Questions related to screen brightness.

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7
votes
6answers
20k views

Screen brightness not working

I use Ubuntu 12.04 on my Sony Vaio(VPCCW2HGX). At the first times, brightness control works well, but after the activating additional drivers(nvidia accelerated graphics driver) brightness control ...
0
votes
1answer
25 views

Question about graphics (absolute newcomer here)

i have an nvidia geforce gt 430 installed, i do have the "proprietary driver" x servers setting thing, but yet everything looks kind of rough, like rough edges and with a LOT of contrast, similar to ...
4
votes
3answers
4k views

Why does Ubuntu reset brightness settings at the loading screen?

Since I first installed Ubuntu 11.10, I noticed that volume and screen brightness get reset every time Ubuntu starts. Why is this so? And what ways are there to keep brightness and volume levels ...
0
votes
0answers
23 views

“monitor brightness down” key resets brightness before lowering it

My monitor brightness down key resets my brightness before lowering it, effectively leaving me at near max brightness. I'm using a Dell XPS 15 laptop with an NVIDIA gpu and I added ...
0
votes
1answer
1k views

When booting ubuntu, it states: thinkpad_acpi: Unsupported brightness interface

As the title says, when I boot my pc to Ubuntu (14.04), it says something like this: [ 23.025150] thinkpad_acpi: Unsupported brightness interface, please contact ibm-acpi-devel@... And this ...
64
votes
15answers
52k views

Brightness is reset to Maximum on every Restart

The brightness of my laptop is reset to Max on every restart. I tried the solution provided at this website but had no luck. ...
0
votes
1answer
334 views

Ubuntu 12.10 w/ Kernel 3.7.0.7 and Open Source Driver RESUME/BRIGHTNESS CONTROL

I am using an Inspiron 7520. I got a AMD Radeon HD 7730m running in switching with an Intel 4000 HD. I have updated my Open source drivers with xorg edgers and x-swat. I am running on the kernel 3.7 ...
7
votes
5answers
10k views

Brightness Controls Not Working on a Dell Inspiron N4010 Laptop

I have a Dell Inspiron N4010 laptop. My brightness hotkeys are not able increase or decrease the brightness of the screen. And as a matter of fact, I also can not reduce the brightness from the ...
0
votes
0answers
20 views

change screen brightness

I've got a strange situation and I'm hoping someone can shed a light on it. I re-installed my dell laptop (and switched from unity to gnome) today and (as expected) dimming my screen didn't work. So I ...
3
votes
3answers
13k views

How to make my screen brightness not change when I plug my laptop in

I do not want my laptop to change brightness when my laptop power is plugged in or unplugged. I set my brightness based on how bright my surroundings are. If I am in a dark room, I set my brightness ...
0
votes
0answers
15 views

Brightness steps twice on one keypress

I am having an issue on my HP Pavilion g7-1350dx laptop. Whenever I press the keyboard's brightness keys, I notice two things: the display brightens by two steps instead of one, and the Unity OSD ...
1
vote
0answers
19 views

latest kernel killed my ThinkPad W520 hotkeys

for some reason after latest kernel/nvidia and other updates on my 12.04.5 LTS running kernel Linux ThinkPad-W520 3.13.0-43-generic #72~precise1-Ubuntu SMP Tue Dec 9 12:14:18 UTC 2014 x86_64 x86_64 ...
0
votes
2answers
53 views

How to set brightness level even lower than default minimum?

I am an ex-Windows user, I noticed that minimum level of screen brightness on ubuntu is way brighter than minimum level on windows when I was using it on the same hardware. I was wondering if I can ...
2
votes
3answers
2k views

14.04 Asus g56jr Fn + Brightness control

I have recently installed Ubuntu on my new Asus G56Jr laptop. I noticed that despite all the other Fn+fX keys are working, the screen brightness does not. I have already tried editing the grub, as ...
0
votes
1answer
104 views

Lenovo G40-45 AMD Driver match for Ubuntu 14.04 LTS

I have Lenovo G40-45 Laptop with specs : AMD A8-6410 Processor Radeon R5 M230 I use Ubuntu Gnome 14.04 LTS for the operating system, overall almost my laptop work properly with Ubuntu, but I ...
3
votes
1answer
1k views

Brightness keyboard buttons do not work on Asus 1225c

I have problem with my new netbook. I installed Ubuntu 12.10 and I can't use my brightness key's (Fn+F5/F6). When i use them OSD appears and indicates the increase or decrease of brightness but ...
0
votes
0answers
137 views

how to install Intel HD 4400 Graphics on Ubuntu 14.10 [closed]

I was wondering how to install Intel HD 4400 Graphics on Ubuntu 14.10 as the Intel Driver Installer doesn't support the distro! I heard this could help to fix the noisy fan/ power consumption issue ...
0
votes
1answer
23 views

Own brightness script, problem with missing ']'

I'm starting my adventure with Ubuntu ( I'm a MS's kid :D) and I would like to create my own scripts for controlling the brightness. I know all about the xbindkeys, and how does it works, but there is ...
5
votes
2answers
712 views

How do I decrease the display brightness an Acer 5830TG?

I am facing a problem with display brightness in ubantu or other versions of linux. Runing a linux distro as live or HDD installation or inside installation, display brightness is automatically set to ...
1
vote
1answer
60 views

Screen brightness Samsung R519 with kubuntu

Kubuntu recognizes the Fn + up/down but it only changes the brightness when it goes from 85% to 71% or viceversa. I want to know an easy way to change the screen brightness. I don't care if the method ...
0
votes
1answer
49 views

Where is the laptop brightness script located?

Online I found the command: echo 1 > /sys/class/backlight/acpi_video0/brightness to set my screen brightness to the lowest possible value, currently I am grepping my entire disk for that path, ...
0
votes
1answer
62 views

ubuntu 14.04 fn brightness nvidia not working samsung r540

here's my system info. ubuntu 14.04 nvidia gt330m when i press Fn + up or Fn + down. It doesnt change monitor's brightness. but on top-right corner brightness indicator moves left and right.
2
votes
3answers
434 views

Sony Vaio VPCEH18FG backlight problem

I have installed Ubuntu 12.04 on Sony Vaio VPCEH18FG but the screen brightness does not change with Fn+F5/F6 keys and /etc/X11/xorg.conf file is also not found. How can I solve this problem?
0
votes
1answer
2k views

Brightness Control Keys on Sony Vaio not working on 12.10

Hi everyone i'm having a problem that for what i have seen its very common with the latest version of ubuntu. So I updated my graphics drivers on my laptop to the latest nvidia ones but now my ...
1
vote
2answers
2k views

Display brightness setting not working in sony vaio SVE151117F

I have sony vaio SVE151117F, ubuntu 12.10.I used to see brightness animation upon pressing Fn+F6,F5 but not actual brightness of screen. I have tried to implement as said in ...
0
votes
4answers
1k 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 ...
1
vote
2answers
3k views

Problem with brightness Sony Vaio NVIDIA graphics

Recently I have installed Ubuntu 11.10 on my laptop (Sony Vaio VPCF22MOE). My graphics card is NVIDIA GeForce GT 540M. After ubuntu installation I installed NVIDIA Driver Version which is 295.33. I ...
1
vote
5answers
6k views

Unable to change brightness on a Toshiba L750

So, as a number of users seem to be experiencing, I am unable to change brightness on my laptop. Using the Brightness and Lock in settings, the slider moves but brightness does not adjust. The fn keys ...
1
vote
4answers
426 views

How to decrease the brightness in Samsung RV509?

I'm using a Samsung RV509 laptop with Ubuntu 12.04 LTS. Can anyone help me to decrease the brightness in my laptop?
2
votes
1answer
1k views

How do I fix the brightness on a Samsung Aura R700 Dillen?

My Problem: Since Ubuntu 10.04 I can no longer adjust the background brightness of the built in LCD-Panel. The Laptop (Samsung Aura R700 Dillen - Nvidia 8600M GT GPU) is always on a very low ...
0
votes
0answers
36 views

Getting Ubuntu to work on Thinkpad E145

tl;dr at the bottom I just bought a brand new Lenovo Thinkpad E145, without any pre-installed OS. I wanted to get an Ubuntu distribution so i can run gnuplot and similar stuff, just things for ...
7
votes
1answer
667 views

Display problem when adjusting brightness in ubuntu 12.04

Recently I installed Ubuntu 12.04 on my Dell 1554 laptop. I was adjusting my screen brightness when this happened : this has become a recurring problem which is really annoying. I also want to ...
0
votes
1answer
5k views

atheros wireless ar9285 driver

I have been having problems with wireless on Ubuntu 10 and above, Mint 11 and above. The problem is in the driver for the wireless... I can see that there is no driver installed and yet it works but ...
0
votes
2answers
3k views

Dell laptop display brightness problem

I am using Dell inspiron 15 and Ubuntu 13.04. I have hot keys on my keyboard to adjust display brightness and they work fine.But the problem is, as soon as I switch on the laptop the brightness is set ...
1
vote
1answer
4k views

Fn keys for Brightness not working on Toshiba Satellite L755

I am running Ubuntu 12.04 and I love it! The only problem is the keys for my brightness, F6 and F7, does not work when I am on battery power or AC power. It randomly works after I am idle for a while ...
38
votes
8answers
49k views

How to change LCD brightness from command line (or via script)?

To work around bug #1005495 (changing LCD brightness via hotkeys impossible), I'd like to have one command line query for increasing and one for reducing the brightness of my LCD. I could then map a ...
1
vote
0answers
17 views

gcm-calibrate without hardware sensor

My monitor won't allow me to set the contrast when using DVI. And ubuntu/gnome won't allow me to set it via software without some fancy color calibration sensor. on system settings > color the ...
0
votes
1answer
312 views

Why can't I reduce the screen luminosity on Toshiba L775?

I've installed Ubuntu on my Toshiba Satellite L775 but the biggest problem is that I can't reduce the screen luminosity, It's too too bright and I almost can't use it at night.
1
vote
0answers
104 views

Keyboard shortcut script not working

I finally gave up on getting my Fn+up/down keys to change my screen brightness on my laptop. I took a brightnessup.sh and brightnessdown.sh script and put them in /etc/acpi and then went to keyboard ...
46
votes
11answers
35k views

Desktop doesn't remember brightness settings after a reboot

Every time I reboot my machine the brightness goes back to 100% in Gnome. I wish it would keep the last setting. Is there anyway?
1
vote
2answers
5k views

No back light on my Acer Aspire 5734z

I installed Ubuntu (12.04) on my Acer Aspire 5734z and the back light stopped working. I have tried the fix by editing the grub file posted on here a couple of days ago but that hasn't fixed it. I ...
13
votes
12answers
52k views

How to control Brightness

I didn't install anything myself, but only Ubuntu 12.04 LTS on an Acer 4741g. I use Fn+left/right to change the brightness, but failed. How can I control the brightness levels?
22
votes
5answers
27k views

How do I set default display brightness?

Is it possible to set the default display brightness so you don't have to re-adjust it everytime you reboot? My laptop display is killing my eyes at the login screen already because it starts at 100% ...
0
votes
1answer
10k views

Unable to adjust brightness in Ubuntu/Xubuntu/Lubuntu13.04

I've recently upgraded to Xubuntu 13.04 and noticed that I'm unable to use the brightness keys to adjust the brightness of my screen. I've tried just about everything this thread suggest and I'm still ...
0
votes
2answers
63 views

Brightness Icon

Before Icon Brightness was appearing Hotkey (FN+Arrow Right) Whenever i wanted to change my brightness the icon appears on right side of Ubuntu. But then it suddenly stopped working, it was changing ...
0
votes
0answers
49 views

How can I get more granular brightness control on Asus X550C laptop

I am quite of a newbie to linux and I like my screen to be as dim as possible most of the time. I have Asus X550C Laptop and I had installed Fedora "heisenbug" on it. The thing was, brightness ...
1
vote
3answers
639 views

How can I stop my Dell Inspiron laptop from dimming the screen when I plug in the AC adapter?

I'm using a Dell Inspiron N5110 laptop with Ubuntu 13 and I find that every time I plug the power in to charge, the screen brightness dims. If I go into the brightness settings window the brightness ...
0
votes
1answer
157 views

brightness control not working in 14.04 (dell inspiron 3537)

brightness control not working when keys are pressed with Fn key. it shows indicator on top right corner increasing & decreasing but nothing happens.
0
votes
1answer
37 views

Ubuntu 12.04 brightness control not working on HP 255

The brightness of my HP 255 is stuck on its brightest level and won't turn down even when I move the cursor back and forward. I tried some of the answers to this on my computer, and now the whole ...
0
votes
2answers
95 views

Changing screen Brightness with a script

As you may know, screen brightness drains battery, that's why it is considered a big problem for laptops (at least for me). I can change the screen brightness but every time ubuntu boots up I will ...