A backlight is a form of illumination used in liquid crystal displays (LCDs).
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votes
7answers
1k views
How to increase brightness in smaller steps?
Is there a way to adjust lighting step ? I have Lenovo L520, and Fn + Light Up or Down adjusts by 20%, how can I adjust the step to 10% ? it will help me fine tune lighting at my dark room.
4
votes
4answers
5k views
Backlight Issue
When I booted up my newly installed Ubuntu 11.04, I discovered, to my dismay, that the backlight was off by default. The keyboard shortcut (which is Fn+F6 on my Acer Aspire 4736) for turning on the ...
7
votes
4answers
10k 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% ...
3
votes
1answer
2k views
How do I make Fn+f2/f3 change the brightness on my HP dv7-6135dx?
The problem described below riddled me for quite a while and couldn't find a straight forward answer anywhere online. I have found a solution and I would like to use this post as a documentation ...
1
vote
1answer
2k views
Keyboard light hotkey (Fn + F3 and F4) rarely work on an Asus G60J
Im using Ubuntu 12.04, and my laptop is an Asus G60J.
Specifications:
Ubuntu 12.04 64bit
Intel i7 720qm
Nvidia gtx 260m
4gb RAM
The laptop always start with the keyboard backlit On. The hotkeys ...
0
votes
1answer
1k views
Keyboard backlighting not working on a Vaio laptop
I installed Ubuntu 12.04 on my Vaio laptop (model VPCSB11FX) last night and one of the issues I'm having is that the keyboard backlighting doesn't work.
I saw this question solving a similar problem ...
3
votes
3answers
11k views
Keyboard backlight not working on an Asus N56V
See question 166263
The FN keys are not working
Using answer in 166261 question I installed the asus-wmi-dkms_0.2_all.deb.gz package
Now, using xev I see that the keys emit keycodes (for backlight ...
6
votes
1answer
6k views
How to stop gnome-power-manager from changing the global backlight setting?
After installing Ubuntu on my ThinkPad T510, the GDM screen and GNOME session would always start at 100% brightness.
I quickly found out, that this can be controlled via gnome-power-preferences, but ...
3
votes
2answers
1k views
How do I deactivate dynamic contrast on a Dell XPS?
I am experiencing annoying automatic backlight brightness changes under ubuntu 12.04 LTS on my Dell XPS ultrabook.
It seems to be connected to the amount of white pixels on the screen (switching ...
2
votes
1answer
2k views
GUI changes brightness in wrong /sys/class/backlight/*/brightness
When I use Fn+F6 / F7 (brighness down and up on Toshiba) the brightness notification opens up and responds, but the actual screen brightness remains unchanged. When I go to Settings > Brightness and ...
3
votes
0answers
470 views
Switch off laptop backlight when locking screen [duplicate]
Possible Duplicate:
How can I disable backlight when I lock the screen?
I'm using an IBM Thinkpad t61 and wish to have the backlight switched off when locking the screen.I've been told to ...
2
votes
3answers
3k views
I cannot change the screen brightness
here's my problem:
Ever since I installed Ubuntu 12.10 on my computer I haven't been able to change the screen brightness, it was always set to the maximum. I did take a look at this post:
Decrease ...
7
votes
2answers
3k views
How to make keyboard backlight Fn buttons work in Samsung Series 9?
I've just installed Ubuntu 12.10 on my Samsung 900X4C. However, I can't get the keyboard backlights to work.
I added the keymaps as per community docs - Samsung Series 9 (section Function Keys). But ...
2
votes
3answers
1k views
Macbook Pro boots with full screen brightness and keyboard backlight
I have dual-booted my Macbook Pro with Ubuntu 12.04 . Whenever i log-in to Ubuntu, it does so with full screen brightness and keyboard backlight at full . How do i get rid of this? How can i tweak the ...
2
votes
3answers
2k views
Decrease Backlight Below Minimum
I have this laptop that doesn't handle the backlight very well.
In /etc/default/grub, I have added a acpi_backlight=vendor function to get it to work at all. Which is cool, and the backlight now ...
1
vote
1answer
236 views
How to use xbacklight with brightness keys in a VAIO
I have a Sony VAIO VPCCW15FL, with Ubuntu 12.04 installed.
Sadly, the brightness keys do not work out of the box, although the brightness meter reacts to the brightness up/down keypresses.
...
6
votes
1answer
453 views
Can you help me write a script to set a new default brightness for the screen/keyboard after login?
On my Macbook Pro Ubuntu alsways boots with...
keyboard brightness at maximum illumination
screen brightness at maximum illumination
...both which I need almost never during normal usage.
...
4
votes
2answers
3k views
Keyboard won't light up on a Sony Vaio VPCF121FX
I've been using my Vaio VPCF121FX for over a year now, running Ubuntu 10.10 and then 11.04 and my backlight keyboard has always worked flawlessly. Until now, i just install Ubuntu 11.10 and this ...
2
votes
0answers
914 views
Keyboard backlight support for Asus G55VW
The FN+F3 and FN+F4 key combinations are not able to control the keyboard backlight on my Asus G55VW.
I could live with a command line solution so I tried the solution proposed here: ...
1
vote
1answer
582 views
No brightness control on Asus 75 laptop
How can I get the brightness on my ASUS G75 laptop to work in Ubuntu 12.10 alpha?
On my MacBook Pro, there used to be an nvidia-bl-dkms module. On my Dell XPS 15z, it worked out of the box. Now I ...
1
vote
1answer
388 views
How to prevent screen from going black (back light is shut down) at startup (laptop) Ubuntu 12.04?
So,in may laptop with Ubuntu 12.04, the startup is like this:
1) I see the Ubuntu logo with the 5 dots on a purple background for a few seconds.
2) The screen goes completely black (no back light), ...
2
votes
2answers
1k views
How to disable Macbook keyboard backlight
How do I disable the keyboard backlight, by turning it completely off, on a Macbook in 12.04?
Whenever I reboot, Ubuntu sets the backlight to 100% brightness, and frustratingly the new function keys ...
1
vote
1answer
174 views
Brightness and actual backlight mismatch after reboot
This is not a duplicate of this or that!
The problem in detail
The brightness hotkeys works well in increasing or decreasing the brightness, but if the brightness is less than 100%, after a reboot ...
1
vote
0answers
1k views
Brightness not working Acer Aspire One 756-2623 [duplicate]
Brightness not working Acer Aspire One 756-2623 with Ubuntu 12.04. Also the mousepad right-click isn't working ether. I'm completely new to Ubuntu and Linux in general.
How do I fix it?
1
vote
1answer
994 views
Brightness Hotkeys Only Slightly Work
I just installed Precise on my Samsung Laptop (QX412-S01au, using Ubuntu 2D). The brightness hotkeys sort of work:
Adjusting the brightness using the slider in the control panel works just fine
...
0
votes
0answers
185 views
Mac Keyboard Backlight ubuntu 12.04
Running Ubuntu 12.04, I can't get the keyboard backlight on a Macbook Pro (mid 2012) to turn on. When I press the brightness button, the display shows up on full but the lights do not turn on. It ...
