Questions tagged [brightness]
Questions related to screen brightness.
336
questions
93
votes
20
answers
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How can I dim my computer screen beyond the minimum?
I usually just use Fn + Left or Fn + Right to adjust my screen's brightness but the minimum settings are still too bright for me (especially when I'm working at night). I tried going through the Power ...
- 11.1k
63
votes
9
answers
105k
views
Brightness changes while "Adaptive Brightness" is disabled in Windows 8.1/10 with Intel HD Graphics
The brightness changes with the colors displayed on the screen on my Lenovo Thinkpads with Intel HD Graphics. Light colors make the screen brighter, dark make it darker. Same behavior in Windows 8.1 ...
- 1,373
61
votes
11
answers
120k
views
Laptop monitor brightness changes depending on image displayed
I have a windows 8 laptop. My desktop background is very dark (almost black) and when i have no windows open, my brightness dims. When i open an application that is primarily white (google chrome's ...
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48
votes
7
answers
147k
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How to adjust monitor's backlight brightness in Windows
My monitor is more than an arm's length away from me, so adjusting its backlight brightness is quite inconvenient.
Is there a way in Windows to adjust the backlight using the keyboard and/or mouse ...
- 3,140
34
votes
3
answers
118k
views
How to disable automatic brightness setting on LG monitors?
I have two LG monitors (both 23MB35PM) which have an annoying and distracting feature of automatically changing their brightness at random times, probably due to some power saving mechanism.
How can ...
- 1,872
33
votes
1
answer
10k
views
Dell XPS 13 9370: screen brightness changes based on window contents
On my new Dell XPS 13 9370, it seems that the display backlight brightness is adjusted based on the brightness of whatever's on the screen.
For example, say I have Sublime Text open with a dark theme,...
- 7,388
24
votes
6
answers
35k
views
Can't write to file /sys/class/backlight/acpi_video0/brightness (ubuntu)
I am trying to change the brightness by overwriting the value on this file:
sudo echo 5 > /sys/class/backlight/acpi_video0/brightness
-bash: /sys/class/backlight/acpi_video0/brightness: Permission ...
Kei Nivky
23
votes
7
answers
14k
views
Is there a work around to configure brightness or color on a DisplayLink monitor?
I run 3 monitors in addition to my laptop display at work - two of the monitors are using DisplayLink adapters. I've always thought that all my displays were too bright (and possibly give me ...
- 353
23
votes
6
answers
397k
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How to properly adjust monitor brightness and contrast? [closed]
This days, it seems that I either go worse with my eyes or some settings with contrast and brightness have been changed.
However, I have been searching now for some tutorial on how to adjust contrast ...
- 331
23
votes
7
answers
80k
views
How to prevent laptop screen brightness from changing when un/plugging battery power
When I am using my laptop, I continually adjust the screen's brightness based on the lighting conditions in the room (e.g. how much light is coming in from windows, etc.). But if I unplug the laptop ...
- 331
21
votes
8
answers
37k
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How to change brightness on CRT display through the Linux command line?
I have a Debian Linux desktop and a CRT display. I want to change the screen's brightness without using the monitor's brightness controls. How can I do this? Is this possible in the command line or is ...
- 377
20
votes
12
answers
97k
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Brightness keeps changing in Windows 10 x64
I have tried everything, going to advanced power settings, system settings but nothing. I have also tried to go to Intel options but i don't see any option to turn off power saving so I don't know ...
- 313
20
votes
8
answers
38k
views
How to disable auto brightening LCD
I am not talking about adjusting screen brightness through power management (this is a laptop), I'm not talking about how the screen brightness setting may be different between 'plugged in' and '...
- 461
19
votes
7
answers
26k
views
Laptop dimming display on dark backgrounds
My Acer laptop running Windows 10 has a very annoying feature: when running on battery, the LCD backlight dims gradually when displaying a dark screen and brightens gradually when displaying light ...
- 4,176
18
votes
7
answers
20k
views
Is it possible to enable software brightness control on Dell U2412M
Well, I just wanted this yes/no simple question to Dell e-mail support. Their web site required service code just to send an e-mail. Then I tried their "technical" chat support. Some Indian person ...
- 3,974
16
votes
4
answers
63k
views
Dim screen below minimum brightness level
I have both set my screen brightness to 0% in Windows 10 and activated f.lux at the lowest possible value (2700K), but I still think it's too bright.
Is it possible to further dim the screen or ...
- 359
14
votes
3
answers
18k
views
Do blue light filters actually reduce blue light?
I'm using Redshift to reduce how much blue light my computer screen emits, which is supposed to be more relaxing for the eyes.
So I wonder, if the screen is visibly more reddish, does that mean that ...
- 255
12
votes
3
answers
19k
views
Dim screen past the minimum on Ubuntu
My laptop's screen is far too bright at night, even if I set it to minimum brightness. I know that it is capable of being dimmer, because Windows will dim it further if I leave it idle. However, I can'...
- 2,485
12
votes
5
answers
65k
views
Can't change monitor brightness
I've a Samsung SyncMaster B1930 Monitor. I've installed all the graphics drivers.
I'm unable to set or change the monitor brightness because it says that MagicEco is ON. I've also downloaded some of ...
- 141
12
votes
2
answers
69k
views
Brightness settings gone, how do I bring it back?
I have a VAIO CW laptop with Windows 7 x64, and after installing new NVIDIA drivers, my screen brightness controls are no longer available. (Not in the control center, not in the power options, ...
- 23.7k
12
votes
10
answers
184k
views
Laptop Brightness dims when charger is unplugged(no solution)?
Hello yesterday i bought DELL Inspiron 15 (3542) win 8.1. And noticed that if charger is plugged on, screen becomes brighter, and after unplugging dimmer. Of course i tried adjust screen brightness, I'...
- 131
12
votes
6
answers
22k
views
XFCE change brightness steps and/or change brightness key behavior
I'm trying to change the brightness steps in XFCE from 10 to 20. I'd like the ability to gradually change the laptop's brightness by 5% instead of 10%. Is there a way to set this up with a config file ...
- 479
10
votes
1
answer
16k
views
Windows 7 brightness slider suddenly gone
Brightness slider in power plan settings recently disappeared.
How to fix it?
- 1,953
10
votes
1
answer
4k
views
How can I find a light sensor to adapt my monitor's brightness to the room?
Where can I find a standalone light sensor that updates the brightness of my screen to match the ambient light level in realtime for Windows 7? My monitor does not have a sensor. I had the idea ...
- 354
10
votes
2
answers
2k
views
Is there a way to display a real-time image histogram of all or part of what my monitor is displaying?
I am trying to adjust brightness/contrast in photo/video editing software that does not provide image histograms. What I would like is a piece of windows software that displays a real-time histogram ...
- 101
9
votes
2
answers
14k
views
How do I decrease the screen brightness in f.lux?
I've heard that, in addition to controlling screen temperature, you can use f.lux to decrease the brightness of your screen. However, I couldn't find a brightness option in settings, nor could I find ...
- 14.6k
8
votes
7
answers
28k
views
How to change to brightness of an external display on a macbook pro running OSX 10.6
I am using a macbook pro running OSX 10.6 snow leopard.
In System Preferences/Displays/Display, I can change the brightness of the macbook's screen. However, this option is not available for the ...
- 183
8
votes
6
answers
75k
views
How do I change the brightness and contrast of YouTube videos on-the-fly?
I'm tired of different video black levels which take down the quality of the video.
Some examples, depending on your brightness level you might or might not see the difference:
If you can't see the ...
- 57.5k
8
votes
5
answers
37k
views
Adjust screen brightness directly from taskbar in Windows 8?
Is there any way I could adjust screen brightness directly from the tray by clicking the battery icon and moving a slider in the window that pops up (below)?
Having to click "Adjust screen brightness"...
- 23.7k
8
votes
5
answers
8k
views
Can I fine-tune my screen brightness?
My laptop is Lenovo T400, and my OS is Ubuntu 10.10. I change the brightness of my screen by pressing the FN key and one of the two keys for increasing/decreasing brightness.
The brightness I feel ...
- 17.3k
8
votes
16
answers
169k
views
Screen brightness setting maxed but not bright
Screen brightness setting maxed but not bright.
Hello everyone, this is my first post regarding technical support ever, thanks in advance for any help provided.
I have a Lenovo flex 15 laptop that ...
- 91
8
votes
1
answer
3k
views
Brightness adjustment interval in windows
I have a windows laptop in which we can use the Fn+Arrow Key to change the brightness of the screen. The default interval of brightness interval is 10%.
Is there any way I can reduce this interval so ...
- 243
7
votes
4
answers
48k
views
Why does my screen dim on a desktop installation of Windows 7?
Periodically, while using my Windows 7 Pro desktop installation, the screen suddenly dims. The brightness is about 75% normal (estimate). It's as if I am in a power-saving mode on a laptop running on ...
- 7,093
7
votes
1
answer
72k
views
How to increase brightness of laptop screen above maximum in BIOS on Linux/Windows?
Is it possible to increase the brightness of laptop screen above what's possible in BIOS and Ubuntu Linux/Windows ?
I have an old laptop (Lenovo-X200s) and the maximum brightness is rather dark. I ...
- 633
7
votes
2
answers
2k
views
Can I fine-tune my screen brightness keys? (Ubuntu Studio, Thinkpad T420s)
I am in a similar situation as question Can I fine-tune my screen brightness? . For me, Thinkpad T420s and Ubuntu Studio 11.10. The brightness keys work fine but the increments are too large. I have ...
- 685
7
votes
4
answers
10k
views
How to completely turn off adaptive screen brightness based on content?
I have a Lenovo Yoga C940-15IRH (81TE) laptop running Windows 10 that automatically adjusts the brightness of the display based on the content being displayed; however, when the screen displays white ...
- 175
7
votes
4
answers
6k
views
How to switch off auto brightness on a Lenovo W530
The auto brightness "feature" of Windows 8.x is driving me crazy. I would like to switch it off on my Lenovo W530.
Adaptive Brightness is disabled in Power Options
the Sensor Monitoring Service is ...
- 3,253
7
votes
1
answer
1k
views
acpi not running action
I have a scripts to control display brightness:
/etc/acpi/actions/bl_down.sh:
#!/bin/sh
bl_device=/sys/class/backlight/intel_backlight/brightness
echo $(($(/usr/bin/cat $bl_device)-10)) | sudo /usr/...
- 617
6
votes
3
answers
28k
views
Adjusting laptop display brightness doesn't work in Linux Mint 14
I recently installed Linux Mint 14 on my Samsung R580 laptop. The Fn-keys worked out of the box, I can switch screens, adjust volume and so on.
When I try to adjust the brightness (Fn + ↑/↓), the ...
- 153
6
votes
3
answers
47k
views
How to disable the light sensor on a Vaio laptop
I just got a new Vaio laptop. It is great.
However, the ambient light sensor dims the screen brightness and prevents me from changing it.
Is there a way to disable the ambient light sensor and go ...
- 251
6
votes
1
answer
2k
views
Why does running Redshift commands from crontab does not seem to work?
About redshift:
Redshift adjusts the color temperature of your screen according to your surroundings.
A typical redshift command that I use is redshift -O 9999 which sets the screen color ...
- 131
6
votes
4
answers
40k
views
I can't control my Dell's brightness
I bought new Dell Inspiron 3521 with Linux installed. I've installed Windows 7. Everything would be alright but I can't brighten my screen. It looks like it is at the lowest brightness level. The ...
- 143
6
votes
2
answers
5k
views
How to change brightness in FreeBSD?
I installed FreeBSD 10.3 stable on my HP laptop and installed Mate desktop, but I can not change laptop's brightness.
I used xrandr, xbacklight, redshift and they did not work. I loaded acpi_video ...
- 161
5
votes
4
answers
186
views
Are TFTs intended for brightly lit enviroments only? [closed]
I recently bought a 22" (LG) TFT to replace my old 17" CRT monitor. The very first thing I noticed was how bright it was. I reduced the brightness from 100 to just 20 and toned down the gammma and ...
5
votes
4
answers
11k
views
Software to auto adjust brightness of screen(s) from webcam
Does any windows software exist to auto-adjust the brightness of a monitor (laptop screen and external monitor) based on the amount of light that a connected webcam senses?
- 22.7k
5
votes
1
answer
5k
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How do I decrease the brightness of my screen below the minimum on Windows 8?
The minimum brightness on my desktop monitor is far too bright. I need a way to reduce the brightness of my screen below the minimum. On my Mac, the app Brightness Slider worked perfectly for this ...
- 215
5
votes
3
answers
3k
views
How to set the laptop screen brightness programatically?
I'm currently migrating to openbox without gnome session. In unity i can use the vendor keys to set the screen brightness, but in openbox I'm on my own.
/sys/class/backlight/acpi_video0/brightness ...
user127199
5
votes
1
answer
2k
views
MacBook Air screen is too bright even on the lowest setting
Is there a tweak, hack, or piece of software that can adjust the brightness of the MacBook Air's screen below the settings that MacOS X allows by default?
In low light the lowest brightness setting ...
- 279
5
votes
2
answers
1k
views
Backlight control in Eee PC 1015PEM
When I boot my Linux with acpi_osi=Linux, I can control backlight brightness from almost_zero to moderately_bright. (Actually, the maximum revolves around the brightness level that is set before Linux ...
- 17.3k
5
votes
2
answers
2k
views
Change Windows 10 brightness increment level
I am on windows 10 on Lenovo thinkpad carbon x1 with Intel(R) HD Graphics. When I press Fn+Brightness key, the brightness increase/decreases by 10. I want to change that increment value to 1. The only ...
- 151