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Questions tagged [brightness]

Questions related to screen brightness.

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Lubuntu brightness/backlight issue

I freshly installed Lubuntu 18.10 with LXQT environment and here's my issue : I want to dim the backlight of my laptop with the keyboard shortcut (XF86) but when i press it, it changes the brightness(...
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How to visually and individually control external and integrated display brightness

I'm a Ubuntu (and Linux in general) newbie, so... I have a Ubuntu 18.04 installation with the latest NVidia proprietary driver (version 415) installed, but the brightness slider just affects the ...
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Unresponsive function keys in unity ubuntu 18

After installing ubuntu 18 I installed and uninstalled many desktop environments, ending up to Unity which I like the most. However the only problem is that whenever I use the function keys to ...
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Brightness fn keys not working new HP gaming laptop

I know This has been asked to death. I have dealt with it before on other laptops. And I have tried al these combinations in /et/default/grub and run a sudo update-grub reboot, test, fail. ...
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Something is bad with colors (only in Ubuntu 18.04)

I have a problem with colors on one of my displays. It's BenQ GW2470. I can't see things like shadows or thin lines etc. On the second monitor, I can see proper colors. The weird thing is that this ...
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Volume control & Brightness control not working: Ubuntu 18.04.1

I've just installed ubuntu 18.04.1 and my volume & brightness controls from keyboard are not working. OS: Ubuntu 18.04.1 LTS x86_64 Kernel: 4.15.0-38-generic bash 4.4.19 WM: GNOME Shell ...
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15 views

Full-screen Applications increase screen brightness to maximum

I am running Ubuntu 18.04 on a Lenovo Thinkpad (LED screen) and can adjust the screen brightness without any issues. However, when watching videos, e.g. on VLC media player or Totem Movie Player, I ...
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Nothing related to my laptop screen works, such as brightness (despite normal display)

I discovered that this folder was empty as I searched for a solution for my screen brightness issue (even after reinstalling Ubuntu). For example, Night Light runs, however my laptop screen simply ...
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How do I disable LED lights on Dell Latitude D620? (power, hard drive, battery, wifi) [closed]

(Summary: How do I disable lights on the laptop hinge showing power, WiFi, etc. activity?) On the Dell Latitude D620 laptop hinge, below and next to the screen, above the keyboard, on the right hand ...
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My brightness key is not working after a few days of installation

So I just install Ubuntu 18.10 a few days ago on my laptop(Dell Inspiron 14 7000). On the first day, the increase brightness key(F12) is working normally. However, after a few days of use, the key ...
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Brightness Issue - Sony Vaio E [ VPCEH38FN] series - Nvdia driver - Ubuntu 18.04

Have recently installed Ubuntu 18.04 in Sony Vaio - VPCEH38FN laptop. Despite incresing/decreasing the brightness slider / using the fn keys to control brightness it is always very high & does not ...
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Brightness problem on Ubuntu 18.04 LTS

I have read this question - Brightness problem on Ubuntu 18.04 and this is my set up - Linux gansub-OptiPlex-7050 4.15.0-38-generic #41-Ubuntu SMP Wed Oct 10 10:59:38 UTC 2018 x86_64 x86_64 x86_64 ...
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Unable to change brightness of Thinkpad X1 Extreme 4K using function keys

I disabled Secure Boot in BIOS and reinstalled Ubuntu 18.10. I followed the steps described in the following link to modify the grub. However, after executing sudo update-grub and rebooted the system, ...
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2answers
29 views

Cannot set the screen brightness via PCI

I was trying to use xbacklight to set my monitor brightness under the i3-wm. But nothing was happening after typing: xbacklight -dec 10 To investigate I tried to set the brightness via the PCI bus ...
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Brightness function keys do not correspond well with brightness of the Thinkpad screen

I followed the procedure described in the below link to make the brightness function keys work on my Thinkpad X1 Extreme with Ubuntu 18.10 installed, however brightness does not correspond to the key ...
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Can’t change brightness of Thinkpad X1 Extreme 4K in Ubuntu 18.10

I went to Nvidia website to update the driver for Nvidia 1050 Ti. I can use the function keys to change the volume but I cannot use those F5 and F6 keys to change the brightness. Could you please let ...
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Screen brightness does not persist after restart

Unable to set screen brightness to be persistent. Have followed the steps here: link But instead removed the content from sys/class/backlight. Will this removal cause any issues? Running Ubuntu 16.04
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Ubuntu 18.04 on Dell XPS 15 9560: Stopped remembering the brightness settings on reboot

Does anyone know how to make Ubuntu remember the brightness settings on reboot? I generally use my computer in the dimmest setting, when I reboot it, it turns back to brightest.
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1answer
47 views

Unable to lower brightness in lenovo legion y530

I have tried various methods found on the internet, including xbacklight . The main issue is I have no folder inside /sys/class/backlight. Usually others happnened to have a folder like ...
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I can't turn off asus keyborad backlight. No `/sys/class/leds/asus::kbd_backlight` dir

blurhy@blurhy-FX503VD:/sys/class/leds$ ls asus-wireless::airplane input15::kana input4::capslock phy0-led input15::capslock input15::numlock input4::numlock input15::compose ...
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2answers
31 views

How to adjust brightness without adjusting the hardware brightness

Since my laptop LCD comes with PWM brightness controller, I would like to minimize the effect of flicker. Therefore, I would like to know if there is any software or package allows me to adjust the ...
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Laptop screen goes blank on reducing brightness

Immediately when I reduce brightness, the screen goes blank. The screen also goes blank when I plug out and plug back in the AC adapter. Only the screen goes blank, the laptop is on. And it is not ...
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1answer
116 views

Computer goes into sleep mode, but won't wake up

I just installed a fresh version of Ubuntu 18.04 Desktop. Since then, when my computer goes to sleep/hibernate it does not wake up. 5 min. I have tried changing the sleep time to never, but it ...
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26 views

How to decrease brightness below minimum while maintaining 'night light' filter? xrandr shuts it off

xrandr --output eDP1 --brightness .3 The above command does decrease brightness, but the Ubuntu 18.04 night light shuts off along with it. How can I overcome this? Thanks
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Mapping XKB to custom shell command

I'm running a crouton Gnome instance on a Pixelbook, and my brightness keys don't work in gnome. I have no /etc/default/grub file to speak of, so all those options aren't available to me. I'm thinking ...
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How to make a fading of brightness with more than one external screen? Ubuntu 14.04

I have been an user of fading softwares, such as xbacklight or so, which work perfectly on a laptop and/or with one external screen. I have also used scripts that go to change the brightness value in ...
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20 views

No backlight/brightness control

This issue is really starting to get to me. I try some things, they dont work, I forget about it, come back to it, yada yada. I get the iMac is dated but the NIC goes into monitor mode and the ...
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1answer
160 views

IIO sensor Proxy service hangs on shutdown

A week back on a shutdown I got this error. And after that my brightness keys don't work anymore. Also I seem to get some random seconds long freezes every now and then since this. But I'm not sure if ...
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Brightness only goes to maximum when having booted with the power cable plugged in (Ubuntu 16.04; Samsung NP470R5E)

When my Samsung NP470R5E Laptop is booted when the power cable is plugged in, the screen brightness starts out at the maximum. This behavior continues when I unplug the power cable and run it on ...
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1answer
173 views

Cannot change keyboard backlight with dbus-send

I have kde desktop environment, and Fn + F3 / F4 buttons cannot change keyboard brightness. I also assign other keys to increase or decrease keyboard brightness in global shortcuts menu, but its not ...
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188 views

No brightness control and /sys/class/backlight empty in Ubuntu 18.04

No brightness control available in Ubuntu. I tried various kernel boot paramters and none worked. I tried adding /usr/share/X11/xorg.conf.d/20-intel file with intel_backlight - did not work. I have no ...
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1answer
124 views

How to disable the brightness slider in the Gnome 3 aggregate menu?

I have a desktop with a UPS connected to it. In the Gnome menu where I can log off I have another slider below the volume slider which appears to be the brightness slider and it doesn't work nor did I ...
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Brightness bar not working

I am using a desktop with the following specs. Ubuntu 16.04 LTS Intel® Core™ i3-7100U CPU @ 2.40GHz × 4 Intel® HD Graphics 620 (Kaby Lake GT2) My brightness control bar is not working as there is ...
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156 views

CompizConfig Setting Manager color filter doesn't work on Kubuntu 18.04?

I installed CompizConfig Settings Manager on Kubuntu 18.04 and the color filter doesn't seem to work. Another answer advises to search for Opacity, Brightness, Saturation but maybe the answer is ...
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2answers
303 views

How can I disable automatic screen dimming when the wireless mouse has low battery?

Similarly to this question, I find that when a wireless mouse with low battery is plugged into a laptop running Ubuntu 18.04 on battery power, the screen automatically dims after 15 seconds of ...
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Fresh 18.04 install as dual boot - login/shutdown timeouts, brightness controls gone

This is a repost from Reddit. I am facing new woes with my latest distro install - 18.04 LTS on a brand new Dell Vostro, with a W10 dual boot system. This is the relevant technical info: Linux G-...
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53 views

Battery status not shown properly

Recently I upgraded from 16.04 to 18.04 and really happy with it. Wanted to decrease the brightness when running on battery and increase the same when connected to an external power supply. So, I ...
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Automatically adjusting the brightness on battery [duplicate]

Recently I upgraded from 16.04 to 18.04 and really happy with it. I would like to decrease the brightness when running on battery and increase the same when connected to an external power supply. I ...
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54 views

Brightness changes are shown by the indicator but have no effect on the display (Lubuntu, Intel card)

I have tried many of the proposed solutions that I could find on the web, but any of them worked for me. I detail here my problem and some of the things that I tried: Relevant details: TOSHIBA NB200 ...
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93 views

Cannot control brightness on Dell XPS 15 9560 with Ubuntu 16.04 if prime-select nvidia

laptop: Dell XPS 15 9560 OS: Ubuntu 16.04 Graphic: Intel and Nvidia-396.54 When sudo prime-select intel, I CAN control brightness with keyboard and Brightness&Lock program after fixing from ...
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1answer
25 views

Backlight issue ASUS T300 Chi after booting

Introduction I am having trouble with my screen backlight after booting, so when I first enter the login screen. I am running Ubuntu 18.04 bionic. It is a fresh install, fully updated. Probably you ...
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191 views

18.04 - gnome How to disable automatic screen brightness

I 've been searching around on the web about this problem but nothing seems to be working since I cannot see those menu options people are suggesting. The problem is intense when for example I work ...
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0answers
28 views

Ubuntu 18 LTS with Inspiron 7370 auto content brightness probelm

I have dell inspiron 7370 with: Intel(R) UHD Graphics 620 with shared graphic memory. I upgraded to Ubuntu 18 LTS and notice that the brightness of the screen will change brightness automatically ...
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21 views

Screen brightness reset to Max after every restart [duplicate]

Every time my PC Ubuntu 18.04 LTS turn off and then turn it back on the brightness is always set back at the maximum. I like to use lowest brightness for my pc. I've tried using xbacklight set ...
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2answers
1k views

Screen brightness in Ubuntu 18.04

So at first even the brightness key (via Fn button) used to work in Ubuntu 18.04. After an update, i can't even change it from the setting. And with the keys, it just show the icon of the screen ...
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How to set brightness permanently for nVidia VGA on Ubuntu 18.04? [duplicate]

I would like to inquire how to set screen brightness permanently on Ubuntu 18.04? My problem: Values which I applied previously in nvidia-settings are not applied upon reboot, therefore I have to ...
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28 views

no display at installing time

I have a pc in which I am able to use Ubuntu then I buy a laptop and when I try to install ubuntu in my laptop there is a black screen but when I use a flashlight on my laptop screen then I barely ...
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335 views

How to make keyboard backlight controls work in ASUS FX503VM?

Hello Ubuntu community. I've recently purchased the ASUS FX503VM laptop and I've managed to solve most of the "problems" so far in Ubuntu 18.04. The one that is bugging me for a week now is the ...
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Ubuntu 18.04 -Brightness dims when screen is not static

The screen seems to dim slightly when anything on it changes, whether that be a video playing, a window moving, or a cursor blinking. This does not happen when something is playing in the background. ...
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1answer
101 views

Is there a way to adjust brightness for only a single window?

I need to make an app brighte. The app has no brightness adjustment and I would like make it appearance brighter, but I don't want to increase the brightness of the rest of the screen. How can I do ...