Questions tagged [brightness]

Questions related to screen brightness.

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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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45 views

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: ...
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EYE STRAIN ON UBUNTU : ALL SUGGESTED FIXES [closed]

OSX and W10 have several GUI apps to help control redshift for eye strain. As you know, long hours before the bright screen emitting blue light can be very irritating for the eyes. My eyes used to ...
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Backlight/Brightness Malfunctioning

Running 20.04 on an early-2008 iMac. $ cat /proc/cmdline BOOT_IMAGE=/boot/vmlinuz-5.4.0-31-generic root=UUID=3acf183b-0264-4c56-a18e-0fec33417d68 ro quiet splash acpi_osi=Linux acpi_backlight=vendor ...
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Energy Saving - System Settings Module not working

New here, new to Kubuntu, and I'm loving it! I'm running into an error though, and I can't find an answer anywhere. I'm technically running 19.10 Ubuntu with kernel 5.3.0-40-generic and I basically ...
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56 views

Ubuntu not recognizing the primary display

I am using a laptop which has NVIDIA GTX 1050Ti grapghics card. I installed Ubuntu 18.04.4 LTS. However after the installation, as Ubuntu wasn't recognizing the display, the screen resolution was very ...
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Which command can I run to adjust brightness of my screen? [duplicate]

My LUbuntu 18.04's lxpanel is not working. Which command can I run to adjust brightness of my screen? Thanks.
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1answer
66 views

No brightness option in Ubuntu 20.04

After installing Ubuntu 20.04 I get the brightness option as in normal Ubuntu it should be, but I have a problem that when I start Ubuntu it used to stuck on the starting screen so for that I run sudo ...
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How can I disable auto-brightness on dell xps 9300 running Ubuntu 20.04

I tried using dconf-editor, but disable auto-brightness had no effect. If I shift my legs the laptop brightness changes. Its really annoying and should be turned off.
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20.04 - I want Wi-Fi, webcam on but blank screen

I am running 20.04 on a Lenovo V145-14AST. After OS install, this particular model requires fiddling with the Wi-Fi adaptor drivers, which I have taken care of, so this is known not to be the root of ...
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My screen brightness is too low on Lenovo Thinkpad. Can hardly see what's going on

How can I increase the brightness of my laptop screen? here is the description: *-display description: VGA compatible controller product: HD Graphics 5500 vendor: Intel Corporation ...
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Dim Display in Ubuntu 20.04

i recently upgraded my HP laptop from 19.10 to 20.04 , after the upgrade my screen is always in dim display , if i watch videos in full screen , display getting correctly else dim display only. Screen ...
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How do you dim desktop screen 20.04 LTS?

It's always so bright. How do you dim it so it's not hurting your eyes.
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Ubuntu 20.04 laptop screen problems

Since I upgraded from Ubuntu 19.10 to 20.04 (Gnome 3.36.1) I have some problems with the screen of my laptop (Clevo N151ZU, i7 8565U): -I can't change the screen brigthness with my keyboard (Fn + F8/...
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I am not able to switch on -off my ASUS ROG G531D Backlite

I am not able to switch ON-Off my backlit or neither able to change it colour and brightness. please help me with solution.
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19.10: Brightness keys on Xubuntu don't change brightness but switch between mute/unmute instead

I have been using Xubuntu as single boot on my laptop for about one year and everything worked great, the keys on the keyboard did what they were meant to do. Then i needed to install Windows 10 for ...
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136 views

How to control RGB lighting for Asus ROG laptop's built-in keyboard?

I have been looking for a solution to this problem for quite some time but I haven't managed to find any fixes. I have an Asus ROG Strix G731GT laptop running a dual-boot of Windows 10 & Ubuntu ...
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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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Screen brightness glitch when using ICC

So I followed this guide on installing ICC to control the brightness of my XPS-15 7590 OLED and this video shows that it is extremely glitchy regardless if I'm using the Fn keys or if I'm using the ...
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How do I disable automatic brightness?

I'm using vanilla Ubuntu 20.04 with an Intel IGP. I saw several similar questions here and almost all tell me to look under power options in configuration but I barely have any options there in power ...
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51 views

Fn Volume up/down keys not working

I have just installed Kubuntu 20.04. I want to adjust the volume using Fn + F2/F3, but it isn't quite working. It does work for adjusting the brightness of the screen and the key back lights. What ...
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1answer
31 views

Screen brightness changing randomly every 2-3 seconds

I have an issue with the brightness of my screen since I've done the 18.04 update. Basically the luminosity of the screen changes every 2 or 3 seconds which is very exhausting for the eyes. I've ...
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Nvidia settings reset randomly

Ubuntu 20.04 / elementary OS 5.1.3 Hera - both have this issue. GPU: Nvidia 1050ti. At random times suddenly my displays go to an odd brightness, if I open nvidia-settings it re-applies the settings ...
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make switching across windows smoother in Gnome 3

so here's the problem: when you have a dark IDE and a you have to switch back and forth with a light website page, you experience these abrupt brightness changes which hurt your pupils (they do not ...
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2answers
803 views

Ubuntu 20.04 brightness adjust not working

I am unable to adjust brightness levels through Gnome. I had the same issue with 18.04 but it was resolved there (honestly, I can't remember how). lspci|grep VGA 00:02.0 VGA compatible controller: ...
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Brightness and wifi fn keys not working and laptop not suspend Ubuntu 18.04

I have hp pavilion gaming i5 8300h , gtx 1050ti and i'm using Ubuntu 18.04. brightness fn (f5 and f6) and wifi fn (f12) are not working and when i turn of the screen it don't suspend but just give ...
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1answer
128 views

Can't change brightness in Kubuntu 18.04

I can't change the brightness in Kubuntu 18.04. I tried to do it with the keyboard shortcuts (Fn + ←/→) and in the Battery and brightness section in the Task Manager.
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18.04 can't adjust screen brightness on Lenovo Thinkpad T510

I upgraded my Lenovo ThinkPad T510 from Ubuntu 16.04 to 18.04. At first the PC would freeze, but I fixed it with Ubuntu Bionic Beaver freezes randomly Now, I can't adjust the screen brightness. The ...
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Brightness control and microphone level control disappeared after installing old kernel and booting in old kernel

Today I have been fiddling with kernels, since my microphone and webcam weren't working. Sadly, they still don't work, but due to the fiddling I got even more problems. I was always working on kernel ...
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Automatic brightness control including external monitor

There are existing threads about controlling in software the brightness of an external display ( control brightness on the second monitor , Changing the screen brightness of the external screen , ...
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1answer
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Brightness control with hotkeys doesn't work. Ubuntu 18.04

I tried solution here: Brightness problem Ubuntu 18.04 LTS But it doesn't work. Lenovo IdeaPad L340. I have tested it with all 3 drivers. But none works.
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Display not working properly with NVIDIA card

I recently got a new Lenovo y540 legion with NVIDIA GeForce card and installed Ubuntu 18.04.4 LTS on it. When I logged in first time I couldn't set my brightness the way I wanted because it was locked ...
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1answer
160 views

Brightness Alters between 0 and 100

I have recently installed Ubuntu 18.04 for the very first time. Unfortunately, I am having problems with the brightness controls in Linux. What further compounds my problem is that I have not found ...
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Ubuntu 19.10 - Screen brightness is not saved across sessions. Where is the setting?

I installed Ubuntu Studio 19.10 on my laptop (MSI GT72 6QD). The screen is displayed full brightness on login, every time. And every time I have to lower the brightness. This setting should be saved ...
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Automatic Screen Dim

I am using Ubuntu 19.10 and I don't know how to disable automatic screen dim. My problem is, when I am in a bright browser and then change to a dark website or so, my screen gets darker automatically. ...
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1answer
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Annoying brightness thing on Dell Laptop

Ok, so I'm probably being picky here... But this is driving me crazy. I have a Dell Inspiron 3442 laptop, it comes with both an Intel video card and a Nvidia 3D card. 00:02.0 VGA compatible ...
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In Ubuntu 18.04 the Contrast in one of the monitors auto adjusts to 0

I am running Ubuntu 18.04 on a Lenovo desktop with dual monitors. The PC has NVIDIA as the video card. Once in a while in one of the monitors, the "Contrast" popup appears and it automatically adjusts ...
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101 views

commands work in terminal but don’t work if added as a custom keyboard shortcut

After things like xbacklight, light and acpilight didn’t work, I tried to add a custom shortcut for brightness control as my function keys don’t work. I found a workaround on YouTube which helped to ...
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1answer
62 views

OLED Brightness fix at startup

I am actually new in the ubuntu world so I am actually stuck in a easy issue, I guess (?) I own a dell 7590 xps 15, it has got an oled panel and the brightness slider does not work I found a script ...
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1answer
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Some Screen Problem

first time here! I'm having a problem and I need HELP I installed an add-on to dim my screen for the night, but the result was not so satisfying, the screen went automatically black, no way of seeing ...
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How do I achieve smoother dimming on my Lenovo X1 Carbon (4th gen) on 19.10?

When I press to dim the screen (Fn+F5) on my Thinkpad, the level it dims each press makes the screen seems to dim in 21 steps, which is quite the jump from each level. Can I change how many steps the ...
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After update to 18.04 the screen brightness slider stopped working

I am not 100% that it is related to the ->18.04 update, could be some other update. Nevertheless, it was a coincidence in time with the release update, so I think it might be it. In short, this ...
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1answer
35 views

Brightness keys not working ASUS ROGg531

I am using an ASUS ROG laptop with NVIDIA Graphics. I installed the nvidia x server driver using the driver manager in ubuntu 18.04. My volume keys work but my brightness keys do not. I tried ...
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66 views

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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51 views

Screen dims slightly when nothing moves at the screen… What do I do?

I'm on Ubuntu Studio 19.10, fresh install. The display dims ever so slightly 1 second after everything stops moving at the screen. It goes like 1% darker, enough for being an annoying event when ...
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1answer
92 views

Increase brightness in Laptop using console mode

I recently installed Ubuntu 18.04 on my Asus laptop with NVIDIA graphics and an Intel i5 CPU. ASUS ROG G531GD I accidentally decreased my screen brightness to 0 in the battery settings before I could ...
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347 views

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://imgur.com/a/7rLTsyr ) and then the systems ...
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1answer
138 views

18.04 no screen brightness control on MacBook Pro

Just installed Ubuntu 18.04 on a MacBook Pro, mid-2009, 13" scren, Core2 Duo CPU and GeForce 9400 GPU. It took a little looking around and tinkering to install and get WiFi up and running after ...
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7 views

Battery powered display colour/contrast change

I'm using ubuntu 18.04.4. When I'm using my laptop on battery power, it doesn't let me change the brightness and the main problem is it kinda lowers the contrast or something which makes it hard to ...
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42 views

External monitor via HDMI goes black randomly, Ubuntu 19.10

I'm connecting an external monitor, via HDMI, to my Lenovo running a Intel® HD Graphics 5500 (Broadwell GT2) and GNOME 3.34.2. The monitor switches to black, or even a dimmed brightness view, simply ...

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