Questions related to screen brightness.

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0
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1answer
76 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
36 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
58 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
56 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 ...
0
votes
0answers
617 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
54 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
70 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
119 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 ...
5
votes
0answers
113 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
votes
0answers
268 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 ...
1
vote
0answers
76 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
48 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
84 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)?
0
votes
1answer
338 views

How do I adjust screen brightness / backight on a Toshiba Satellite C50D?

I know this is a known bug, it been asked and answered thousands of times before. I've spent the past couple of months searching for a solution and all have failed. My Fn keys won't adjust brightness ...
0
votes
0answers
50 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 ...
0
votes
2answers
79 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
vote
2answers
2k views

brightness control not working for nvidia driver on W530 2436CTO + Ubuntu 12.10 X64

Environment: ubuntu 12.10 x64, bios (have tried 2.06, 2.50). W530 2436CTO, 3720QM, K1000M. The problem can be described below (May looks duplicate at first sight) The back light of screen after ...
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 ...
3
votes
4answers
640 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 ...
3
votes
4answers
7k views

How do you adjust screen brightness on Acer laptop? [closed]

I have an Acer Aspire one 5742 laptop. I installed Linux Ubuntu 12.10 on it. I have one problem with it. no matter how I press the Fn+↑ or Fn+↓ keys I cannot adjust the Screen Brightness. It ...
0
votes
1answer
162 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
votes
1answer
329 views

Thinkpad W520 brightness modification requires suspend

I have a Lenovo Thinkpad W520 with 12.10 installed on it. The specifics are: Linux corellia 3.5.0-19-generic #30-Ubuntu SMP Tue Nov 13 17:48:01 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux It works ...
0
votes
1answer
271 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 ...
3
votes
4answers
6k views

Screen backlight control for Asus G55V

I've just installed Ubuntu 12.04 on an Asus G55V laptop and neither the laptop brightness control keys (FN+F5, FN+F6) nor the Brightness setting are able to control the backlight. Note that I've ...
1
vote
2answers
51 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. ...
4
votes
6answers
4k views

Can't adjust screen brightness on Macbook Pro 10,1 Ubuntu 13.10

I recently installed Ubuntu on my retina Macbook Pro (following this great guide). Everything works fine so far however the screen brightness / backlight cannot be adjusted neither by using the ...
0
votes
0answers
44 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?
0
votes
1answer
75 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 ...
1
vote
1answer
102 views

Easy brightness control

I came from linux mint they had a really nice applet for adjusting the brightness. Is there something like that, or can it be done by hotkeys or something? I am on ubuntu 12.10.
0
votes
0answers
137 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 ...
0
votes
1answer
131 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
votes
0answers
29 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 ...
0
votes
1answer
95 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 ...
2
votes
2answers
5k views

Fn-keys stopped working on a Lenovo Thinkpad Edge

I'm running 12.04 on a Lenovo ThinkPad Edge. I'm having these possibly related issues with things that worked perfectly when I installed Ubuntu: Most of the Fn-keys worked seamlessly after I freshly ...
1
vote
2answers
171 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.
0
votes
2answers
1k views

Asus x550L problems with Ubuntu 13.10

Problems with audio. Headphones work, but without them sound is not working. Many FN keys aren't working. The brightness levels, play buttons, etc. The brightness, if I adjust it, then I restart ...
0
votes
0answers
92 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
votes
0answers
115 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 ...
1
vote
1answer
1k views

Toshiba Satellite P850 FN-Keys not working

I could solve several other issues with my laptop thanks to this forum. The only thing I can't figure out is the non working FN-Keys for the brightness. Volume control is fine. Two things I found out ...
27
votes
8answers
41k views

Unable to change brightness in a Lenovo laptop

Brightness adjustment keys <Fn + ⇑/⇓> have no effect (although they are recognized by the environment), and I can't change the brightness using GUI tools as well. This seems like a problem in ...
3
votes
4answers
847 views

Lenove Z570 Brightness Setting Gone in Ubuntu 13.10

My Lenovo Z570 with Ubuntu 13.10 only now has not brightness controls. I tried some of the command line hacks (xbacklight and all) and checked all my drivers and bios (all are up to date) but nothing ...
0
votes
1answer
1k 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 ...
0
votes
0answers
130 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 ...
6
votes
5answers
8k views

How do I get the brightness control working on a Lenovo Yoga 13?

Brightness control doesn't work by default in Ubuntu 13.04. Solution for 12.10 doesn't work, also as this Any idea how to fix it? Update: After research I found how to change brightness manually. ...
0
votes
2answers
124 views

Nvidia Drivers break several hot-keys on Ubuntu 14.04

I have a ThinkPad W530, which has Optimus. When I am running the NVidia card with Nouveau or the Intel integrated card with Intel drivers, the Microphone mute, ThinkVantage key, and brightness works ...
1
vote
0answers
123 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 ...
1
vote
3answers
155 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
73 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 ...