Questions related to screen brightness.

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AMD radeon hd 8750m driver problems

I recently installed Ubuntu 14.04 LTS on my Samsung 3-series laptop. I've got some troubles and I've come to the conclusion that it is my graphics card/chipset (don't know exactly what to call it) - ...
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6 views

Backlight Brightness is not adjustable - Dual Boot with Win8.1 and two graphic chips

I'm really sorry to ask again a FAQ, but all suggested solutions does not work out. I have problem with the backlight brigthness controll. Ubuntu response to pressing Hotkeys with an poping up the ...
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0answers
28 views

Brightness control on Samsung Ativ Book 6

I recently installed Ubuntu 14.04 on my Samsung Ativ Book 6 (NP680Z5E-X01US). Since then I am completely unable to modify my brightness settings. The Fn buttons work fine, if I press Fn+F2/F3 I can ...
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0answers
15 views

Unable to change keyboard brightness on Ubuntu 14.04 login screen

I own an Asus N551JK laptop running Ubuntu 14.04. It works very well but at login screen, it seems that the system cannot "remember" past keyboard and screen brightness configuration, setting both ...
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32 views

When I boot some words showed on screen,what do they mean?

The text is: [ 1.3087766] pci 0000:00:01.0 ASPM: Could not configure common clock My pc is lenovo Y400,and OS is ubuntu kylin 14.04LTS(ubuntu for Chinese:-)) Intel corei5 3230M NVIDIA GeForce ...
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0answers
21 views

Trying to screen record on Ubuntu trusty 14.04 while using chromebook

I am using an Acer Chromebook 11 that i installed Ubuntu trusty 14.04 LTS using crouton. I wish to be able to screen-cast on Ubuntu and i am attempting to use Kazam screen recorder from the Ubuntu ...
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0answers
11 views

Ubuntu 14.04 brightness too low, keyboard backlight is on, how can i change this?

i used to have ubuntu 12.04 and when i upgraded to 14.04 "grub" will start with very dim light and my keyboard backlight on. i don't think is about fixing grub because it works fine and it still shows ...
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3answers
98 views

Brightness and volume buttons dont work?

I have toshiba chromebook 2 and i installed ubuntu 14.04.02 few days ago and noticed that my function buttons dont work. I mostly care about brightness and volume buttons. Is there any solution for ...
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0answers
27 views

How do I stop Ubuntu thinking it's installed on a laptop?

I have recently installed Ubuntu onto my desktop. I had some issues installing drivers for my graphics card and I had to reinstall Ubuntu. However, since the new install I have items in the top menu ...
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0answers
32 views

Gnome 3.12 brightness does not work

In Gnome 3.12 the brightness slider in the user menu does not work, My video card is an Nvidia GeForce 210 with two monitor connected. I searched for a solution using Google to no avail. Anyone have ...
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0answers
23 views

Display Settings on AC and Brightness key

I have recently installed Xubuntu 14.02 on a Lenovo Thinkpad E555 I got everything working however I have had these problems: When connecting AC power to the computer the Display Config comes up. ...
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1answer
44 views

Brightness Get Maximum at Every Restart [duplicate]

Brightness is not remembering it's last state. It make full brightness at every restart. I don't want that, I want my brightness(specific) -echo 50/6. Just it should remember my last brightness ...
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0answers
35 views

Strange boot issue (purple screen)

I'm somewhat of a noob when it comes to this kind of stuff, but I am a computer science student so I am familiar with operating systems. Anyway, I'll try to be as detailed as possible in describing ...
3
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1answer
76 views

Save screen brightness adjustment?

My laptop is Thinkpad T400 and I am running 14.04. Every time I decrease the brightness of my screen, it will be back to 100% next time I reboot. How can I save the adjustment and apply it once for ...
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0answers
18 views

Rewriting Fn key brightness functions

When doing Fn+Brigthness, the backlight goes in increments/decrements of 50%. So either no light, 50% light, or full light. I wanted to do it in steps of 10 so I installed xbacklight and tried to map ...
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0answers
37 views

Pipelight Video is Dark on Netflix, Amazon Instant Video

I installed pipelight, and it is working, I can see the picture, but it is very dim. It's like the brightness is turned down. I am also getting good sound. This is when streaming Netflix and Amazon ...
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0answers
21 views

Brigtness not working on HP Pavillion G6

So, I have read many questions about this with answers that I am sure worked for other people. I have an HP Pavillion G6 with Ubuntu 14.10 on it. To get my computer to start up I have to edit the Grub ...
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2answers
35 views

Grub can't be saved after modification

I have Ubuntu 14.04 32 bit machine on my lenovo g580. Default brightness keys are not working and can't decrease brightness in settings also. The brightness has been fixed at maximum. I followed few ...
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0answers
17 views

How to reset brightness config?

I've moved my SSD with Linux Mint 17.1 Cinnamon to another notebook (ThinkPad T520), but now the brightness control is not working correctly. The level ranges from zero to a little above, but the ...
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1answer
32 views

Laptop screen turns off automatically while using Ubuntu 14.04

I am using dual boot Ubuntu 14.04 and Windows 7. My laptop screen turns off automatically after some time in Ubuntu while the system still remains on. I have checked my brightness and screen settings ...
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0answers
42 views

Problem, cannot set brightness on Lenovo Z570

My problem is that I cannot set brightness using fn+arrows and any other way. I'm currently using elementary os base on 12.04 and that problem is not showing, but on every ubuntu with higher number I ...
1
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1answer
73 views

Can't change brightness at all [duplicate]

Here is what it looks like when I go to the "change brightness" option. I am booting in recovery mode because when I boot to normal Ubuntu mode there is nothing you can see on the screen, I can only ...
0
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1answer
78 views

Fn+F5,F6 keys to adjust brightness doesn't work

I have an Asus N56JK computer and I have tried many different options such as updating the Grub file in /etc/default/grub but to no avail. All other Function keys seems to be working but only function ...
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0answers
12 views

Run script when connecting power cord? [duplicate]

I have this really annoying problem where my screen's brightness goes to maximum whenever I connect the power cord to the laptop. Is there a way to run a script every time this happens so I can lower ...
0
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1answer
58 views

Flex 2 not waking up from sleep in Ubuntu 14.04, brightness controls also not working

I have a Lenovo Flex 2 with AMD A6 CPU and 4 GB RAM. It came pre-installed with Windows 8.1. I installed Ubuntu 14.04 on it (single boot). But I am facing problems as the laptop does not wake up from ...
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0answers
62 views

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.
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0answers
31 views

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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0answers
19 views

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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0answers
50 views

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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0answers
39 views

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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0answers
15 views

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 ...
0
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0answers
53 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
108 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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0answers
82 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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1answer
104 views

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, ...
0
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1answer
49 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?
1
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1answer
57 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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0answers
82 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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0answers
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 ...
0
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1answer
143 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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0answers
20 views

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 ...
0
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0answers
74 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 ...
1
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1answer
107 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 ...
2
votes
4answers
125 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 ...
0
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1answer
56 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 ...
2
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0answers
97 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 ...
0
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1answer
41 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
16 views

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 ...
2
votes
1answer
198 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 ...
0
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1answer
50 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 ...