Questions related to screen brightness.

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0
votes
1answer
106 views

How to adjust Screen brightness of Acer Aspire 573z?

I have tried many thing given on internet and also on Ubuntu but nothing works.
0
votes
0answers
375 views

Brightness control issue - /sys/class/backlight empty

My laptop has Intel(R) Core(TM) i5-4200U CPU @ 1.60GHz, 4G RAM, Haswell-ULT Integrated Graphics Controller Only thing unusual is when I installed Ubuntu 14.04 LTS, I edited grub as ...
0
votes
1answer
8k views

How to install Intel Media Accelerator Driver in Ubuntu 12?

I have always been windows user, this is the first time i have switched to anything other than windows. The problem is that the display is very very dark and i know it has nothing to do with my ...
3
votes
6answers
8k views

How can I adjust brightness settings when I am on battery?

I can't find brightness settings that work from battery mode in the Ubuntu 11.10 screen settings. There are some settings from Ubuntu 11.04 in gconf, 90% for AC and 60% for battery, but it doesn't ...
0
votes
0answers
55 views

Ubuntu 14.04 won't boot after trying to fix brightness issue with Intel card

I just installed the latest version of Ubuntu on my laptop with pre-installed windows 8. So it's a dual boot and everything worked just fine. Then I found out that the brightness wouldn't change in ...
0
votes
0answers
49 views

Screen goes blank after less than a minute of locking

I am using Ubuntu 14.0.4 LTS Desktop. I pressed CTRL+ALT+L to lock my screen. The screen did lock. After several 10 seconds, the screen goes blank. I checked on my brightness&lock settings, it ...
0
votes
1answer
99 views

Brightness control issue

Brightness notification control is not working on Ubuntu 14.04. I searched over google if there is any method to fix it but I can't find nothing which is working or reliable. This is what I got from ...
0
votes
1answer
210 views

fn key for setting brightness in ubuntu 14.04 lts is NOT working for Asus X550LD

I am facing the above problem only for Brightness Control. Rest all the Controls with fn key are working. I dont want to create new Shortcuts like CTRL+F5 or CTRL+F6. I want that it should happen with ...
0
votes
0answers
116 views

volume and brightness keys not working: xfce

I recently installed Ubuntu 14.04 and when I was working with Unity, everything was fine but then i switched of xfce and now the keyboard shortcuts for brightness and volume control are not working. ...
0
votes
1answer
1k views

Wireless driver Lenovo Flex 14 Ubuntu 12 Ultrabook

I recently bought a Lenovo Ideapad Flex 14 and the wireless card is not working and there are issues with the brightness when I start the computer. I tried the tips that are already given for the ...
2
votes
1answer
2k views

How to stop automatic brightness change while on battery?

I generally keep screen brightness lowest.While laptop is on battery if I do not use mouse or keyboard for some time (I do not exactly know this time interval, maybe 20 second) brightness increases ...
1
vote
1answer
423 views

Ubuntu 14.04LTS hangs when i change brightness of my display on Dell N5010 laptop

I have dell n5010 my system hang when I try to change brightness of the display and this happen only when my system on battery please help how to solve this problem
15
votes
7answers
24k views

Brightness not working after installing NVIDIA driver

I recently installed Ubuntu 11.10 on my Mac Book Pro 7,1. I installed the NVIDIA driver (285). The brightness keys are working (F1 and F2) and I get the box showing the brightness but it does nothing. ...
0
votes
0answers
83 views

contrast/gamma different than in nvidia-settings

My Ubuntu displays less bright tones (like darker greys) much darker as they should, gamma and/or brightness seem to be messed up. When I start nvidia-settings, the colors instantly change to ...
2
votes
0answers
316 views

Ubuntu 14.04 + Bumblebee, Unable to control Brightness and have Bumblebee working at the same time

I'm current running Ubuntu 14.04 with a GTX 780m gpu on my laptop and using nvidia-331 drivers with bumblebee. I was unable to control the brightness of my screen, but then I decided to follow some ...
2
votes
2answers
2k views

brightness not working on 13.04 upgrade on dell xps 13 ultrabook

Just upgraded from 12.10 to 13.04 on Dell xps13 ultrabook and the display is very dim and cannot be changed using f'n keys or from system settings. This ultrabook uses Intel's ivybridge mobile. ...
1
vote
2answers
1k views

Ubuntu 14.04 brightness keys don't work anymore after dist-upgrade on Thinkpad L430

I just updated my Ubuntu system from 13.10 to 14.04. After having fixed GRUB which broke on upgrading, I run into certain other problems. One of them is that the brightness adjustment keys of my L430 ...
3
votes
5answers
3k views

Lenovo Y500 can't set brightness

I've installed Ubuntu 12.10 on a Lenovo Y500 laptop (2012), video card is Nvidia 650M (no integrated graphics), I'm using driver 310.19. The problem is that I can't adjust brightness at all. If I ...
0
votes
0answers
31 views

Brightness keys +/- do not repeat

On my system, I was obliged to create an /usr/share/X11/xorg.conf.d/20-intel.conf file to use the Intel interface for brightness control with the following content: Section "Device" ...
1
vote
1answer
279 views

fglrx: dim screen until brightness key pressed

I reported this at https://bugs.launchpad.net/ubuntu/+source/fglrx-installer/+bug/1360218 three weeks ago but it is still unassigned and no one has commented on it but myself. It is a Lenovo G50-45 ...
0
votes
0answers
40 views

Ubuntu 12.04 - backlight adjustment

I was trying to look at solutions that would enable me to adjust the backlight intensity using the function buttons. I tried editing the grub file in /etc/default/grub but that didn't help. I ...
0
votes
0answers
59 views

Nouveau driver has low brightness/contrast

Why nouveau looks with less brightness and/or contrast than nvidia proprietary driver? I use Ubuntu 14.04 in a desktop with a Nvidia GeForce GT 640. I had this problem in the past too with other ...
0
votes
2answers
230 views

Brightness Problem

I have a lenovo z570 laptop. I have currently switched to Ubuntu 14.04. I am unable to control the brightness and it is always set to high. Please help. I have searched for the problem but none of ...
1
vote
3answers
2k views

Control brightness of a Sony Vaio vpceg15fx with the hotkeys [closed]

I have a Sony Vaio VPCEG15FX, I have been trying to install Ubuntu, but the same problem occurs with the screen, I am unable to control the Brightness using the laptop Hot keys. Until two days ago I ...
1
vote
1answer
40 views

Screen dims when looking at Dark Screens

I am using Ubuntu 14.04 on a Dell Inspiron 11. It uses Intel's Integrated graphics cards. The problem I'm having is when ever I bring something up on the screen that is dark (such as a terminal ...
10
votes
5answers
7k views

Decrease Backlight Below Minimum

I have this laptop that doesn't handle the backlight very well. In /etc/default/grub, I have added a acpi_backlight=vendor function to get it to work at all. Which is cool, and the backlight now ...
4
votes
3answers
481 views

13.04 Upgrade – Brightness not working

Up until yesterday I was running Ubuntu 12.10 on my Dell Latitude E6530. Recently I played around with the nvidia settings, which caused my brightness control to stop working. However, I could fix it ...
1
vote
1answer
2k views

How to fix Acer Aspire 4736z back light brightness control in Ubuntu 13.04?

A simple way to fix Acer Aspire 4736z back light brightness control problem using hot keys (Fn + Brightness +-)
0
votes
1answer
205 views

MSI GE70 Screen brightness

I've tested pretty much every option I could find online regarding getting to dim my screen brightness which is at max right now, but most solution i've found are controling the brightness through ...
0
votes
0answers
75 views

Control brightness on Satellite Pro C845

I have a Toshiba Satellite Pro C845 con Intel Core i5 and I can use the function keys to mute sound or increase and decrease, but the brightnes keys does not work, to decrease is fn + f2 and to ...
8
votes
9answers
19k views

display brightness problem with ubuntu 13.04

I have a Dell Inspiron 5520 with intel core i7 and AMD Graphics card. It used to work fine with Ubuntu 12.04 and Ubuntu 12.10. Now I tried to install Ubuntu 13.04 but i can't change display ...
1
vote
0answers
104 views

How to disable dynamic contrast in Kubuntu?

My environment is kubuntu 14.04 and graphic card is nvidia GTX 560. The problem is with dynamic contrast changes. For example when I open "bright" webpages it looks like monitor is brightening up as ...
2
votes
7answers
23k views

Can't adjust screen brightness on Ubuntu 12.04LTS

My laptop is Samsung NP-Q430-JS03US. I have searched for the solution. I have tried editing grub acpi_osi=Linux and acpi_backlight=vendor, but still didn't work. Please help.
2
votes
3answers
4k views

Brightness control problem on acer aspire V5

I am running Ubuntu 12.04 LTS on new Acer Aspire V5. There is no other OS installed. I can not control the brightness of the screen using Fn+left and Fn+right keys. I tried to change brightness from ...
1
vote
0answers
74 views

How can I adjust screen brightness on Toshiba C665-X5010?

I am using Toshiba C665-X5010 laptop having NVIDIA GeForce 315M GPU. I have installed Ubuntu 14.04 recently and I couldn't adjust my screen brightness. Please help me.
0
votes
0answers
95 views

Screen Resolution for 14.04 + display lists only 1024x768

I am using Ubuntu 14.04 on dell 1749 laptop, do not know what happened and I am not able to control brightness, and I can not in choose other resolutions than 1024x768. Processor: i3 RAM: 6GB OS ...
0
votes
4answers
212 views

How do I get brightness control working on an HP 655?

please I installed Ubuntu 14.04.1 on my hp 655 alongside windows 8.1 but my brightness control doesn't work although it does work on my windows platform.
0
votes
1answer
87 views

Upgraded from 12.04 to 14.04 and screen brightness can not be decreased

The brightness remains maximum always. I am using ACER Aspire E1-572, and its brightness cannot be changed. I tried: echo -n 100 > /proc/acpi/video/DVGA/LCD/brightness echo -n 100 > ...
0
votes
0answers
39 views

Set Brightness to 0 when lid closes

is there a way of setting the brightness level to 0 or blanking the screen when I close my lid (without suspending the system). I just prefer it that way, since I listen to audiobooks while driving ...
0
votes
1answer
59 views

How to set bright at maximum permanently (I've already got a solution, do anyone have a better one?)

I have to reinstall ubuntu in my Samsung N210 laptop, and now it won't let me set the brightness by hand. This seems to be something related to my BIOS but after looking for it, there's no new release ...
0
votes
1answer
61 views

Brightness change freezes Ubuntu with Noveau and Nvidia drivers [duplicate]

Both Nvidia and Noveau were working fine before my bios update and now they both crash when I change the brightness. Integrated still works fine with brightness and I've tried several Nvidia drivers ...
1
vote
0answers
733 views

Brightness control does not work in Ubuntu 14:04

I have a "Inspirion 15r SE 7520" and the Brightness control doesn't work. Using amd driver, I have already added: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor" to the grub config ...
1
vote
0answers
63 views

I removed Windows 8 and installed Ubuntu 14.04, now my fn keys to manage brightness and volume don't work and I can't boot into BIOS

To clarify, this isn't a dual-boot, I just have Ubuntu now. My FN keys are no longer working on my ASUS K55n, this includes changing my brightness and volume. I've already tried editing the GRUB ...
1
vote
0answers
89 views

Keyboard Backligth is set to Maximum in every reboot

At every reboot my screen backlight and my keyboard backlight were set up to maximum level on every reboot. Reading this article: How do I set default display brightness? i've solved the problem ...
0
votes
0answers
133 views

Ubuntu 14.04 LTS Screen Brightness ASUS G750JS

I got a new ASUS G750JS at the beginning of the summer and set it up for a Windows 8.1 / Ubuntu 14.04 LTS dual boot. Minus discovering that the Windows 8 boot manager is completely broken, I had ...
1
vote
0answers
93 views

Can't adjust screen brightness ((

Can't adjust screen brightness from anywhere. Nor by specific buttons on the laptop keyboard, nor by setting in "brightness and lock" I've tried to configure the grub file like it mentioned in a lot ...
3
votes
1answer
1k views

How to change external monitor brightness via DDC/IC?

I would like to change brightness on my external Dell U2713HM monitor via DDC/IC (DDC Wikipedia), it's connected via DisplayPort. I have the integrated Intel HD4000 graphics. When I run sudo ...
1
vote
0answers
55 views

How to add brightness key to dconf

I recently downloaded Ubuntu 14.04 and did a clean installation. I noticed that Ubuntu 14.04 does not store screen brightness settings. Who can I add a value to dconf to store brightness settings. I ...
1
vote
0answers
13 views

Ubuntu 14.04 Brightness keeps going to 100% [duplicate]

I recently installed Ubuntu 14.04 for the first time. Although I have set brightness a million times, every time I start the computer, it goes to maximum again. If I restart the computer it remembers ...
2
votes
1answer
93 views

Is there a convenient way to change the brightness at night in Ubuntu?

I know the settings menu, but is there some more convenient way (maybe with an addon)?