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36 votes
Accepted

Dell XPS 13 9370: screen brightness changes based on window contents

According to Dell_Guy on the Dell.com community forums: You can fix this by disabling Dynamic Brightness Control under the BIOS settings. Original Quote from Link: You can go into BIOS settings (...
Michael Frank's user avatar
23 votes

Can't write to file /sys/class/backlight/acpi_video0/brightness (ubuntu)

As written in the Arch wiki (link), by default, only root can change the brightness by this method. To allow users in the video group to change the brightness, a udev rule such as the following can be ...
Manuel Schmitzberger's user avatar
23 votes
Accepted

Brightness keeps changing in Windows 10 x64

This was bugging me for years till I found answer in some obscure forum, here it the problem: https://support.microsoft.com/en-us/help/3046889/intel-display-power-saving-technology-settings-incorrect-...
Miroslav Saracevic's user avatar
21 votes

Laptop dimming display on dark backgrounds

An obscure forum post pointed me in the right direction: Search Windows for 'Intel' Select 'Intel HD Graphics Control Panel' Click the 'Power' square button Click 'On Battery' tab ...
Paul Lammertsma's user avatar
15 votes

How to disable automatic brightness setting on LG monitors?

In my LG monitor, which I purchased a few weeks before, this feature (automatically changing the brightness once every while) was annoying. I found that I can disable this feature by setting the ...
Alisa's user avatar
  • 423
15 votes

Dim screen below minimum brightness level

For Windows Intel users: right click the desktop and go to “Graphics Properties…”.  There you can reduce brightness for your screen.  This also works with dual monitors.
Netti's user avatar
  • 151
12 votes
Accepted

Do blue light filters actually reduce blue light?

During 2018 update I made the answer a bit wider than the question asked. Hopefully it helps to someone. Software tools like Redshift or f.lux adjust display color profiles towards red shades, so ...
miroxlav's user avatar
  • 13.7k
11 votes

Laptop Brightness dims when charger is unplugged(no solution)?

I know that this question is 2 years old, but this issue still pertains to this day, and might still be of relevance to some people. I'll be sharing a solution that I found. I'll guess that OP has a ...
Johnson Qu's user avatar
11 votes
Accepted

Dim screen below minimum brightness level

Is it possible to further dim the screen or obtain a value lower than 2700K in f.lux? You can use alt+pgdn to decrease brightness and alt+pgup to increase brightness.
DavidPostill's user avatar
  • 159k
11 votes
Accepted

How do I decrease the screen brightness in f.lux?

You can increase brightness with Alt+PgUp and decrease brightness with Alt+PgDn.
Stevoisiak's user avatar
  • 14.7k
9 votes

Laptop monitor brightness changes depending on image displayed

The provided solution addresses the issue but my computer did not have the intel system tray icon, but I found I could also access the configuration by right clicking on the desktop and choosing: ...
trex005's user avatar
  • 190
9 votes

How do I decrease the screen brightness in f.lux?

As the OP's answer specifies, you can increase and decrease brightness with Alt+PgUp and Alt+PgDn. However, on Windows, these hotkeys were disabled by default for me. You can activate these by ...
Mandar M.'s user avatar
8 votes

Dim screen past the minimum on Ubuntu

TLDR: Settings > Accessibility > Zoom Here is a last resort for anyone who tried the above and was unsuccessful (and made it here almost a decade after the initial question). My setup: Gnome, ...
emactaggart's user avatar
7 votes

Brightness keeps changing in Windows 10 x64

The other answers didn't work for me - here's how I fixed it: From your desktop, click the Intel Graphics Settings icon in the bottom right-hand corner. Then from the Intel Graphics Settings ...
Joe's user avatar
  • 171
7 votes
Accepted

Windows 10 laptop keeps adapting brightness ("Adaptive Brightness" is disabled)

Changing power plan settings did not work, you need to type ''run'' then type ''services.msc'' Search in the list for ''sensor monitoring service'' right click on it, properties and disable the ...
Origami 's user avatar
  • 2,129
7 votes

XFCE change brightness steps and/or change brightness key behavior

No need to recompile the xfce4-power-manager There really is no need to recompile xfce4-power-manager. Firstly, install xbacklight $ sudo apt install xbacklight Secondly, check whether you have ...
Serge Stroobandt's user avatar
6 votes

Brightness changes while "Adaptive Brightness" is disabled in Windows 8.1/10 with Intel HD Graphics

So i just fixed this problem temporarily. What i did is i went to Device Manager, then went to Display adapters. Now i have 2 graphics cards in my system, one is an integrated Intel HD4000 and the ...
Missedchip's user avatar
6 votes

Do blue light filters actually reduce blue light?

Briefly: If the overall perceived brightness is the same or lower, and the screen looks less blue to you, then yes, the program reduced the amount of blue light coming off of the screen. So, all ...
Jamie Hanrahan's user avatar
6 votes

Brightness keeps changing in Windows 10 x64

Turning off Display Power Savings in Intel® Graphics Command Center fixed the issue for me. or in a new design
Antimonit's user avatar
  • 158
5 votes

How to change to brightness of an external display on a macbook pro running OSX 10.6

In 2020, there are at least two options: Lunar - https://lunar.fyi/ MonitorControl - https://formulae.brew.sh/cask/monitorcontrol My setup is a 2013 MacBook Pro with Mojave, connected to two ...
pavones's user avatar
  • 61
5 votes

Is it possible to enable software brightness control on Dell U2412M

It is possible to control firmware settings and configuration of monitors that support DDC/CI. Dell provides a custom-branded software by the name of Dell Display Manager, designed by EnTech Taiwan, ...
Jessie Westlake's user avatar
4 votes

Can't change monitor brightness

How to Locate Settings : Go To Menu. Go to "Setup and Reset" option. Go to "Magic Eco" Option. In magic Eco option Select "Power saving Off" Option. Go to your Brightness Setting. It will ...
Amol Jadhav's user avatar
4 votes

Screen brightness setting maxed but not bright

SOLVED - Go to power options, high performance, change plan settings, advanced, display, change enable adaptive brightness to off
Brian's user avatar
  • 41
4 votes

Samsung laptop won't adjust screen brightness

My system is a ATIV Book 8, model NP880Z5E-X01UB. Also Intel HD 4000 and Radeon 8700M GPUs. I recently updated W10 to anniversary edition and ran into this issue yet again. I have no idea how I was ...
mikesjawnbit's user avatar
4 votes
Accepted

How do I decrease the brightness of my screen below the minimum on Windows 8?

f.lux has a hidden feature which allows you to decrease your screen's brightness below the minimum set by Windows. You can use alt+pgdn to decrease brightness and alt+pgup to increase brightness. ...
Stevoisiak's user avatar
  • 14.7k
4 votes

Dim screen below minimum brightness level

Use an app called dimmer made by Nelson Pires. It can dim your screen farther than Windows will allow. The link may change https://www.nelsonpires.com/software/dimmer
Peter OLoughlin's user avatar
4 votes
Accepted

Should the display's color match the wall?

You are confusing two different issues, ambient light and color temperatures. The light emitted from the monitor should match the ambient light in the room. Using a bright monitor in a dark room (or ...
Keltari's user avatar
  • 73.6k
3 votes

How can I dim my computer screen beyond the minimum?

You can get the biggest possible dim range with Iris. Here is a normal screen with Brightness on 100% If you set Iris to 50% brightness the screen will look like this You can go as low as 10% if ...
Daniel Georgiev's user avatar
3 votes

Laptop dimming display on dark backgrounds

For anyone who doesn't have the Power Saving Technology option in Intel Graphics Control Panel (I only had a Panel Self-Refresh Enable/Disable option) follow the instructions in the first answer, from ...
lmb's user avatar
  • 171
3 votes

Laptop dimming display on dark backgrounds

Such annoying feature in Philips BDM4065 monitor was caused by its "SmartContrast" setting turned on. Turning it off resolved the problem completely. (This is not an advice for built-in laptop ...
rha's user avatar
  • 131

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