A backlight is a form of illumination used in liquid crystal displays (LCDs).
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20 views
Screen backlight is Disabled After Installing Nvidia GeForce 9600m GT Drivers
since several weeks ago, I am in the quest for try to fix the back-light control on my Sony VGN-AW220j With Nvidia GeForce 9600M GT, but until date no luck after try so many recipes and fixes from ...
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1answer
87 views
Screen brightness stuck on max setting, FN+down only brings it down one level
I'm trying to get some control over the brightness of my Samsung QX411 (Integrated Intel graphics) on Ubuntu 3.04 (though I have the exact same issue on 12.04 and on Mint)
Using FN+up/down lowers the ...
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1answer
89 views
The dreaded Brightness issue (Fn keys + Max brightness)
I'm trying to get some control over the brightness of my Samsung QX411 (Integrated Intel and discrete Nvidia, though Ubuntu doesn't see the latter yet, I'll play around with Bumblebee later)
Using ...
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0answers
91 views
Default Keyboard brightness is not working
I am running Ubuntu 13.04 64-bit on an Asus UX31A. To control the default screen and keyboard brightness after the start, I wrote this to the rc.local:
echo 0 > ...
1
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2answers
125 views
brightness settings not ajustable
I gave it a search and found this for version 11.04 on an acer aspire;
sudo gedit /etc/default/grub
Edit two lines to read as follows:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash ...
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0answers
31 views
Keyboard light and screen brightness at 100% after startup
Well the problem is that after every restart the default screen and keyboard light is at 100% and it is quite annoying. Is there a workaround for this?
Thank You! :)
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0answers
42 views
How does the screen backlight work?
Everything about the backlight settings and controls work for me except:
Backlight resets to max. on every reboot/boot.
The backlight minimum goes on to complete black screen, instead of the minimum ...
2
votes
1answer
91 views
Keyboard backlight command by percentage
I want to make a keyboard shortcut to increase and the decrease the keyboard backlight brightness.
The command I have for full brightness is:
echo -n 100 > ...
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0answers
93 views
Backlight control keys with nvidia driver work sometimes
I've got a Vaio S11 laptop with Nvidia 310M graphics running Ubuntu 13.04 with nvidia graphics driver (nvidia-310).
Backlight control started working since I created a .conf file in ...
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1answer
332 views
How to fix Acer Aspire 4736z back light brightness control in Ubuntu 13.04?
A simple way to fix Acer Aspire 4736z back light brightness control problem using hot keys (Fn + Brightness +-)
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1answer
157 views
Modifying brightness control shortcut key bindings
I have a Toshiba Satellite R830 laptop with Ubuntu 13.04.1 64 bit. The Fn + F6 and Fn + F7 buttons adjust brightness until I put my laptop on sleep.
On wakeup they don't work any longer.
On Ubuntu ...
1
vote
1answer
78 views
Make a script run at startup
First of all,sorry for my bad English.
Im using Xubuntu 12.04 on Acer Aspire One D270.My Screen brightness
hotkeys (Fn+L/R) dont work.I installed xbacklight but it always shows
"No outputs have ...
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1answer
69 views
How to get the oBacklight solution to brightness problem working?
I can set the backlight using xrandr (although the mouse pointer stays sharply bright) but If I suspend the laptop, after waking it up it is on max brightness again.
I have a Dell 17 L702x and I have ...
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0answers
29 views
Asus K42JZ brightness/backlight returns to max whenever I restart
I have tried almost all the solution available in this forum but I got no luck. Every time I restart my Asus K42JZ, the brightness/backlight returns to MAX. Is there a specific way to solve this ...
1
vote
1answer
252 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.
...
2
votes
1answer
203 views
switcheroo to discrete turns off backlight on laptop screen
AMD cedar/ Intel ironlake hybrid graphics. Custom kernel 3.8.3. Free radeon xorg drivers.
When I switch from integrated to discrete, I do a killall lightdm and X doesn't automatically respawn like it ...
3
votes
3answers
185 views
How do I change the backlight brightness on an iMac 12,2?
Problem: I can't adjust the brightness of my iMac and it's killing me. (My eyes! The goggles do nothing!).
Has anyone gotten this to work?
-Booting with rEFIt 0.14
-Product Name: iMac12,2
...
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0answers
239 views
Screen brightness doesn't change (Ubuntu 12.04, HP Elitebook 8560w)
I have a HP Elitebook 8560w and I installed Ubuntu 12.04 on it. I can't adjust the screen brightness even though I can use the slider to lower the screen brightness, it doesn't have any effect. I ...
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2answers
276 views
Sony Vaio-Brightness Settings not Changing
I've searched this problem but I cant find a straight answer, If I go into etc/class/backlight there's nothing there. Could someone help?
I have the Nvidia Driver installed, and Fn keys aren't ...
1
vote
1answer
279 views
samsung backlight
I have a Samsung Series 7 Chronos (700Z5C-S02UB) and a couple of kernel updates ago (I'm currently on 3.5.0-25-generic ), I lost the keyboard backlight support.
Any idea on how to turn it back on?
...
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0answers
192 views
No backlight when installing Ubuntu 12.10
I know there are multiple threads covering this issue, but I did not find anything similar to mine.
I have an Acer Aspire 5741 here and I'm trying to install 12.10. However, my backlight goes off as ...
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1answer
54 views
Backlight flickers after lid close and switch to battery
Ubuntu 12.10 32bit with Fallback DE. I need to set to Classic for Citrix Receiver to work properly. When screens are maximized with Unity, the mouse is offset.
I can close and re-open the lid if on ...
1
vote
1answer
182 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 ...
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0answers
235 views
Backlight brightness at Toshiba Satellite L850-DJS Ubuntu 12.10
I have bought laptop Toshiba Satellite L850-DJS. I replaced windows8 with Ubuntu 12.10, and I have problem: screen backlight brightness doesn't changing anyway.
I installed ATI proprietary video ...
1
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0answers
268 views
Why can't I adjust the screen brightness?
I have a Toshiba Satellite laptop with an AMD 64-bit/Radeon HD video card, running Ubuntu 12.10. I can't adjust the brightness from the default maximum, neither the Fn keys nor the system settings ...
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0answers
88 views
No Blacklight with Nvidia 310.14 driver
With the new Nvidia 310.14 experimental driver I have essentially no backlight on my laptop screen. xbacklight and xrandr report the brightness as 100%, but its literally like the backlight is ...
0
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0answers
187 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 ...
2
votes
1answer
169 views
I can't dim my laptop's light
I can't modify my laptop brightness. Is it a BIOS problem? It works in win 7, but doesn't work in Ubuntu. It's an Acer Aspire 5750-6842 laptop with Intel HD graphics 3000 video chipset.
1
vote
0answers
136 views
Nvidia control function key with xbacklight
I aways had problems with nvidia brightness control, and since 2009 I use the nvidiabl. But there is a issue that brightness sometimes came back to full backlight.
So, since the nvidia is with new ...
0
votes
0answers
207 views
Toshiba Satellite Pro L300 - Problems with FN keys (Quantal)
I'm wondering if there could be a solution to the problem on topic: I don't have any of the FN+keys working propretly, should I expect something different? I'm looking in a way to get back fn+f6 and ...
1
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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?
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0answers
231 views
Disable keyboard backlight on Sony Vaio SVE14 [duplicate]
I've read a lot about using the following file to deactivate the backlight but for me it just doesn't exist:
/sys/devices/platform/sony-laptop/kbd_backlight
The sony-laptop folder exists though.
Is ...
0
votes
1answer
105 views
Backlight goes off during Ubuntu installation
During 32-bit Ubuntu 12.04 LTS installation on HP laptops, the back-light goes off and become unable to proceed.
I've experienced it on many hp laptops.
Do anyone provide the reason or a solution for ...
1
vote
0answers
179 views
How do I get brightness controls working on a Dell XPS m1710?
I've been reading on for a while now on how to resolve the issue of my backlight not working. I'm using Dell xps m1710 and my Fn arrow keys are able to control the brightness slider but the actual ...
7
votes
2answers
4k 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 ...
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0answers
86 views
Will this bios update fix DSDT problem?
Usually is is said that if you are not having any problems do not update your bios. When I'm running windows everything is fine. But for Linux I think the DSDT is broken.
According to this this ...
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 ...
1
vote
1answer
190 views
How to make a patched DSDT work in 12.04?
My Samsung R428 laptop can't adjust the backlight with Ubuntu 12.04. Under Mac OS X 10.8.2, I patched the DSDT file and solved the same problem. I did some search, well, it seems DSDT overriding is no ...
1
vote
1answer
241 views
acpi_listen only detects every other backlight hotkey press
I am trying to get the LCD backlight brightness control to work properly on my new ASUS G75VW-DH72 laptop in Ubuntu 12.10. I got it to mostly work by following the instructions that I wrote here ...
0
votes
1answer
628 views
HP Spectre XT screen dim (completely dark) on boot. Can this be fixed? [duplicate]
When my computer boots up, the LCD backlight is completely blank. I have to increase the brightness using the keys on my keyboard, and only then am I able to see the login screen.
I'm not sure how ...
0
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0answers
41 views
Backlight Turns Off When Avadon is in Fullscreen
I have Ubuntu 12.10 on an Acer Aspire 4736Z and I recently downloaded the game Avadon: Black Fortress. When I first launched it, the backlight shut off and I can't turn it back on using the screen ...
0
votes
1answer
315 views
FN + F7 don't work (before it allowed me to turn off the backlight LCD)
I thought this site could be useful but maybe I was wrong, or maybe I can't use it well (it's more likely!). Somebody can post a guide of how use properly this site? (I'm italian)
But is more ...
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votes
0answers
70 views
Backlight turns off when launching Braid
I have Ubuntu 12.10 on Acer Aspire 4736z and I installed Braid. When I have just turned on the computer, login and then launch Braid right away, it works just fine. But when I have already been using ...
2
votes
1answer
488 views
Brightness control increments brightness by 4 instead of 1
The value of /sys/class/backlight/acpi_video0/brightness increments by four when the brightness controls are used, but I am able to force the value to anything in [0-10]. I have a HP Envy 17-3200. ...
1
vote
1answer
420 views
Dim (NEARLY blank) laptop screen, secondary screen works - why?
My laptop screen is (almost) black while my secondary screen is fine. I believe it to be backlight / brightness related.
Problem description
it starts when I start the laptop
system loads and works ...
3
votes
1answer
485 views
How can light sensor be enabled for control brightness and keyboard back-light automatically?
I have A Sony VAIO laptop F-series () Nvidia and it has light sensor. When I was using Windows, this light sensor controlled the brightness and the keyboard backlight automatically due to the ...
3
votes
0answers
272 views
How to increase the amount of steps of brightness adjustment-key
The screen of my laptop (Dell Vostro 3460) supports 16 levels of brightness: Not only according to the manufacturer, but also as is clear from two OSs: Both Windows 7 and Ubuntu (dual-booted) support ...
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 ...
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0answers
294 views
Will a backlight keyboard indicator be included in 12.10? [closed]
I know it's not on 12.04, but will it be in 12.10? Is it in the betas currently?
Cheers
1
vote
2answers
5k views
How do I enable Backlit Keyboard on Asus N56VM
I recently bought an Asus N56VM which is suppose to ship with a backlit keyboard. However on startup and when dark there is no backlit keyboard. When pressing the Fn+F3/F4 buttons, the animation for ...
