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Questions tagged [brightness]

Questions related to screen brightness.

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Nvidia driver messes up the whole screen on asus rog (gtx 1060)

i bought an asus rog G502V laptop with these system specs i7 7700 hq processor (disabled integrated intel graphic by the manufacturer. nvidia gtx 1060 mobile. 16 Go of ram. I installed ubuntu 18.04....
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20 views

brightness problem on Ubuntu 18.04LTS

I found that when I change brightness, then brightness changes automatically without my willingness. I'm really uncomfortable, so I want you to help me how to solve this problem. And also, I want to ...
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0answers
40 views

I have a brightness problem on Ubuntu(18.04 LTS)

My computer automatically changes the brightness. I don't know why because I'm beginner of Linux itself. The cycle of change is about one minutes. The speed of changes are so fast that my eyes hurt. ...
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16 views

Brightness control stoped working after changing the motherboard from AMD to Intel

After I changed my motherboard from AMD to Intel, my brightness control stop working. I have tried couple of solutions I found on internet but none of them is working. Since none of those solutions ...
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Ubuntu 18.04 LTS on Acer Aspire 5742 Brightness does not change

I have Ubuntu 18.0 on Acer Aspire 5742. The brightness does not change using controls or by scroll bar given in settings. I have tried the solutions provided in the following links but they do not ...
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20 views

Can't change my brightness

I recently got my motherboard changed from AMD to Intel, everything works fine but my brightness doesn't change. I have tried couple of solution from internet but it doesn't seems to work.
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12 views

How to adjust screen backlight at full disk decryption step

I have a MacBook Pro 11,1 on which I dual-boot Ubuntu 18.04 with full-disk encryption. When prompted to enter my password at the decryption step the screen backlight is turned almost all the way down, ...
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1answer
35 views

Brightness control problem Ubuntu 18.04

Recently yesterday at Friday, I got to try my laptop to run Linux and it worked. The brightness was controllable until I tried to reboot it. After rebooting, somehow during the start up I tried ...
2
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1answer
85 views

how to disable automatic brightness adjust Ubuntu 18.04

How to disable automatic disable brightness adjust in Ubuntu 18.04. I only found the solution for Ubuntu 16 or below which just turn it off in settings. But In Ubuntu 18.04 I can't found and settings ...
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1answer
134 views

Gave up waiting for root file system device, in Ubuntu 18.04

I have installed Ubuntu 18.04 on my Dell XPS 15 laptop. I was working fine until yesterday. After a system update, I cannot log in to Ubuntu using normal mode. This is the error I am getting: Gave ...
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0answers
16 views

Dell Latitude 5480 brightness

After formatting and installed Ubuntu 18.4, on reboot, screen brightness was locked in the minimum even BIOS brightness control showing it in maximum. Also, the brightness control in BIOS not work. ...
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44 views

ubuntu 18.04 brightness only works with “nomodeset”

My environment: GTX 1070 Ubuntu 18.04 Nouveau + Mesa 18.2.2 Problem: The brightness controls does not work unless I pass the "nomodeset" kernel parameter. However that also gets rid of the DRM ...
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58 views

HP Backlight keys not working in 18.04

I installed 18.04 on a HP laptop, and at first the backlight keys were working fine, then I installed the Cinnamon Desktop environment and thereby also the lightdm display manager. Since I didn't ...
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0answers
86 views

18.04 Lenovo ideapad backlight

I've spent many hours trying to find a solution but nothing seems to work. I've successfully installed Ubuntu 18.04 on Lenovo G505S laptop in UEFI mode with just nomodeset flag added to grub. ...
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2answers
167 views

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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0answers
16 views

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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0answers
41 views

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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0answers
57 views

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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0answers
29 views

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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0answers
30 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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0answers
40 views

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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0answers
36 views

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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0answers
46 views

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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0answers
141 views

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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0answers
160 views

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
43 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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0answers
107 views

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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1answer
312 views

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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0answers
17 views

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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0answers
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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.
0
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1answer
125 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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0answers
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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
35 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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0answers
16 views

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
249 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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0answers
31 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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0answers
14 views

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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0answers
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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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0answers
25 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 ...
5
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1answer
394 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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0answers
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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 ...
1
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1answer
239 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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0answers
297 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 ...
3
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1answer
164 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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0answers
13 views

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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0answers
245 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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3answers
595 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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0answers
36 views

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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0answers
57 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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0answers
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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 ...