Questions tagged [brightness]
Questions related to screen brightness.
1,656
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Ubuntu 22.04 unwanted auto dim, 'Automatic Brightness' doesn't exists in power settings
I recently installed Ubuntu 22.04 on my PC. I am experiencing some weird dimming behavior:
If I present a white image on my screen, the screen gets brighter
If I present a black image on my screen, ...
0
votes
1
answer
1k
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Brightness control not working on Lenovo IdeaPad Gaming 3 laptop in 22.04
I have a Lenovo laptop I bought in summer 2020. Back then, I remember installing Ubuntu 20.04 onto it and the brightness control and the touchpad both not working. A few months went by and a few ...
0
votes
1
answer
831
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Brightness Fn keys not working
I can't increase/decrease screen brightness with Fn-keys. This is a Lenovo Thinkpad L15. OS is xubuntu 22.04.
-The rest of Fn-keys work ok (e.g. volume up/down).
-Brightness slider in Power Manager ...
1
vote
0
answers
72
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After changing the graphics driver, it doesn’t detect the second HDMI display and I can’t change the brightness
After changing the graphics driver, it doesn't detect the second HDMI display and I can't change the brightness.
Hello.
My OS is Ubuntu 20.04. My graphics card is GTX 1660ti mobile and laptop HP OMEN.
...
1
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4
answers
3k
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Ubuntu 22.04.1 LTS - Not able to adjust brightness
Since the update to Ubuntu 22.04.1 LTS I am not able to adjust the brightness of my screens anymore.
I was using the Brightness Controller before, but it doesn't work
anymore.
I have no brightness ...
0
votes
0
answers
215
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"Screen Blank" option does not keep the screen off when connected to external monitor
On Ubuntu 22.04 (issue also noticed on many previous versions), in the power settings, I set the number of minutes of inactivity before the screen turns off under "Screen Blank". It works ...
1
vote
1
answer
960
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Ubuntu/Wayland: Turn off screen via FN keys
On my old laptop, I was able to turn off the screen by pressing FN + BRIGHTNESS DOWN until it reached 0 when I was running Linux Mint. Now, I want to replicate this on Ubuntu 20.04 with Wayland, but I ...
1
vote
0
answers
273
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Energy Manager error when reducing screen brightness during inactivity
Since installing Lubuntu 22.04 LTS the LXQt Power Manager has become unstable at some point. Going into your settings, in the settings section for "inactivity", I check the option "...
3
votes
1
answer
640
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How to disable auto brightness adjustment in Ubuntu 22.04?
Everytime most elements in my screen are white, brightness goes up. Then, some black elements appear and the screen's brightness goes down. How can I permanently disable this annoying behaviour?
I ...
0
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0
answers
218
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cannot adjust brightness
I slide the brightness slider under the volume control in the upper right corner, but no avail. I hold the fn key and tap F8 and F9 with no change in screen brightness. Keyboard backlight control ...
0
votes
0
answers
697
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How to configure the REDSHIFT program so that it does not change the brightness of the screen?
For "Night Light" I use Redshift software. Unfortunately, this program automatically changes the brightness of the external monitor to the default value: the value in the Lubuntu system ...
2
votes
2
answers
466
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Ubuntu 22.04 Lock Screen is changing the brightness level automatically - Asus Vivobook
I just installed Ubuntu 22.04 on my new laptop Asus Vivobook Pro 15 OLED. I noticed a weird behavior when the screens goes locked, the brightness level is automatically increased when the screen turns ...
2
votes
0
answers
57
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How do I change what variable gets changed when the brightness control is triggered?
I am facing a problem, I am not able to change the brightness on my dell G15 5515. Though the brightness control GUI shows up and reacts to brightness up and down key, it doesn't do anything.
But, I ...
3
votes
1
answer
2k
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Nvidia RTX 3060 in Ubuntu 22.04 - Flickering/Brightness controls not working
I have a Dell G15 with a Nvidia GeForce RTX 3060 Mobile graphic card. Just installed ubuntu 22.04 alongside with Windows, but I have two main problems:
Screen flickers randomly.
Brightness controls ...
1
vote
1
answer
713
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How to lower brightness beyond minimum for laptop screen in Ubuntu 22.04?
Problem
My laptop's screen remains too bright at night, even at the minimum brightness.
Solution I'd like
A tool that lets me change brightness beyond minimum brightness.
What I've tried already
...
2
votes
2
answers
340
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Brightness keeps changing (MSI PE60 2QE)
I am struggling with an issue with Ubuntu. The screen brightness keeps changing and it seems to happens after I change it. For example, I lower the screen brightness by one step and a couple of ...
0
votes
2
answers
2k
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Ubuntu 22.04 laptop brightness keys not working
I have a Lenovo Legion 7 laptop with Nvidia RTX 2070 GPU and the brightness keys on the laptop do not change the brightness at all (it stays on max brightness it seems). I tried adding some parameters ...
0
votes
1
answer
123
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How can I change brightness in [0,1]?
I use to increase or decrease the brightness of the monitor using xrandr command from this in Ubuntu 20.04. It gives the liberty of giving custom brightness that can vary from 0 to 1 irrespective of ...
0
votes
0
answers
134
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Brightness control on keyboard not working
The brightness control keys on the laptop keyboard are not identified on Ubuntu 22.04 LTS.
Tried looking up keystrokes using xev but the keystrokes are not reflected. The keys work on Windows. I have ...
0
votes
1
answer
127
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Laptop backlight adjusts max brightness during boot
I'm somewhat of a Ubuntu noob. I've been trying to fix this problem on and off for quite some time and figure I would just ask.
I'm using Ubuntu 20.04, everything was fine. My screen brightness was ...
0
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0
answers
239
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Can't disable auto brightness on Ubuntu 22.04
I'm looking for any solutions disable auto-brightness on Ubuntu, I'm so tired with it!
OS: Ubuntu 22.04
Machine: MSI-Modern-15-A5M
CPU: AMD® Ryzen 5 5500u with radeon graphics × 12
0
votes
1
answer
1k
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Can not change brightness Ubuntu 22.04 external monitor problem
I have problem controll brightness external monitor(hdmi) by Ubuntu software.
brightness-controller ubuntu cannot run to external monitor
xrandr --output XWAYLAND0 --brightness 0.5 cannot run to ...
0
votes
1
answer
113
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i've hit a bunch of keys at the same time accidentally and now my brightness buttons are not working on ubuntu 20.04
my dog walked on my laptop and now the brightness keys are not working. they are f6 and f7 for me. the sound keys also didn't work but I fixed them by going to settings > keyboard > shortcuts ...
1
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0
answers
413
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Gnome custom keyboard shortcut for monitor brightness increase not working
In Ubuntu 22.04 I can control my external monitor using ddccontrol. To increase brightness by 5%, I can type ddccontrol -r 0x10 -W 5 dev:/dev/i2c-6. To decrease brightness by 5%, I can type ddccontrol ...
0
votes
3
answers
2k
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Brightness problem on 22.04 LTS Amd ryzen 5600 with radeon graphics and NVIDIA RTX 3050
After installing Ubuntu 22.04 LTS on my DELL g15 5515 (With Amd ryzen 5600 with radeon graphics and NVIDIA RTX 3050 configuration) I installed the nvidia drivers 510.
I'm not able to change the ...
0
votes
0
answers
488
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Function keys for brightness (Fn+F5 and Fn+F6) do not work on my Ideapad 3 15ITL6
These key combos are not being picked up as acpi events, when I run acpi_listen, I get no output, but I do get output for some of the other function keys, like the volume controls.
I have tried just ...
0
votes
1
answer
746
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Commands for changing screen Brightness
Goal: In/decrease screen brightness (by "standard" in/decrements) via. one-liner commands.
Following this tutorial, no change occurred:
(base) moi@ubuntu-pcs:~$ sudo apt update
[sudo] ...
0
votes
0
answers
79
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System sometimes displays blinking cursor, won't boot when loading with acpi_backlight=vendor
A couple months ago I started experiencing an issue where the system occasionally will not boot into the desktop environment and simply displays a blinking cursor. When this happens, there is just a ...
4
votes
3
answers
5k
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how to disable automatic brightness ubuntu 22.04
I'm using ubuntu 22.04. It automaticly changes the brightness. In setting, my device has not the automatic brightness option. I realized that's hardware dependent. Even so my screen changes it’s ...
4
votes
2
answers
3k
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UBUNTU 22.04 LTS - Changing brightness with xrandr doesn't work
In the CLI, xrandr --output MONITOR_NAME --brightness 0.7 seemingly "works" because no feedback is shown.
After using xrandr --verbose | grep Brightness, Brightness: 0.70 is shown as output ...
3
votes
4
answers
3k
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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 ...
0
votes
2
answers
373
views
Maximum brightness change when plug in AC to laptop
I am on a Dell XPS 13 7390, shipped with Ubuntu, now on version 20.04.4 LTS.
I am pretty sure that maximum brightness setting, isn't really setting it to max.
I have never tried Windows on this ...
1
vote
0
answers
304
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Mouse and brightness not working on Ubuntu with Lenovo Ideapad slim 3i
My laptop is "Lenovo Ideapad slim 3i". I was trying to install Ubuntu with dual boot Windows 10 with a USB.
When the installation process starts asking: "Try Ubuntu" or "...
0
votes
1
answer
596
views
Adjusting screen brightness requires sudo
I have the issue, that after waking up from suspend, I often can't change the screen brightness via the fn buttons. Installing brightnessctl and trying to adjust the brightness via command line told ...
0
votes
0
answers
31
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Plugin mose doesn't work after suspending laptop
First my laptop specs:
Laptop model: Victus by HP Laptop 16-e0xxx
RAM:16GB
AMD Ryzen 7 5800H (16G)
Graphics card: NVidia RTX 3050
Current OS Ubuntu 20.04 lts
When I suspend my laptop I'm unable to ...
3
votes
1
answer
47
views
Same brightness control on laptop and desktop
When Ubuntu is run on a laptop, the brightness control allows to simply define the desired level of brightness. This control is not available on a desktop, probably because energy consumption is not ...
0
votes
1
answer
843
views
"xrandr --output XWAYLAND0 --brightness 0.50" doesn't work on ubuntu 22.04 LTS terminal
Before I was using ubuntu 20.04 LTS and the same command works fine. Now I change my laptop to MI Notebook Pro and install ubuntu 22.04 LTS which is a latest version of ubuntu and now xrandr --output ...
14
votes
8
answers
23k
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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 ...
0
votes
0
answers
186
views
Brightness control on a desktop PC
I have an Aerofara Aero Pro 2, a desktop mini-PC with Intel N5105 CPU. After upgrading from Ubuntu 21.10 to Ubuntu 22.04 LTS I noticed that in the top right menu there's a "Brightness" ...
1
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2
answers
1k
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Suspend, brightness and power button not working on Ubuntu 22.04
Currently, I'm using Ubuntu 22.04. I am not able to shut down my laptop using the power button as it's not showing any dialog box. I can only force the shutdown of the PC. And after suspending the PC ...
7
votes
0
answers
1k
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Ubuntu 22.04 / Modify Power Saver Behavior (Do Not Dim Screen)
First of all, I think it's really cool that Ubuntu 22.04 (I upgraded from 20.04, the last LTS version) now has the ability to switch between different profiles. Depending on what I do, I have times ...
1
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0
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135
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Unable to adjust brightness on Ubuntu 20.04
I am on Lubuntu 20.04, and the brightness controls in the settings and in brightness-controller are not working.
From Ubuntu 20.04 brightness adjust not working, I tried using brightness controller ...
1
vote
1
answer
234
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Why is my laptop main screen backlight not working?
I'm using a live USB drive and I'm trying to install Ubuntu 22.04 on my Dell Precision 7710 with Nvidia Quadro M3000M GPU and I'm facing a weird problem. My current graphics setup consists of two ...
1
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3
answers
1k
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22.04 jammy shows no brightness sliders under Settings > Power
Is this an intentional change in 22.04 LTS? Or is something just not recognizing the hardware correctly? Previously, I had both a Screen Brightness and Keyboard Brightness slider visible under ...
1
vote
1
answer
220
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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 ...
0
votes
1
answer
311
views
Not able to adjust brightness in Thinkpad E14 Laptop
My Laptop has the following configuration.
Processor: 11th Gen Intel® Core™ i5-1135G7 @ 2.40GHz × 8
Graphics: llvmpipe (LLVM 12.0.0, 256 bits)
OS Name: Ubuntu 20.04.3 LTS
GNOME Version: 3.36.8
I ...
1
vote
1
answer
750
views
Brightness control of secondary display (Ubuntu 22.04)
I used the following command
xrandr -q | grep " connected"
output was
XWAYLAND0 connected 1920x1080+1366+0 (normal left inverted right x axis y axis) 530mm x 290mm
XWAYLAND1 connected ...
0
votes
0
answers
981
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Keyboard brightness and fingerpring sensor not working on Samsung Galaxy Book Pro 360
I'm very new to Linux and decided to install ubuntu when buying my new laptop a few days ago. Everything else has worked flawlessly, but I can't adjust the keyboard brightness or get the fingerprint ...
0
votes
1
answer
379
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How to list all available brightness settings with ddcutil
I know I can see the current and max values with
ddcutil getvcp 0x10
VCP code 0x10 (Brightness ): current value = 75, max value = 100
But is there a way to see all the ...
0
votes
1
answer
504
views
Screen brightness goes to 10-15% when charger plugs
I have Ubuntu 21.10 installed on Lenovo Ideapad Gaming 3 with Ryzen 4600H and GTX1650.
The screen brightness have several problems with user interface. First one is after the reboot or turning on the ...