Questions related to screen brightness.

learn more… | top users | synonyms

5
votes
1answer
840 views

How to increase the screen brightness control sensitivity?

In Ubuntu 13.04, when I use the keyboard hotkeys to control my screen brightness, I only get 5 steps to go from the darkest to the brightest level, for a total of 6 levels. However, I noticed a ...
5
votes
1answer
207 views

Brightness resets to zero on an HP dm4 Pavilion

Everytime I reboot my HP dm4 Pavillion the brightness is zero on my screen. BTW I use a Ubuntu 12.04..
4
votes
1answer
2k views

Specific function keys not working

My Toshiba C800 laptop (12.04 LTS desktop) has special function keys as follows: fn + : F2 -> BRIGHTNESS DOWN F3 -> BRIGHTNESS UP F4 -> DISPLAY SELECT F5 -> TOUCH PAD on/off F6 -> PREVIOUS ...
3
votes
1answer
86 views

Brightness is reset to Maximum on every Restart in Ubuntu 13.10

I have upgraded from 13.04 to 13.10. After every reboot the brightness is set to maximum. Is there any solution?
3
votes
1answer
955 views

I can't modify the screen brightness on Xubuntu 13.10

I got this problem with brightness on my fresh xubuntu 13.10 install.. It ain't inc/decrease the screen brightness when pressing Fn+F5/F6 !! I've tried some solutions like setting these values in ...
3
votes
1answer
125 views

Dim inactive compiz ( set speed of the effect)

I just enabled the dim inactive effect in compiz on ubuntu 13.04 and my question is: How can I speed up this effect? With this I mean how can I reduce the time it takes to make the background less ...
2
votes
1answer
958 views

Ubuntu 14.04 Brightness issue with nvidia Quadro

I recently upgraded from Ubuntu 13.10 to 14.04. Everything is fine, except the brightness of my laptop screen. When I change the brightness the screen simply does not respond. I figured this was a ...
2
votes
1answer
64 views

Adjusting default brightness upon boot

When I boot to ubuntu 12.04, the back light on my display turns off and I have to press the increase brightness button 4 times to get it to the desired brightness. Is there a terminal command I can ...
2
votes
1answer
83 views

Xubuntu 13.10: Only four levels of brightness?

Why do I have only four levels of brightness on my Dell Inspiron laptop, selectable by Fn+ArrowDown/Up? In Linux Mint Mate, I have 7 or 8, and so I have under Windows, on the same machine? This is ...
2
votes
1answer
1k views

Auto-change in brightness after reboot Ubuntu 13.10

I have noticed that after I set the brightness (High to Low) in Ubuntu 13.10 and then after when I do my work. After rebooting up the PC, the brightness again turns to High. I'm literally tired of ...
2
votes
1answer
242 views

How can I enable brightness control on my iMac 11,3?

I have Apple iMac 11,3 (27" LED, purchased in 2011) with a Radeon HD 5750 graphics card. When I installed Ubuntu 12.04 LTS, everything works fine except brightness control. I want to mention that I ...
2
votes
1answer
529 views

Toshiba Satellite L645D screen brightness does not work onUbuntu 12.04

I've installed Ubuntu 12.04 on my Toshiba Satellite L645D and the screen brightness does not work, any suggestions??? please help!!
2
votes
1answer
2k views

How do I get brightness controls working properly on an Eee PC 1001P?

Is there a solution to the low screen brightness issue with the Eee PC 1001P and release 12.04? When I use the brightness control, the screen goes through three adjustment cycles of dark to semi ...
2
votes
1answer
736 views

Screen brightness in Ubuntu not working

Hardware: HP DVD6t, AMD Radeon 6700 OS: Natty 32-bit. I have researched a lot on this and basically most of the solutions that are on the internet / stackexchange revolves around the brightness ...
1
vote
1answer
32 views

What to choose as application to launch Brightness-Controller?

I'm new in *ubuntu. I'm using lubuntu 14.04. When I'm trying to download Brightness Controller it is saying This link needs to be open with an application. Which application to choose? Actually ...
1
vote
1answer
200 views

Brightness keys no longer work

My Fn+F8 and Fn+F9 keys to change the screen's brightness appear to no longer work on my Thinkpad laptop. # ls /sys/class/backlight/ thinkpad_screen Some guide told me to make this: # cat ...
1
vote
1answer
310 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 ...
1
vote
1answer
81 views

Change the default screen brighthness

Hi im using Xubuntu 14.04 with linux 3.13.0-24 every time my screen goes dark ( activating the screen saver or so ) my current screen brightness is set to some default value how can I change ...
0
votes
0answers
117 views

Screen brightness control doesn't work after update

I just installed Xubuntu 12.04 on my Toshiba Satellite laptop. Out of the box, everything worked fine. I could change the screen brightness with the fn keys, and it changed automatically when ...
0
votes
0answers
581 views

Ubuntu Brightness Not Working

I am using 12.04 in my dell inspiron 3521.It has got AMD radeon 7600 and intel graphics.Brightness control was working perfectly. After wiping the pre installed 12.04,I installed new 12.04 ...
0
votes
0answers
40 views

Screen brightness is reset to minimum after power source change

On any power source change (AC > BAT or BAT > AC), the screen brightness goes to minimum. i noticed this problem since upgrade to saucy Is there a way to fix it ? or even better,set a screen ...
0
votes
0answers
403 views

Can't turn off backlight/display - 13.10 / iMac

I can find no way to completely turn off the display on a late 2013 iMac running 13.10 (Saucy). In the power management settings, I configured the display to "turn off" after one minute to see what ...
0
votes
0answers
467 views

Automatic Screen Brightnes

i know this question have been asked many times but i really cant get it to work. I just installed Ubuntu 13.10 on my Lenovo G580 laptop and i'm trying to manage screen brightness when on battery or ...
0
votes
0answers
171 views

Backlight brightness issue and USB error message

I have a Acer Aspire v5-551g with dual graphics AMD core A6. When I change the brightness like I make it maximum low, after a reboot or wake the brightness is full again. I have installed AMD's ...
0
votes
0answers
107 views

Problems with Ubuntu 13.04 (wifi and screen brightness) on HP 2000-2b59WM

I use Linux for over 2 years on my desktop computer, so far I never had many problems and it always worked fine for my needs as an engineering student. Going straight to the point, there is no ...
0
votes
0answers
78 views

DSDT seems OK still cannot control brightness?

In windows I can change brightness but in Ubuntu I am not able to. After looking here and there I thought why not get DSDT from windows and compare it with the one in Ubuntu so as to locate any errors ...
0
votes
0answers
50 views

why my monitor is so dark when ubuntu starts?

My problem is that my monitor is very dark when ubuntu starts. I can change it in bright and lock but some time is so dark that i cannot find the mouse arrow. Can somebody tell me a way to setup ...
0
votes
0answers
875 views

Screen brightness and wireless problems on Kubuntu Thinkpad after upgrading to 13.10

Upon upgrading from 13.04 to 13.10, I am no longer able to change the brightness via KDE system settings or the battery monitor widget. Upon editing my /etc/default/grub to ...
0
votes
0answers
150 views

Brightness keys change display settings in Ubuntu 13.04 (HP Pavilion g6)

I have Ubuntu 13.04 installed on my HP Pavilion g6 notebook with AMD Radeon HD 7420G (Catalyst 13.4). When I change brightness (using F2/F3 keys or Brightness & Lock utility in Ubuntu), in ...
0
votes
0answers
170 views

Set default brightness on Lenovo p500

This is a somewhat silly question, and not a major issue, but- by default when I load up Ubuntu on my Lenovo P500, the screen brightness is ALWAYS as it's lowest setting. Now, I type in my password ...
0
votes
0answers
3k views

Lubuntu netbook screen brightness

I can't change my screen brightness. I've looked online and tried all of the potential solutions I could find. I am running Lubuntu on a Samsung NC110 Netbook. When I press "fn + up/down" I get a ...
0
votes
0answers
93 views

How to control screen Brightness Ubuntu 12.04 64bit in iMac 2011

I have installed Ubuntu 12.04 in a 2011 iMac computer. Everything is working properly, but I'm struggling with the control of screen brightness. I have tried several solutions and none of them work. ...
0
votes
0answers
386 views

Trouble Adjusting the Brightness for Sony Vaio (Ubuntu 12.04)

Hi I seemed to run into a problem regarding the lighting for Ubuntu 12.04 on my Sony Vaio (VPC-CW2FGX/B). I used to be able to adjust the brightness when I first installed Ubuntu, but when I installed ...
0
votes
0answers
254 views

brightness controls not working for ubuntu 13.04

screen brightness is diminished for ubuntu 13.04. Started yesterday and using ubuntu brightness settings is not working. Computer also has other operating system and brightness is not affected. Is ...
0
votes
0answers
29 views

Text and windows are flipped when trying to enable display brightness in laptop

I was having problems with the brightness in a laptop (acer aspire v5) with ubuntu 13.04 . Basically I couldn't change the bright. So I searched how to fix that and I found that I have to put this ...
0
votes
0answers
36 views

Gateway M-73 brightness

I can not get my brightness keys to work. The combo FN+up and FN+down are supposed to control the brightness. On a fresh install, they turn the slider down but do not change the brightness. So I added ...
0
votes
0answers
69 views

Dell Inspiron M5110 Dimming Troubleshoot

I've had my Inspiron laptop about 3 years now (still runs windows 7) and have recently been encountering an issue in which the screen auto dims on it's own repeatedly and randomly and can only be ...
0
votes
0answers
825 views

Ubuntu 12.04LTS screen brightness doesn't change : always set to maximum

I have Asus G55 ES71 laptop and I recently installed Ubuntu in it. Whenever I start my laptop, the brightness level is set to maximum by default and it doesn't change. Manually changing it through ...
0
votes
0answers
204 views

How do I enable the brightness keys on a Lenovo y500 750m sli?

has anyone managed to get your brightness keys working in Ubuntu? I'm running 13.04 and the latest stable Nvidia drivers. Thus far I have tried this to no evail: I cannot change the screen brightness. ...
0
votes
0answers
166 views

Lubuntu not automatically reducing screen brightness (AO532h)

I just installed Lubuntu 13.04 on my Acer Aspire One 532h and can't get the screen to automatically dim when the computer is idle. Manual dim works via the keyboard. In the preferences for the Xfce ...
0
votes
0answers
279 views

Brightness minimum level turns backlight off

I have an Acer Aspire S3-391 ultrabook. It's Sandy Bridge i3-2377M CPU with appropriate integrated graphics. 320GB hard drive with 20GB cache SSD. I have Windows installed on the hard drive and Ubuntu ...
0
votes
0answers
408 views

Asus N56VB backlit keyboard

I recently bought an Asus N56VB, which is supposed to ship with a backlit keyboard. However, on startup and when it's dark there is backlit keyboard. When pressing the Fn+F3 or Fn+F4 button ...
0
votes
0answers
124 views

Screen Brightness not working on Dual Graphics

i tried this fix to install ati drivers => How do I get AMD/Intel Hybrid Graphics drivers to work? everythink is excellent without brightness.Brightness control is not working. I tried ...
0
votes
0answers
51 views

Brightness Increases to Maximum Automatically. How to fix it?

Every time I leave my system idle for a few minutes, the brightness increases to maximum, even when I read an article or a book, it turns to maximum in a few mins, I have to then reduce it everytime ...
0
votes
0answers
206 views

Brightness control Ubuntu 13.04 x64 is not working

Brightness control is not working on Ubuntu 13.04 64-bit Monitor: Samsung SA100 LED Processor: Core i5-4570 Video Card: Integrated Graphics Intel HD Graphics
0
votes
0answers
184 views

unable to reduce screen brightness in Sony vaio VPCEH35EN

I am unable to reduce screen brightness of my Sony vaio VPCEH35EN laptop. I am using ubuntu 13.04 along with windows 7 home basic. in windows i can able to reduce but in ubuntu its not possible. ...
0
votes
0answers
86 views

Set brightness in Ubuntu 13.04

When I set brightness to 50% in Ubuntu with xbrightness and restart, my brightness still is 100%. Can anyone suggest a way of making this setting stick?
0
votes
0answers
100 views

Does laptop brightness change on battery (like Windows)?

I've been looking for a new laptop, and lots of reviews of the gaming machines talk of the display dimming when on battery, and being unavoidable. Is this also true for linux/Ubuntu, or is it a ...
0
votes
0answers
106 views

I can't lower brightness on Ubuntu 12.04

I have installed Ubuntu 12.04 to dual boot with windows 8 but the only problem i am experiencing is that i cant lower the brightness setting, when i move the slide to adjust the brightness it doesn't ...
-1
votes
0answers
18 views

Sony Vaio VPCEH2FA E Series Screen brightness problem

I have an Nvidia graphics card and Ubuntu 14.04. I've tried every method posted in forums to solve my brightness problem. Its brightness is always on highest and the brightness meter is of no use, ...