Questions related to screen brightness.

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Ubuntu hangs after logging back from Logout

I am newbie in the Linux OS and I installed Ubuntu 14.04 along with my window 7 OS. After installation it works perfectly and I am enjoying working on it but there are some issues which is not ...
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1answer
21 views

Brightness change freezes Ubuntu with Noveau and Nvidia drivers

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 ...
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0answers
17 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.
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0answers
24 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 ...
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0answers
19 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 ...
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0answers
29 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 ...
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0answers
21 views

Changing the brightness on the Lenovo T410

I can't change the brightness on my lenovo T410 laptop. I tried changing it from the system settings and using fn+Home, but both didn't work.
0
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0answers
29 views

Function keys not working on Toshiba C-50-B

I purchased a Toshiba C-50-B-P-0010 about a week back, it did not come pre-installed with any OS. I have installed Ubuntu 14.04. The function keys are not responding properly. If i press F3 which is ...
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0answers
32 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 ...
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0answers
33 views

Some issues on ASUS X550LC (dual boot with Ubuntu 14.04 and Windows 8)

I have dual boot (UBUNTU 14.04 and WINDOWS 8) on my ASUS X550LC. Windows is working fine. But I have found some issues when I am running Ubuntu. Bluetooth is not working. Brightness is going 100% ...
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0answers
22 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 ...
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0answers
10 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 ...
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1answer
65 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 ...
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1answer
54 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)?
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0answers
28 views

Ubuntu 14.04 max brightness isn't the max brightness

I am experiencing an issue with the brightness on my laptop (Sony Vaio vpcf21z1e). This issue has been occurring since Ubuntu 12.04. Essentially when my laptop boots into Ubuntu the brightness is set ...
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2answers
33 views

Gamma correction with Upstart and a script

I've written an Upstart job to automatically change display gamma according to change in display brightness: start on (backlight-device-changed) exec /usr/bin/gammach And this is "gammach": ...
-1
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0answers
22 views

Sony Vaio VPCEH2FA E Series Screen brightness problem [on hold]

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, ...
0
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1answer
50 views

Ubuntu refuses to boot with acpi_backlight=vendor

I bought a Dell Inspiron 14 5000 series and dual booted Windows 8.1 and Ubuntu GNOME 14.04. The brightness would not change, so I booted with kernel parameter acpi_backlight=vendor and it worked. I ...
0
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1answer
64 views

Backlight keyboard won't turn on samsung ativbook 6 ubuntu 14.04

So I have recently installed Ubuntu 14.04 and I like it but I can't seem to make the back-light keyboard to work. I have search hours for a solution but I can't find the script: kbd_brightness ...
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2answers
27 views

Startup script for brightness

Not so long ago I replaced XP for Lubuntu 14.04 on a old PC, and it works great. To make it perfect, I want to autoexecute "xrandr --output VGA-1 --gamma 3:3:3 --brightness 1" on startup or boot. ...
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0answers
27 views

Screen brightness is always full [duplicate]

The screen brightness of my laptop is always full when I log in Ubuntu. When I set it low and restarts its again on its maximum. I want it to remember my last choice. How to do this?
2
votes
4answers
257 views

Backlight issues with Asus X551MAV-EB01-B

I've got a fresh install of trusty (xubuntu if that matters, I don't think it should) on a Asus X551MAV-EB01-B. My function keys for brightness don't work. Here's what I know so far: If I pass ...
0
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1answer
19 views

Editing max_brightness

Is it possible to edit the value in /sys/class/brightness/acpi_video0/max_brightness/ ? I've tried: sudo echo 16 > max_brightness from the directory, but I'm getting Permission Denied The current ...
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0answers
44 views

Sony Vaio SVE15113ENB brightness Fn key slider issue -Ubuntu 14.04 LTS

I am using a Sony Vaio SVE15113EN laptop. Recently I installed Ubuntu 14.04 and found out that I am unable to adjust my display brightness slider. The brightness is so high that I am unable to use the ...
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0answers
21 views

Brightness keys registering, but no effect

I have (very) recently installed Ubuntu, and am having some issues with the brightness. I'm using an HP ProBook - the brightness keys are being registered no problem, and when I go into Brightness ...
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0answers
9 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 ...
0
votes
1answer
61 views

Brightness doesn't decrease in Ubuntu 14.04

I've recently installed Ubuntu 14.04 in my Dell Inspiron 5521. I find that brightness is set to a maximum level and Brightness keys doesn't work though they show as if it gets decreased. I searched ...
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2answers
29 views

How to reduce LCD brightness if intel_brightness is unistalled?

tried echo,xrandr and even xbacklight couldn't reduce backlight of my screen. Can anyone suggest any other way?
0
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0answers
39 views

Xubuntu - How do I map the brightness keys to run a script?

I'm pretty new to Linux so bear with me. I have an emachines laptop (ugh) with FN + Left Arr / Right Arr brightness keys. These work perfectly fine in Windows but do not work in Xubuntu. What happens ...
0
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1answer
71 views

Brightness buttons on Macbook Pro 7.1

I'm following the steps here. The website says to set the driver to NVIDIA binary Xorg driver and nvidia-current (not nvidia-current-updates), but I don't see that option. I set the driver to ...
0
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0answers
43 views

Xubuntu (Server Install) screen blanks for 1 second after 1 minute

Little hard to understand the question from the title, but I'll get detailed here. After EXACTLY 60 seconds of init starting and the system booting, the screen will seem to "restart", blanking out for ...
0
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0answers
61 views

How do I get the OSD for brightness hotkeys on Kubuntu 14.04 KDE 4.13?

I am using KDE SC 4.13.2 on Kubuntu 14.04 (64-bit). The screen brightness changes with the brightness hotkeys on my keyboard (Lenovo G500) but the OSD showing the brightness level does not appear. The ...
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1answer
186 views

Ubuntu 14.04 brightness shortcut not working

I'm using Asus A450L: Here are some info: cat /proc/cmdline BOOT_IMAGE=/boot/vmlinuz-3.13.0-30-generic.efi.signed root=UUID=d1cccc17-9e70-4682-bb40-c3df0db22e36 ro quiet splash vt.handoff=7 ...
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votes
0answers
48 views

Can't change brightness after disconnecting second monitor

When I boot up with 2 monitors, or when I connect the second monitor to my laptop, I can change brightness of the laptop screen in the usual sense. After disconnecting the second monitor, when I ...
0
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0answers
33 views

how do I turn off webcam brightness auto-adjust?

My Logitech webcamera adjusts brightness automatically and I don't like it. I wonder how I could turn this feature off from ubuntu. I downloaded v4l2ucp that seems to be a program to do just that, but ...
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2answers
75 views

Brightness wont change

I tried changing the brightness but it won't dim or brighten using keys or going under applications, it just stays the same.
1
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3answers
68 views

Brightness control command on “startup Applications” is not working

On "Startup Applications" utility I added my suitable brightness to be configured each time OS is launched. But it is not working at all. I am having to bear system's very high default brightness. ...
0
votes
1answer
54 views

Problems with the drivers, mouse and display

I have installed Ubuntu 14.04 alongside windows 8 in my laptop. These are the issues I am facing after the installation: 1- I am not able to change the brightness of the screen. 2- The cursor keeps ...
0
votes
1answer
58 views

set the screen brightness on startup

On Ubuntu 14.04 I tried to dim the screen brightness to 50% on each system start in /etc/rc.local with the line xbacklight -set 50% right before the line exit 0 Why does this not work? Is there a ...
1
vote
1answer
62 views

brightness not dimming on battery [duplicate]

On my Lenovo Yoga Pad 2 with Ubuntu 14.04 there is no option to dim the screen when in battery mode. There is one option "Dim screen to save power" but it doesn't seem to have any effect: How can ...
0
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1answer
27 views

How to adjust brightness on Lubuntu?

I can't adjust my screen brightness. Indeed, I can't find this option in my system parameters. I am using Lubuntu 12.04. Thank you for your time :)
2
votes
2answers
334 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 ...
1
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0answers
52 views

Brightness keys do not modify actual brightness

I am really new to linux, sorry if this is an easy question. I recently installed Ubuntu on an old macbook with next to no issues, except for the fact that the backlight does not respond to the ...
0
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0answers
39 views

Any way to enable dynamic/automatic brightness adjustment?

My Lenovo ThinkPad X201 Tablet has a very bright screen (400 nits!), which is good for when objects on the screen are dark (say a night scene in a movie), but it is of course very blinding when ...
0
votes
1answer
56 views

Ubuntu not starting after running script for brightness

I was trying to fix brightness on Ubuntu 14.04. So i tried what is mentioned here How do I set default display brightness? i ran the scripts as mentioned on the terminal. sudo apt-get install ...
0
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0answers
42 views

Acer Aspire 7741z : Function key adjust brightness but displays 10% in Ubuntu 14

On my Acer my brightness function key works, but the confirmation display only goes up to about 10%. Also the function key seems to be the only thing that will adjust the brightness. I cannot adjust ...
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0answers
10 views

I have to shut down and restart to adjust brightness

Occasionally when I turn on my laptop, I am unable to adjust the brightness. Once I shut down and restart Ubuntu, I can do this, but it is becoming more frequent and inconvenient.
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0answers
68 views

Ubuntu 14.04 second display brightness problem

Few days ago I have setupped Ubuntu 14.04. I'm using laptop and second monitor via HDMI cable. Now every about 1-2 minutes my second monitor's brightness changes (increase after that decrease and ...
0
votes
1answer
98 views

Fan under load doesn't go full speed on Acer laptop

On Ubuntu 14.04 when I do any system intensive task like gaming and when temperatures reach over 80C for CPU and 70C for GPU, fan doesn't spin as fast as it does in Windows 7 under even lower temps. ...
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0answers
22 views

screen brightness limited when using keyboard

When I use my laptop's keys to change brightness, I can only go to a certain max. See image: If I use the brightness setting (standard Brightness & Lock app), I can put it to max brightness ...