Questions related to screen brightness.

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0
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1answer
44 views

How to switch the screen illumination off and continue typing? [duplicate]

I can switch the screen illumination manually off by pressing Fn+F6 on my laptop keyboard. This is the same as automatically switching it off on idle as it can be set in the power management. The ...
0
votes
2answers
913 views

How can I change brightness on Asus Zenbook ux305?

fn+F5 and fn+f6 keys do not change the brightness on my Asus Zenbook UX05. Thanks to this website I found that command: xrandr --output eDP1 --brightness 0.5 reduces brightness to 50% of the ...
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0answers
17 views

Prevent OS from setting 0 brightness

I'm using ubuntu 14.04 and on pressing "brightness minus" key, the brightness of the screen does decrease but, if I keel holding/pressing the button,the brightness decreases all the way to zero and ...
0
votes
1answer
102 views

Ubuntu brightness max_level

Notebook is Lenovo IdeaPad Z500. Ubuntu 14.04 LTS with latest updates. When I first time clicked on F12 (which change brightness up by default) light become lower, but not 0 (I see the text, but it's ...
0
votes
1answer
109 views

Disable Dynamic Brightness Dell LCD

I have a Dell Inspiron 11 3000 Series laptop that has built in Dynamic Contrast/Brightness in the screen. The screen automatically adjusts it's brightness according to how many white pixels are on the ...
0
votes
1answer
154 views

is there a command to turn on keyboard lights?

I just updated the BIOS of my friend's Dell Latitude E6420 (from A08 to A22) and found out that the keyboard has a back light! There is a FN+Key which toggles thought the scales of brightness, maybe ...
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0answers
32 views

I no longer have access to the system menu

I was trying to change my brightness and issued a command sudo setpci -s 00:02.0 F4.B=80 Later I installed xbacklight using the following command sudo apt-get install xbacklight Then changing my ...
0
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0answers
23 views

No brigtness control on Toshiba Satellite running ubuntu 14.04 LTS [duplicate]

running ubuntu 14.04 lts on a toshiba satellite I have no control of bightness. How can I fix this?
0
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0answers
191 views

Brightness control not working FN keys ubuntu 14.04/15.10

I have a toshiba laptop C855D-124 with an AMD/ATI, and since i installed the graphic card drivers that i can't adjust the brightness.... the FN key works with the other options, just not the ...
2
votes
0answers
94 views

How to change screen brightness from commandline on Asus X453?

I'm using the Fluxbox window manager on Ubuntu 12.04. I recently got my desktop into a strange situation, and I'm not sure how! The situation was this: If I close the laptop screen lid and then re-...
1
vote
1answer
242 views

Brightness Control : Asus X453MA : Xubuntu 14.04

I cannot adjust the screen brightness using the Fn keys. I have scoured the net to find a solution and so far this is what I have : I've tried creating/editing /usr/share/X11/xorg.conf.d/20-intel....
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0answers
43 views

Problem with backlight

I always have problems with brightness control in my computer,(I have intel graphics HD 400) Until yesterday, I was running ubuntu 15.04 without problem at all. I just have to modify grub with these ...
0
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0answers
38 views

Windows & GRUB Screen not displaying

I have a Windows-Ubuntu dual boot that worked fine till a few days ago. I upgraded to Windows 10 last month & the dual boot worked fine after that. Suddenly, the GRUB screen & Windows OS (when ...
1
vote
0answers
46 views

Screen Brightness not increassing after using "xrandr --output eDP1 1.0

Earlier I was not able to decrease screen brightness from keyboard (It was at its maximum), then I tried: xrandr --output eDP1 --brightness 0.5 Now screen is sufficiently dim now, but now at times ...
0
votes
0answers
16 views

Macbook brightness using WRONG folder

I am running ubuntu 14.04 with macbook pro mid 2012 Brightness is not working using the function keys. I'm pretty new at Linux, but I know why it is not working, just not how to fix it. #Under /...
0
votes
2answers
989 views

I can not increase or decrease the brightness of my screen on UBUNTU 15.10 [duplicate]

just wondering if anybody knows what's the problem. I use the brightness bar control with my keyboard or in options, the computer shows me the brightness bar increasing or decreasing but the screen is ...
2
votes
1answer
41 views

Ubuntu 14.04 brightness preference option

The lighting preference option seems to allow increased lighting adjustment but after re-setting the screen darkens! When I check the setting it has returned to the previous position. Is there a ...
4
votes
1answer
109 views

Can I adjust the minimum brightness for my laptop's LCD?

I'm running Ubuntu Gnome 15.04 on my Dell XPS 13 (9333, 2014 model). The LCD brightness can be controlled by the keyboard, and if possible I'd like to adjust the minimum value and/or adjust the ...
0
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0answers
39 views

Brightness is reduced if booted unplugged,but doesnt regain default if plugged in . increasing brightness never makes look default?

when my laptop boots up,if its not plugged in,then the brightness is much less than default.using the command below I increase (>1) but that doesnt look good. command :: xrandr --output LVDS1 --...
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0answers
23 views

Set monitor backlight to minimum level during ubuntu boot

Is it possible to change the default brightness level during boot to the minimum level available.
-1
votes
1answer
100 views

Ubutnu Screen Flickering after Changing Brightness

I have an Acer Aspire 5742G latop with Ubuntu 12.04.5 LTS. Firstly I had a problem with the brightness (i couldn't change it) but afer I changed GRUB_CMDLINE_LINUX_DEFAULT to ...
0
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0answers
40 views

Possibility to Limit Processor Utilization by %?

This question refers to the feature in Windows Power Settings that has 2 options: Minimum processor utilization: 0% Maximum processor utilization: 100% Since the default Power Options in Ubuntu ...
0
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0answers
126 views

Screen brightness resets when restarting Ubuntu

Every time I start Ubuntu 14.04 the screen brightness resets to default. I would like to keep it at the lowest, yet it keeps changing to highest when I restart. This is a problem that have long ...
0
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0answers
47 views

Why Compiz Fusion doesn't work well since Ubuntu 12.04?

Since Ubuntu 12.04 compiz fusion doesn't work well. I don't know why when i active "Cube Reflection Deformation" my screen turns dark. like this: How do I change the brightness in Compiz? and when i ...
0
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0answers
42 views

My ubuntu not powering off version 14.04 hp laptop

I am having hp laptop. i installed Ubuntu 14.04. The problem is it is not shutting down. i need to press power button to shut down. i tried almost all steps like changing /etc/default/grub, installing ...
0
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0answers
92 views

volume and brightness notifications not working but notify-send do

There is no notification while changing volume and brightness.Volume indicator applet is working fine. notify-send is also working. I think this happened after installing Theme Configuration app(to ...
3
votes
2answers
53 views

Forcing brightness increase

I'm a desktop user, and since my LCD screen died I have to use an old CRT screen that has some issues. I set its both contrast and brightess settings to 100%, but there's some stuff I still couldn't ...
0
votes
1answer
80 views

Brightness not working

There are many answers out there for earlier versions but I did not have this problem before 15.04 and I know too little to judge, but I am guessing when I deduce that this problem is thus linked to ...
3
votes
0answers
241 views

Brightness Ubuntu vs. Kubuntu and Xubuntu

On Kubuntu and Xubuntu the brightness of my monitor goes down to zero (i.e. the backlight got switched off). On Ubuntu this does not happen, the minimux brightness is still with backlight on and ...
1
vote
1answer
40 views

Is there a software way to make the screen more readable?

I have a Lenovo Carbon X1 laptop. Often when it's sunny outside I can barely read the screen, even at the brightest setting. Is there a software tool that has something like a "crazy contrast mode", ...
0
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0answers
93 views

14.04 freezes on Acer Aspire 4810T when adjusting screen brightness with keyboard

System hangs only when using Fn key and left and right arrows to change brightness. Does not hang when using slider in System Settings. Already tried this: Ubuntu 14.04LTS hangs when i change ...
0
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0answers
61 views

How to set custom brightness as default in Ubuntu 14.04 [duplicate]

My problem is whenever I boot the PC Ubuntu is loaded with full brightness... So every time I have to reduce brightness on booting and then start my work... So is there a way to set custom brightness ...
0
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0answers
30 views

Ubuntu 14.04. Samsung Ativ Book 6. Brightness doesn't change [duplicate]

When I change my brightness, the slider moves, the brightness level changes, but actual brightness is the same. I have read a lot of topics about this problem. I tried to change grub, to create /usr/...
11
votes
2answers
234 views

Disable automatic brightness according to content in Ubuntu 14.04

I am running Ubuntu 14.04 LTS on a Dell Latitude E3440 laptop. My problem is that screen brightness automatically changes depending on content. This means that the screen gets brighter when the ...
2
votes
0answers
103 views

Can't change brightness using DDControl with Catalyst driver

I have a Samsung SyncMaster SA100. This monitor doesn't come with buttons to change the brightness, only a power button. The guys at Samsung say that you should change the brightness using a ...
1
vote
0answers
31 views

Why don't remember brightness (U14.04, Samsung Ativ book 9 lite)

Why Ubuntu doesn't remember the screen brightness ? Whenever I turn it on, it always returns to the max, even if I set on settings. Thanks in advance
1
vote
1answer
153 views

Desktop monitor brightness adjusting

Is it possible to adjust desktop monitor brightness like on laptops? Yes all desktop monitors have separate menu for it. But is it possible to change this to something like Winkey+(F1..F12)? ...
0
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0answers
167 views

Brightness will not change on Ideapad p400

I recently installed Ubuntu 14 (can't remember which release) to dual boot with Windows 10 on my Lenovo IdeaPad p400 Touch. It gave me the option to upgrade to 15.04, which I decided to do. After ...
0
votes
0answers
58 views

Hardware brightness control on Asus R556LB

I have an Asus R556LB. All my keys but the brightness control work out of the box on the 4.1.2 kernel. I tried booting the kernel with the following extra options acpi_osi= acpi_backlight=vendor ...
1
vote
1answer
62 views

At login, brightness goes to minimum, fastly goes back to maximum and didn't change anymore

I updated my ubuntu to 15:04 , but after que I can no longer reduce brightness. Even when I try with FN keys, the indicator varies, but the brightness doesn't change. I've tried many ways to change ...
0
votes
1answer
74 views

Why cant I install brightness-controller

I have been having problems with adjusting the brightness.....it is at max (when I look at it, it is at max in the settings. By the way, I cant control it at all with the keyboard combination.) I ...
0
votes
1answer
380 views

backlight trouble xubuntu lenovo ideapad 100

Brightness control is reversed. When I press the brightness control keys the increase button will make it dim and visa versa. The indicator for the brightness on display is also backwards, and before ...
1
vote
0answers
43 views

Event handler even more low-level than acpid?

Ubuntu 14.04 Netboot didn't support my laptop's display brightness controls out of the box. So first thing I did was fire up evtest to check if the correct keycodes (KEY_BRIGHTNESSUP and ...
0
votes
0answers
20 views

Cant disable touchpad

I am using the latest version of ubuntu and cant disable the touchbad using "fn+F9". F9 has the touchpad symbol and it is crossed out so surely that's the right one. Brightness wont change either with ...
1
vote
0answers
59 views

Editing system settings not working

So this happened after I tried to plug an external monitor into a 10,1 Macbook Pro running Ubuntu 14.04 64-bit. I first started playing with nvidia-settings without success and then I tried to ...
0
votes
0answers
63 views

Brightness is set to 0 and I'm not able to change it

I changed my brightness to 0 and kept the laptop running and after few hours battery died and the laptop was turned off. Now whenever I turn on the computer after the splash screen goes dark. If I ...
0
votes
0answers
103 views

ACPI special keys all have the same code

I've ran into the problem of my brightness keys (and everything but my volume keys) not working. I've been following this guide on how to fix them: https://help.ubuntu.com/community/LaptopSpecialKeys ...
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0answers
326 views

Ubuntu 15.04: unknown display & can't change brightness

I have Ubuntu 15.04 on my Toshiba Satellite A500-14H with ATI Mobility Radeon HD 4650. First Problem: When I go to settings - display devices (hardwares), it tells me "Unknown Display". I get the ...
2
votes
2answers
238 views

Is there an App that can make my desktop dimmer

I used an app in Windows 7, I think called dimmer to make the screen change its contrast settings so I could dim it lower than the controls of the PC defaults such as function key or the power options ...
0
votes
1answer
52 views

control brightness on pc

I want to control brightness on pc. There isn't any setting for brightness. I can control brightness on monitor but I want to change it more. Screen is too bright. I also want something that change ...