Questions related to screen brightness.

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Screen brightness issue

I am having a problem with Ubuntu on my Netbook (Samsung NP-NC108-A09ID). The problem is when I try to change the brightness to a higher or lower level, nothing happens. Please help.
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Brightness is not decreasing in ubuntu 14.04 in my hp laptop

My laptop is d006tu and d009tu,when I am using Ubuntu 14.04 LTS I am unable to use function keys to control brightness?
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Volume shortcut keys working; brightness shortcut keys not working [duplicate]

I recently installed Ubuntu 14.04 on my Toshiba L840D with an AMD A8 CPU and an AMD Radeon HD 7640G GPU. Everything works as expected, except for the brightness shortcut keys. When I press F2 or F2 ...
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Screen Brightness Hotkeys with NVIDIA Graphics Card

I just installed the Ubuntu 14.04 and I'm loving it. I've used other versions before, but it's getting better and better. But there's one problem: screen brightness. I use an LG R570 laptop, with an ...
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How to increase Kubuntu 14.04 brightness range?

Hold your horses!. If you are hurrying to flag this as a duplicate of this question or this question, none of those have an answer to what is asked here. Thanks for the attention though. In ...
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Brightness resets after changing it manually

Every time I use the shortcut keys or xbacklight to change my screen brightness, it reverts a second later to no backlight. For example, I run xbacklight -set 50 and the screen brightens for a second ...
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22 views

Low brightness Ubuntu 14.10

I have an Asus X550LN with NVIDIA 840m + Intel HD 4400 but since i've installed ubuntu 14.10 the brightness is too low although in the system settings is at maximum. Some help? Fn+f5 or Fn+f6 works ...
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2answers
54 views

Ubuntu 14.04 stuck at console mode after graphics driver update

Actually I wanted to correct the well known Ubuntu brightness issue as addressed in this YouTubeVideo In essence, the guy says to change the Nvidia driver from open source to any other proprietary ...
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Brightness controller widget placement [on hold]

I just got the screen brightness and this is really what I was looking for. But one thing is; is there any possibility to place the tool to the next to up bar maybe next to the battery indicator or ...
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35 views

How to fix brightness on Ubuntu 14-04 LTS installed on macbook pro 2012 13"

I installed Ubuntu 14.04.02 as dual boot in a macbook pro 2012 13 I noticed that all function buttons works but except those that regulate the brightness of the screen.How do I fix this problem?
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Brightness control (Fn+ …) not working on Ubuntu 14.04 Asus Q502LA

I installed the Ubuntu 14.04 on Asus Q502LA laptop. Most of the things work fine, but brightness control does not work. First, everytime on reboot, the brightness resets to 100% brightness. Second, ...
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1answer
32 views

Low brightness Ubuntu 14.10

I have an Asus F550LNV-DM092H with NVIDIA 840m + Intel HD 4400 but since i've installed ubuntu 14.10 the brightness is too low although in the system settings is at maximum. Some help?
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1answer
34 views

How to stop screen from dimming when power cable is unplugged?

On HP Pavilion with Ubu 14.04 LTS, screen automatically dims when power cable is unplugged. I sometimes want to have maximum brightness, even when power cable is unplugged, for personal reasons. How ...
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33 views

14.04 LTS on Toshiba Satellite C75D-B. Brightness, WiFi, Fn-keys control and Suspend problems

This is a new laptop that I just bought. Came with Windows 8.1, now is a dual-boot. Sound Controls and Mute work with F9, F10, F11 like they do in Windows, but F12 for WiFi, F2 and F3 for brightness ...
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26 views

Boots to black screen only from hard drive [duplicate]

I have an ASUS X200MA that came with Windows 8.1. I got it to dual boot with Ubuntu 14.04 and I have used it for months. It suddenly ( perhaps after running a windows update ) started turning off the ...
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1answer
106 views

Ubuntu 14.04 LTS Brightness Problem

Yesterday I downloaded Ubuntu and installed it on my laptop (Sony Vaio PCG-71811M), with Windows 8.1 dual boot. I really liked Ubuntu, and i don't think I want to delete Ubuntu and turn back Windows. ...
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Turning the brightness down makes screen brighter

My brightness slider is the wrong way around! For example when I drag the brightness slider to its lowest my display is at full brightness and when I drag it further it goes dimmer. I am running ...
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0answers
36 views

How to stop brightness changes (screen dimming) on low battery?

Ubuntu 14.10 automatically adjusts screen brightness on low battery. It does so despite explicitly being set not to. How to prevent this behaviour? I'd like the brightness to stay on the manually ...
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1answer
75 views

Laptop brightness too low on Ubuntu 14.10

recently I switched to Ubuntu Gnome 14.10 64 bits on my laptop and I'm having some issues with the brightness. At first I couldn't change with the hotkeys, but I have already fixed it. The problem now ...
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4answers
112 views

Is there any brightness control for desktops?

I'm using Ubuntu Trusty tahr and I've noticed that there is no brightness control (like a slider), In windows I'll use Intel's graphics media accelerator to reduce brightness but here it looks ...
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0answers
58 views

brightness fuction key not works Kernel above 3.14?

I am Having Asus K55vd 64 bit laptop running Ubuntu 14.04 and Opensuse 13.2. I have problem for function keys (Wireless ,Brightness,Touchpad,sound). when i upgrade kernel above 3.14 the brightness ...
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0answers
213 views

lenovo g50-45 amd a8 apu graphics driver installation problem

i am new to Linux and i was using windows 8.1 and now switched to Ubuntu latest ,, i am not able to install catalyst drivers i tried many you-tube tutorials and couldn't successfully install ,,and i ...
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1answer
44 views

laptop monitor brightness always maximum upon charging

My laptop monitor brightness is set to maximum whenever I connect it to charging. I have gone to the brightness settings and changed this, but the problem repeats when I charge my laptop again...what ...
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0answers
74 views

Lowest brightness setting turns backlights off

I am running Ubuntu 14.10 on a Laptop. When I turn my brightness to the lowest setting it actually turns my backlights off and my entire screen goes black as if my computer was turned off. I have ...
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1answer
31 views

Brightness control turns off my monitor

When I press the keyboard combination to lower my brightness i.e. Fn+F2 my screen turn off and to turn it on I have to press brightness low and then brightness high button one after another. Can ...
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0answers
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Replacement Screen problem

I had a broken screen and I replaced it myself and now when ever I turn on the laptop it boots to Ubuntu and when it's booting the screen it gets brighter and brighter and becomes so bright that can't ...
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1answer
115 views

Dell Chromebook 11 - unable to set backlight and /sys/class/backlight/ folder is empty

I have installed Lubuntu on my Dell Chromebook 11 and everything works except for the backlight. Can't set the backlight with the brightness keys, neither with xbacklight,xdotool or any other GUI ...
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1answer
33 views

Brighness controls on Toshiba Tecra

The brightness controls do not have any visible effect on my Toshiba Tecra W50. I tried every combination of acpi_brightness=vendor and acpi_osi=Linux to no avail. How can I change my screen's ...
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1answer
39 views

Change default behavior of Fn+Funtion key

I have the latest version of Ubuntu 14.04 installed on my Toshiba Satellite C55D-B5212. All of the Fn key combinations work correctly except the brightness down and brightness up ones (Fn+F2 and ...
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1answer
99 views

What is the difference between GRUB_CMDLINE_LINUX and GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub

I'm troubleshooting a fn-key brightness control problem on my laptop, so I'm wading through a lot of config options in /etc/default/grub, as you can imagine. However, it's raised a question for me: ...
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0answers
45 views

How can I disable screen auto brightness in 14.10?

I have a Samsung 730u3e with hybrid radeon graphics, that comes with sensor(s) for screen and keyboard brightness. The keyboard auto brightness works very well, I can increase/decrease or turn off as ...
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1answer
91 views

Screen dim while brightness set to max on Xubuntu 14.04 everytime display turns off

I used to have an issue where every time my laptop would return from suspend, the screen was fully dim (as if brightness was at a minimum) even though the brightness setting was set to maximum - so I ...
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1answer
173 views

Ubuntu 14.04 brightness problem (Lenovo Z500)

My brightness controls weren't working before but I didn't really care, but somehow I lowered my screen brightness while downloading league through playonlinux. Now the brightness controls aren't ...
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0answers
16 views

customize ubuntu with bash scripts - never turn the screen off [duplicate]

I'd like to disable the screen from dimming automatically. It is manually done in Settings > Brightness & Lock > Turn screen off when inactive for: Never. I want to do it with a shell ...
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0answers
47 views

Suspend and hibernate break brightness adjustment

I am currently using Ubuntu 14.04 (architecture is amd64) with kernel version 3.13.0-44-generic on an HP Pavilion g7-1350dx. Output of lspci | grep -i vga to find GPU is as follows: 00:01.0 VGA ...
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2answers
49 views

Ubuntu 12.04 LTS is not booting after altering a text file in gedit, how to fix?

After failing to adjust my screen brightness in Ubuntu in various ways, I tried the following guided by an answer in askubuntu. I opened the following text file sudo gedit /etc/X11/xorg.conf It ...
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0answers
42 views

Laptop Brightness not remembered on Power Plugged in

On Ubuntu 14.10 Utopic, using a Samsung Notebook laptop, I can change the brightness correctly and it is remembered upon wake from sleep. However my problem is that when my laptop is on battery and I ...
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0answers
134 views

I can't adjust screen brightness in lenovo Z500

I'm using Ubuntu 14.10 on a Lenovo Z500. I cant adjust screen brightness. How can I get this to work?
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3answers
178 views

Brightness Fn keys suspend the notebook

In Ubuntu 14.10, everytime I press any of the "Brightness Fn keys" the notebook suspend, by the way the "Sleep Fn key" does nothing at all. Is there a way to remap all the Fn keys manually? Thanks!! ...
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1answer
365 views

screen brightness control not working: Lenovo g50-45: AMD Radeon: Ubuntu 14.04

I've a Lenovo G50-45 machine with AMD processor [Radeon APU A4-6000 with R2 Graphics]. I tried the solution from Rmano but no success. Using Ubuntu 14.04. I tried the solution pasted here: Ubuntu ...
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0answers
60 views

Screen Brightness Ubuntu-Gnome 14.1 Toshiba Satellite L755

SO I have: Toshiba L755 , Nvidia backlight Here are some error messages I am getting while getting updates through the terminal: W:Failed to fetch ...
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0answers
137 views

How to disable automatic brightness adjustment in Ubuntu 14.04?

I am running Ubuntu 14.04 LTS on a Dell 3542 laptop. My problem is that screen brightness changes depending on content. I think this is called automatic (or dynamic) brightness adjustment, as I stated ...
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1answer
88 views

Lubuntu Display brightness

Just installed Lubuntu 14.10 on my machine. I cannot change the display brightness. I have a slider in my power settings but it does nothing. Cannot post screenshot of the slider because of no rep ...
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2answers
169 views

Ubuntu brightness indicator stops working upon laptop open/close

So I installed Ubuntu 14.04 on a 2011 edition MacAir, and I had the common problem of being stuck with either full screen brightess or pure darkness, with no options in between. I installed ...
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2answers
358 views

Terminal command for checking/unchecking “Dim screen to save power”?

I am having problems preventing my laptop, running Ubuntu 14.04, from dimming its screen when on battery power. I have tried everything that is out there on the internet to prevent this happening, but ...
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1answer
72 views

How do I clear up textures on my desktop?

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 ...
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0answers
114 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 do not experience any problems with the brightness up key. I'm using a Dell ...
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0answers
72 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 ...
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1answer
58 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 ...
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0answers
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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 ...