Questions related to screen brightness.

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0
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2answers
204 views

Brightness problem with ubuntu 15.10 and z500 lenovo laptops

Hi and thanks for ur attention. For z500 lenvo laptop there is a problem with brightness key on windows 8.1 and windows 10; and each one has their own solution. Currently I have windows 10 and for ...
7
votes
8answers
43k views

how to adjust screen brightness in ubuntu 14.04?

I'm new to Ubuntu, I am unable to alter the screen brightness in my laptop, it is always 100%. Laptop is Acer Aspire 5740, Graphics/Chipset/VGA all are by Intel. The Laptop has a keyboard shortcut, ...
0
votes
1answer
3k views

Fn keys can't adjust brightness MATE desktop

I just installed Ubuntu 14.04 and removed Unity and installed MATE. Now, the Fn keys on my keyboard can't adjust brightness. Here's the thing that makes it extra extr confusing: my brightness worked ...
0
votes
1answer
59 views

Please I am new to ubuntu 14.04 and i can't adjust my screen brightness

Please I am new to ubuntu 14.04 and i can't adjust my screen brightness. I'm using HP Pro book-450-G2. but i dual boot the ubuntu with windows 10 and my brightness can be adjusted in windows 10.
0
votes
0answers
71 views

Brightness function key : very slow response

I'm running ubuntu 14.04 on my Asus K55VD. brightness low function key is responding very late : aprox 30-45 seconds later the brightness is reduced. but rest of the others functions(Brightness Up ,...
1
vote
3answers
3k views

Ubuntu 14.04 brightness problem (Lenovo Z500)

My brightness controls weren't working before but I didn't really care, but somehow I lowered my screen brightness while downloading league through playonlinux. Now the brightness controls aren't ...
0
votes
0answers
181 views

brightness indicator doesn't change backlight brightness (15.10, Cinnamon, Nvidia GeForce GTX 970M)

the problem My laptop's brightness adjustment keys affect the brightness indicator, but do not affect the real brightness of the monitor's backlight. related facts My Ubuntu version is 15.10. My ...
0
votes
0answers
26 views

Ubuntu dimming even after brightness dimming disabled

^ I unchecked "Dim screen to save power" and my System 76 Gallago Ultra Pro with Ubuntu 14.04 installed continues to dim after about 30 seconds (less than a minute). It is really annoying while ...
2
votes
2answers
642 views

Toshiba Satellite L645D screen brightness does not work on Ubuntu 12.04

I've installed Ubuntu 12.04 on my Toshiba Satellite L645D and the screen brightness does not work. Any suggestions?
0
votes
0answers
128 views

Having problems adjusting brightness in Ubuntu 15.10

I've installed Ubuntu 15.10 on my new MSI GP62 6QE laptop. I was having issues with Ubuntu 14.04 due to the Intel Wireless 3165 so I chose Ubuntu 15.10 instead since it comes with the Linux 4.2 kernel....
0
votes
1answer
100 views

Screen brightness (neither fn button or system settings/ brightness and lock do not work)

I can't change the brightness with fn button or through System settings/ brightness & lock.What should i do? my laptop model is Dell Intel® Core™ i3-4005U CPU @ 1.70GHz × 4 (64-bit) and for ...
1
vote
1answer
51 views

Display still reset to minimum after restarting in ubuntu 14.04

I already follow these instructions provided in Ubuntu StackExchange and display is still reset to minimum after restarting. 1- cat /sys/class/backlight/acpi_videoX/brightness gksu gedit /etc/init/...
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votes
0answers
30 views

Some partitions don't appear

When I uselsblk on terminal, this is the output NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 298,1G 0 disk ├─sda1 8:1 0 1K 0 part ├─sda2 8:2 0 143,1G 0 part / ├─...
0
votes
1answer
62 views

Turning the brightness completely down

I used to run the command xbacklight -set 0 to make my brightness effectively 0 i.e. it was almost impossible to see anything, which was really helpful for conserving my battery power. However having ...
0
votes
0answers
27 views

How can I control the lighting screen in Lubuntu 14.04 LTS

I have tried to manually reduce the scan from my computer, but it is still too strong. I have Lubuntu 14.04 LTS. The model of my computer is HP.
0
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0answers
22 views

double brightness indicator ubuntu

I have double brightness indicator in ubuntu system tray. How can I fix it? I am using Ubuntu 14.04.3 LTS with KDE
0
votes
1answer
144 views

Installed Nvidia Drivers, but can't adjust brightness in the Settings

I recently dual booted Ubuntu 14.04 and installed the drivers for my GPU (Nvidia GTX 960). For some reason, I am unable to control the brightness using the slider in the Brightness & Lock settings....
1
vote
1answer
58 views

Fn + left arrow shortcut activates screen settings

I'm running Ubuntu studio 15.10 (xfce). I have problem with keyboard shortcut for decreasing screen brightness Fn + left arrow. It is working but additionally it activates screen settings. How can I ...
0
votes
0answers
39 views

How do I switch off the backlit of the keyboard when the screen lock automatically?

I have a apollo laptop (https://www.entroware.com/store/apollo), which comes with backlit keyboard. The keyboard is properly lit up, and I can choose between three levels of intensity (off, medium, ...
0
votes
1answer
42 views

must boot under rEFInd sub option vmlinuz

So I was having issues controlling brightness on my recent install of Ubuntu 15.1 on my MacBook pro and rashly followed the directions here : Brightness controls doesn't work on a MacBook Pro 5.5 ...
0
votes
0answers
135 views

Asus x751lb ubuntu (gnome) 15.10 function key for brightness not working

I've tried like all the options for changing grub settings, some even screwed changing brightness at all, some allowed me to use even fn + enter to open calculator, but fn + f5/ fn + f6 nothing... ...
1
vote
1answer
185 views

Brightness indicator in the panel icon missing

As you can see the box icon with stop After a normal update I met with this. During updates I saw something related to brightness indicator, but I don't know about the update.
3
votes
1answer
1k views

How can I get a command to run before login (ie while booting or just after)?

I have an encrypted home folder, so I can't log in automatically (and I wouldn't want to) but also my display defaults to the minimum brightness at each boot. To fix this I run the command `...
1
vote
1answer
26 views

How can I dim my monitor?

On windows, I had an application called dimmer. I used it on my desktop monitor to make the brightness more manageable. I want an equivalent for Ubuntu. I tried xbacklight to no avail.
0
votes
0answers
26 views

Unable to control brightness on Xfce environment

I installed a normal Ubuntu and installed Xfce4 on it. (Not Xubuntu!) The brightness control worked beautifully on Unity Desktop Envionment after I install the AMD Catalyst driver, but not on Xfce ...
0
votes
1answer
369 views

14.04 LTS on Toshiba Satellite C75D-B. Brightness, WiFi, Fn-keys control and Suspend problems

This is a new laptop that I just bought. Came with Windows 8.1, now is a dual-boot. Sound Controls and Mute work with F9, F10, F11 like they do in Windows, but F12 for WiFi, F2 and F3 for brightness ...
1
vote
1answer
65 views

Brightness level resets itself back to full brightness after every reboot

I can easily adjust the level of brightness with the function keys while I'm actively working in the OS, but it resets itself back to full brightness after every reboot which, of course, is something ...
0
votes
1answer
73 views

Adjust screen backlight on ancient HP, with Lubuntu 15.10

I've installed Lubuntu 15.10 on my HP nx9005 (circa 2001), and all works great except that I can find no way to adjust the backlight brightness. I've had a look at various solutions, here and ...
1
vote
0answers
24 views

My brightness key is lagging severely and sometimes doesn't work at all on 14.04 LTS (HP Stream 11)

This is what happens when I try to lower the brightness - https://www.youtube.com/watch?v=z5HEVHx7roQ. When I start up my laptop, it dims the brightness and I can't see some of the screen with the ...
0
votes
0answers
29 views

Brightness doesn't go to zero anymore

After a relatively recent update on Ubuntu 14.04.3, the lowest my brightness will go is: Before this update, I was able to turn it completely to zero (effectively turning off the backlight entirely ...
1
vote
0answers
1k views

Can't disable backlit keyboard on Sony Viao, Ubuntu 13.04, 64bit

I need to turn off the backlit keyboard on my Sony Viao, with 64 bit Ubuntu 13.04. I'm prone to migraines, and the lights really bother my eyes. I've ried several posted solutions, none work. (...
1
vote
0answers
12 views

Is there a way to tie the brightness levels of each monitor together?

I have two monitors, one external, one part of my laptop. In order to set the brightness on my external monitor I have to use this answer. But I really just want to be able to hit the button on my ...
0
votes
0answers
83 views

Brightnes fn keys move brightness bar, don't change brightness level

I have an Asus laptop with an AMD processor. In the live cd, the brightness fn keys worked perfectly. However, I activated the additional drivers for fglrx-updates and 'processor microcode for AMD ...
0
votes
2answers
519 views

Cannot change brightness on Samsung rv411 laptop computer

I am using a Samsung RV411 s03 laptop computer. I have tried several linux distribution on my laptop computer; I have got a problem with them which is the brightness of the monitor cannot be changed ...
0
votes
1answer
163 views

Shortcut keys on Acer CB3-111-670 Chromebook running Ubuntu 15.10 not working

I have Ubuntu 15.10 running on the internal SSD of a Acer CB3-111-670 Chromebook. After some running around to fix the audio, the last thing (that I can tell) doesn't work is the shortcut keys (volume ...
2
votes
4answers
6k views

Brightness control in Ubuntu 14.04 on Sony Vaio?

I recently installed Ubuntu 14.04 LTS on my Sony Vaio [nVidia GeForce 410M/PCIe/SSE2]. Earlier I had 12.04 installed on it, then I edited the xorg.conf file to control brightness using the function ...
0
votes
1answer
393 views

15.10 Brightness adjustment

I have a 2015 Thinkpad X1 Carbon that I just installed Ubuntu 15.10 on. I have noticed that there is a huge jump between the minimum screen brightness, where the backlight is completely off, to the ...
1
vote
1answer
236 views

Unable to change brightness in a Lenovo z500 laptop with Ubuntu 15.10

Brightness adjustment keys have no effect (although they are recognized by the environment), and I can't change the brightness using GUI tools as well. In Windows 10 i had the same problem and after ...
0
votes
1answer
31 views

Laptop screen brightness change seems to affect color, not backlight

I have a problem with my laptop (Acer Aspire 5750G), I can't change the screen brightness. I noticed that the only application with which I was able to change the brightness of my laptop screen is ...
4
votes
1answer
11k views

How to use xbacklight with brightness keys in a VAIO

I have a Sony VAIO VPCCW15FL, with Ubuntu 12.04 installed. Sadly, the brightness keys do not work out of the box, although the brightness meter reacts to the brightness up/down keypresses. Yesterday,...
0
votes
2answers
381 views

Asus X554LA fn+brightness problem

I'm new to ubuntu and my Asus X555LA brought me here. The fn + (brightness up/brightness down) is not working, i did some search and what i tried till now is modifying grub file from etc\default ...
0
votes
0answers
18 views

Ubuntu 14.04 LTS brightness not changing

I get a migraine if there is too much brightness and I've been searching the forums a lot and have not found a solution so far that worked for me and that is why I am posting this question. Please ...
1
vote
0answers
22 views

How to set brightness to my Last set level?

I have read a lot of Q&A to set brightness to a fixed level on startup. But that is not what I want. I want that script (/etc/rc.local ) to update itself dynamically. i.e, On every startup ...
0
votes
0answers
10 views

Ubuntu 14.04.03 Screen dims when I plug in headset and system starts dimmed

Maybe these two are connected, so I made one question. My laptop is Dell 3542 (Inspiron 15 3000 Series) with Intel Pentium, 4GB RAM, kernel is 3.19.0-43-generic #49~14.04.1-Ubuntu SMP. When this ...
3
votes
4answers
1k views

Laptop brightness does not change

I have just installed Ubuntu 13.10 and am trying to adjust my laptop screen brightness. My laptop Dell studio 1558 has a key to change the screen brightness; however, when I reduced brightness to zero ...
1
vote
0answers
638 views

Ubuntu 15.10(wily) Brightness control not working

The brightness buttons and the brightness control in system settings in Ubuntu 15.10 have suddenly stopped working. They were working fine at first(after I upgraded from 15.04). I have no Xorg.conf ...
1
vote
1answer
87 views

Custom command - one less than current brightness level

I tried using xbacklight, but it wasnt working so I made some custom global commands to control the brightness. For example: "Bright" : sudo bash -c "echo 20 > /sys/class/backlight/acpi_video0/...
0
votes
1answer
101 views

Raise and lower screen brightness (both from menu and from keyboard)

I'm working on an Acer Aspire E15 with Ubuntu Studio 14.04 installed in dual-boot with Windows 8.1, and from Ubuntu I'm not able to modify the screen brightness, for two reasons. The first is that I ...
6
votes
2answers
2k views

2 folders in Sys/Class/Backlight?

ISSUE: Backlight brightness does not change. More Detail: Brightness will not change, using both 'System Settings->Screen', or Fn keys (Brightness bar shows and moves, but screen brightness does not ...
1
vote
0answers
102 views

Hotkeys and slider for brightness don't work

I have an Intel processor with no graphics and Nvidia GTX980M with Nvidia driver. I just installed Ubuntu Gnome 15.10 and everything works fine except for the brightness controls. Changing both from ...