ubuntu (dual boot alongside Windows) on it has been a real hassle. Wifi didn't work out of the box, found out that Mediatek MT7921e ...
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Hirsute/Impish - Laptop backlight brightness not controllable with nvidia-drivers-470
I updated my nVidia drivers from 460 to 470 in order to use GloriousEggroll's fork of Proton with Steam. Since then, my laptop's brightness has been stuck on full. The GUI brightness control slides ...
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NVidia backlight control (Again) Ubuntu 21.04
Wasn't sure where to post this, so it's in both the forums and also AskUbuntu. Sorry for the cross posting.
Hi,
I've been using Ubuntu for about a year now and have just bought a new laptop.
I ...
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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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Brightness and sound not working after downgrading to 18.04 from 20.04 on dell latitude 3420 intel iris graphics
I have received my laptop(dell latitude 3420) pre-installed with ubuntu 20.04, as there is a personal requirement I have removed 20.04 and installed 18.04. After installing 18.04 I found sound is not ...
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Lost macbook pro LCD backlight brightness controls after installing nvidia driver
I installed Ubuntu 20.04 LTS with the 5.11.0-34-generic kernel on my mid-2009 macbook pro which has nvidia geforce 9400M graphics hardware. Suspend and wake from suspend does not work with the nouveau ...
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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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Ubuntu 20.04. How do I turn on the keyboard backlight of my 2010 model Acer Aspire 5745?
I am using Ubuntu 20.04. I have an old Acer Aspire 5745-7247 I purchased back in 2010. I looked at the Ubuntu keyboard shortcut options in the keyboard settings, and keyboard backlight isn't listed ...
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How Do I Configure Ubuntu 21.04 so the Display's Backlight Goes Off when the Display is Locked
I am running Ubuntu 21.04 LTS on a MacBookPro (5.3 model).
The display's backlight does not go off when the computer is inactive (Apple Logo is always lit).
Configuration:
I was getting a purple ...
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Laptop Ubuntu 21.04 brightness can't be adjusted
I received my new laptop with Ubuntu 21.04 on it, Nvidia 3070 GPU and Ryzen 9 5000 series CPU (with internal GPU). Running kernel 5.11.0-25-generic. Gnome tries to render most things using the Ryzen ...
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Save and restore backlight on hot shutdown
I have a system on which we regularly perform a "hot" shutdown - plug out the power without issuing a shutdown command. The problem is that the backlight doesn't get saved and restored ...
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No way of changing the screen brightness in Ubuntu Studio 20.04 LTS on a acer TravelMate
I am working on a Acer Travelmate 5360G with dual boot, Lubuntu 18.04 and Ubuntu Studio 20.04. In 18.04 I could not change brightness with Fn + ArrowLeft and Fn + ArrowRight, but I made a little ...
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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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keyboard backlight ubuntu 21.04
I've just upgraded my ubuntu from focal fossa to the recent version 21.04 but now my external keyboard backlight is not working. It was working previously using "xset led on" on terminal and ...
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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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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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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 ...
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Where is the Lubuntu default backlight icon stored?
I have recently installed Lubuntu and have everything working as I want, except for the backlight icon in the taskbar I have at the top of my screen. I can't work out where it is being sourced from.
...
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Changing brightness settings has no effect on Ubuntu 20.10
Note: This is not a duplicate of Ubuntu 20.04 brightness adjust not working, Cannot change brightness (Ubuntu 16.04 LTS and onward) or Unable to change brightness in settings because the answers do ...
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Trouble using function keys to change screen brightness, sleep and adjusting keyboard backlight on ROG Zephyrus G15 running Ubuntu 20.04 LTS
I installed Ubuntu 20.04 on my ASUS ROG Zephyrus G15. I am not able to use the following keyboard action keys shortcuts(Fn+Function keys):
Screen brightness(Up:Fn+F7 / Down:Fn+F8)
Keyboard backlight(...
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Change screen brightness increment
I am on a stock Ubuntu 20.04 LTS machine with gnome. Using the brightness controls on my keyboard ('fn' + left/right arrow keys), I can adjust the screen brightness up or down (this brings up a gnome-...
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Configure Ubuntu 20.04 server on RPI4 to turn off external HDMI backlight after inactivity timeout
I've installed Ubuntu 20.04 server on an RPI4, and want to configure it to disable the external HDMI LCD monitor backlight after a certain amount of inactivity. Not simple screen blanking as shown in ...
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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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Brightness control not working (lenovo + intel tiger lake + ubuntu 20.04)
I just got a new Lenovo with an Intel Core i3-1115G5 with integrated graphics. After a fresh install of Ubuntu 20.04 the Fn keys that are supposed to control the brightness do not work. The brightness ...
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how to re-install zlib1g_1.2.11 from root access
First, writing from mobile as Ubuntu 18.04 LTS is failing to boot. I have access to 'root@user:~#' from the recovery menu. I have updated the backlight setting (systemctl mask systemd-backlight@...
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keyboard backlight Acer Nitro5 AN515-55 Ubuntu 20.10 works but 2 question
My Acer nitro5 AN5-15-55 laptop keyboard backlight is working , only red is available, (and I cannot adjust keyboard backlight brightness), but
the back light 'sleeps' when I am not typing? I can't ...
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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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Cannot adjust screen backlight Ubuntu 20.04 on Lenovo Legion Y7000P2020H
I have Ubuntu 20.04 installed on my Lenovo Y7000P2020H laptop alongside Windows 10. I can adjust my screen brightness in Windows but not in Ubuntu 20.04. Neither the fn keys nor the brightness scroll ...
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Lenovo Legion 5P Screen Brightness stuck at max
I just got a new Lenovo 5p (15IMH05H) and got xubuntu on it
But the screen is stuck at max brightness and it just won't turn down
The controls works, it sets the values in /sys/class/backlight/ and ...
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MacBook Pro screen brightness adjust not working (15" mid 2014 model w/ GeForce 750M, Ubuntu 20.04.1 LTS)
Issue
I installed Ubuntu 20.04.1 LTS on my MacBook Pro 15" Mid 2014. As many others, I can not get the brightness adjustment to work. Whenever I press the corresponding keys F1, F2 the brightness ...
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Sudden black screen with backlight on after teardown
My LG S43 laptop has dual-boot Windows 10 (upgraded from Windows 8) and Ubuntu 18.04.5 LTS. It worked fine for 2 years, but recently I decided to open it up to clean the fan and replace the thermal ...
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Asus AMD Laptop keyboard backlight (20.04)
I'm new to Linux and I'm trying to get my dual boot system set up (Asus Rog laptop with AMD Ryzen 7 and NVIDIA GPU). This in its self has presented its own problems but I have updated my kernel to 5.8 ...
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Turning off ASUS aura in Ubuntu 20.04
I have an ASUS A15 with Ubuntu 20.04 installed. There's a rainbow backlight on the keyboard that might be pleasant if I could control it, but I also think it's eating the battery. I'd like to turn it ...
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Dell Inspiron 3593, Linux Ubuntu - how to change backlight PWM frequency? intel_reg read 0xC8254 doesn't work
I would like to increase screen backlight PWM frequency in Dell Inspiron 3593 with factory installed Ubuntu (this laptop, like many other Dell models, probably has only 200 Hz). I read that it can be ...
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Replaced screen for my laptop, now can't control brightness (16.04)
I replaced the broken screen on my laptop (System76 Gazelle 11, rebranded Clevo W60RZ1, running 16.04) with one I ordered from a replacement screen site and I can no longer control the brightness from ...
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Can't change brightness on HP Envy x360 13z-ay000 laptop (Ubuntu 20.04)
I just installed ubuntu 20.04 on my laptop and the brightness controls do not work. When I press the built in brightness control keys, the brightness bar pops up and goes up and down but it doesn't ...
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brightness not working (Ideapad)
I recently installed Ubuntu 20.04 on an Ideapad 3. As per title I can't control the brightness in any way. Using the function keys to change it has the only effect of editing the "sys/class/...
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Dell ACPI Backlight brightness doesn't change on 20.04
I have a Dell G3 3579 (Secure Boot Disabled) with Ubuntu 20.04 fully updated. The brightness cannot be changed in either the OS or with the hardware keyboard buttons. Here's what I tried:
I ...
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Two display backlight devices (powertop) draining battery life in Ubuntu 18.04
I hardly getting 1hour battery life on my hp laptop,I found that two instances with same name (from PowerTop v2.9 statistics) draining huge amount of battery. please any solution.
here is the ...
user690027
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How do I set default screen brightness?
Before you say this is a duplicate, I've already looked at this and this and that did not solve my problem.
I installed Ubuntu 20.04 LTS and ever since the beginning it has maximum brightness by ...
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Brightness control by slider not working
I accidentally used "chmod -R 755" command in the root directory and halfway through the command executing I force shut downed my system. Now the boot time has gotten slower and also sudo ...
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xbacklight No outputs have backlight property
When I try running xbacklight -inc 10 I get an error message "No outputs have backlight property"
I've searched the issue and found several answers usually suggesting some form of modifying /etc/X11/...
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Cannot get backlight controls to work for an external monitor on a NUC on Ubuntu Server 20.04
I am trying to set up backlight controls, but cannot find a way to make it work.
By default I have /sys/class/backlight/acpi_video0, but that does not respond to my brightness settings.
Knowing that ...
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Cannot adjust screen brightness 20.04 AMD APU
Using a Lenovo Slim 7 with 4700u and vega 8 processor. Have tried just about every distro even arch and I cannot get control the brightness. My screen just stays bright non-stop. I have edited the ...
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Brightness problem on Ubuntu 20.04 (System panel works, but nothing change)
I just installed ubuntu 20.04. Backlight control works through the brightness applet and works via hotkeys, but nothing change, the display brightness remains the same. Here's what I've done:
...
user1088004
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Unable to adjust screen brightness on dual-booted Macbook Pro (Mid-2010 13'')
I've recently installed Ubuntu 18.04 on my old Macbook Pro (mid-2010, 13'', Intel Core Duo) running a dual-boot with macOS as per these instructions. Everything appears to be running smoothly, but I ...
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Brightness Controller is not working on Laptop HP Pavilion Dv7 - Ubuntu 18.04 Bionic Beaver
I'm using Ubuntu 18.04.4, and since I've installed it the Brightness controller doesn't work.
I press the Function Key + F2 or F3, and even when the animation pops up, and shows increasing or ...
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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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Keyboard backlight on Samsung S50 Style
I can't find a way to turn my laptop's keyboard backlight on. It's a Samsung S50 Style with Ubuntu 19.10.
So far, I tried:
xset led
variations with xmodmap
working with /sys/class/leds files
looking ...
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How can the keyboard backlight be prevented from switching on when a power supply is connected in Ubuntu 18.04 running the MATE desktop environment?
If I have the power supply cable connected to the ThinkPad X390 here with the keyboard backlight switched off and then I disconnect and then reconnect the power cable, the keyboard backlight switches ...
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