Questions related to screen brightness.

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0
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0answers
60 views

Brightness and Power management

I'm using Ubuntu Gnome 14.04LTS. I want to tweak my Brightness setting to consume long battery life.I want to have 100% brightness when Im on Plug and 50% brightness when Unplug However when I go to ...
2
votes
2answers
6k views

How do i make screen dimming work in ubuntu 12.04 (beta 2)

I recently installed Ubuntu 12.04 (beta 2) on my HP mini 110-4117, but I cant control screen brightness. The Fn + F2 , Fn + F3 keys don't work. System Settings > Brightness and Lock doesn't provide ...
4
votes
8answers
40k views

How do I adjust the screen brightness on an Acer Aspire One D270?

My system specifications are: Ubuntu 12.04, 64-bit, Acer Aspire One D270, Intel Atom CPU The usual brightness increase/decrease key combination using Fn key doesn't work in Ubuntu as many pointed ...
0
votes
2answers
122 views

Brightness Problem

Hello there Linux user I am a new user and I don't know how to turn down my brightness of my laptop when I change it with the keys it show on the screen going down but the screen is not dimming I ...
0
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0answers
85 views

Acer Aspire 4820t brightness fn-keys skip steps

My acer adjusts brightness 3 steps at a time. I've used solutions from: Why does my Thinkpad brightness control skip steps? I've disabled the video driver from adjusting brightness: sudo sh -c 'echo ...
0
votes
2answers
120 views

How to write a script which automatically presses `Fn + F3` button on my keyboard

I am struggling with screen brightness reset issues . It resets to 100% on every reboot. I have tried searching for solutions but none of them worked[including xbacklight ]. Since I can change ...
0
votes
1answer
376 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 ...
7
votes
5answers
3k views

Macbook Pro boots with full screen brightness and keyboard backlight

I have dual-booted my Macbook Pro with Ubuntu 12.04 . Whenever i log-in to Ubuntu, it does so with full screen brightness and keyboard backlight at full . How do i get rid of this? How can i tweak the ...
1
vote
4answers
790 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
4answers
5k views

How do I adjust the brightness on a Toshiba Satellite L750/L755?

Can you please help me ? I tried everything I found and nothing worked. For example, I modified grub configuration file, installed xbacklight and tried setpci command.
1
vote
0answers
58 views

Brightness controls buntu 14.04 / Dell Inspiron

My laptop keyboard brightness controls do not work after the screen has been turned off by the power management - logging of and back on brings back the brightness controls. Similar behaviour occurs ...
9
votes
4answers
11k views

Screen brightness isn't taking effect on a Lenovo Z570

My Lenovo Z570 has two GPU's, nVidia and Intell. Brightness control has no effect what so ever over the screen brightness, and because I've had some major issues in the past when I was trying to ...
3
votes
6answers
23k views

Make xconf configuration permanent

I edited the xconf file, and added this line to device section: Enable brightness control=1 Now I am able to adjust brightness, but after every restart the brightness setting change back to 100%. ...
2
votes
1answer
158 views

Brightness stuck at full after suspend HP Pavilion G6 12.04

I have an ongoing problem with my linux install where brightness seems to get stuck at full after my laptop suspends. Before suspend, the hotkeys work fine. After suspend the hotkeys still bring up ...
0
votes
0answers
60 views

How do I retain screen brightness settings after a reboot on Ubuntu 14.04?

I would like to find a way to get Ubuntu to retain the screen brightness settings on my laptop, so that after I reboot, the brightness will not go back up too 100%. Is there a way to do this? Any and ...
1
vote
1answer
212 views

How to enable notifications while changing brightness and/or volume?

I'm using Ubuntu Gnome 13.10 (Gnome Shell 3.8). When I change the volume or brightness via hotkeys or my volume +/- buttons on my keyboard I do not get the notification in the middle of the screen. ...
0
votes
0answers
76 views

Function buttons not working properly on Ubuntu (HP Sleekbook)

I have a few problems regarding my function buttons, so far the only function button working is the volume, it works fine. But I have some issues with the others. Brightness button doesn't work ...
0
votes
1answer
50 views

Brightness was working but I reinstalled drivers

In the morning only buttons didn't work, now even through the settings. I did few updates today and as a result I had to reinstall drivers. Now I cannot change my brightness in any way.. 14.04 nvidia ...
0
votes
1answer
267 views

Cannot change screen brightness on Ubuntu 14.04 on Lenovo G580

I installed ubuntu 14.04 on Lenovo G580. My screen brightness remains at maximum(hotkeys work). I followed a previous post to modify grub: GRUB_CMDLINE_LINUX="" to this: GRUB_CMDLINE_LINUX="quiet ...
11
votes
1answer
900 views

How to disable KDE's brightness OSD?

I am using lightum to automatically control the screen's brightness depending on the surrounding light (on a Retina MacBook Pro). The problem is, though, that KDE picks up the change and displays the ...
0
votes
0answers
122 views

Brightness wont turn down?

I've had a few operating systems on my laptop in the past couple of months including alot of Ubuntu based ones. One thing Ive had a problem with in all the Ubuntu based systems is that I can't turn ...
0
votes
1answer
367 views

Why is Ubuntu 14.04 running slow on my Asus Zenbook UX302 LG? + brightness issue

It's a fresh install alongside Windows 8.1. I have already tried to modify the grub file by adding acpi=off but it doesn't speed up things. The machine has an i7-4500U processor, 8 GB of RAM and ...
3
votes
3answers
2k views

How to prevent Ubuntu from changing screen brightness?

I have recently installed 12.04 on ASUS-K53SV-V300. I can change the brightness on start-up with: echo 0 > /sys/class/backlight/acpi_video0/brightness >> /etc/rc.local or manually by Fn ...
0
votes
1answer
331 views

Issues on ASUS X550LC (after installing ubuntu)

I've installed ubuntu 14.04 on my ASUS X550LC. Here I've found some issue: Bluetooth is not working. Brightness is going 100% after every reboot. Brightness and network controlling shortcut key is ...
1
vote
0answers
91 views

Apple Cinema LED Display: using regular brightness controls?

I have a Dell Latitude E6430 laptop, running Ubuntu 14.04, connected to a 27" Apple Cinema LED Display (which works fine). By tweaking the appledisplay kernel module a little bit, I can even get ...
12
votes
5answers
11k views

What commands will change my screen's brightness?

I'm trying to re-keybind some of my function keys as I never use them for multimedia purposes, however I'm not sure as to what command I'd need to put it to increase/reduce the brightness, I'm talking ...
0
votes
1answer
111 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
420 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
56 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
58 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
101 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
262 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
131 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
447 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
25k 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
93 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 ...
3
votes
0answers
343 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
2k 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
36 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
349 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
41 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
69 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
270 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 ...