Questions related to screen brightness.

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How to turn off Logitech K810 keyboard back light automation

I could not find terminal command to turn off the back light of keyboard. For example the following commands do turn off my laptop keyboard back light : sudo chmod 777 ...
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1answer
6 views

screen brightness on X1 carbon gen 3 wont change

I just installed ubuntu on a new x1 carbon gen 3. Its a great machine but i cant seem to change the screen brightness. when i hit the buttons i get the little on screen notification, but it seems to ...
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7 views

Can I display volume or brightness popup using command?

When you adjust your brightness or volume in ubuntu, you would see a popup notification in the top right corner of the screen to notify you the level of brightness or volume. Just as follows: I can ...
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1answer
29 views

ASUS X555LN Brightness fn key not working in Ubuntu 14.04

I have installed Ubuntu 14.04 on my ASUS X555L Laptop using an nVidia GeForce 520M Graphics card. The fn+f5/f6 keys are unable to adjust brightness. Currently my screen brightness level is maximum. My ...
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0answers
15 views

Software controller for any ATI/Nvidia GPU

I wanted to know which GPU to buy for my new PC in order to: 1) Work with Ubuntu. 2) Manage the contrast, brightness... etc. This is really important as I normally have my screens very dim (Via ...
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0answers
14 views

XModMap Key Remapping Not Totally Working

I have a Mac Keyboard I am using with new version of Ubuntu. Whenever in a web browser, I try and hit the F5 key to naturally refresh the page but in Ubuntu this key seems to be mapped to Keyboard ...
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0answers
17 views

gedit error gedit:2128

I am a beginner Linux user I use Lubuntu Core... I have been trying to add echo 9 > /sys/class/backlight/acpi_video0/brightness to /etc/rc.local and every time when I change something in ...
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0answers
11 views

Notifyd brightness notification not showing properly

I have the exact same problem described here. I'm using an nvidia driver and it was all right (I had to use a similar procedure to have my brightness control working). My xorg configuration files are ...
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0answers
52 views

Adjust screen brightness option missing in Ubuntu 14.04 LTS

I understand that there are command-line alternatives to this but I'm trying to figure out why the option is missing from my Brightness-Lock menu under system settings. The highlighted portion of ...
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0answers
23 views

How to Remap Brightness Keys

I have a Dell laptop which has some fairly standard media keys along F1-F12 as well as three special keys by the power button. For the longest time, my brightness down button hasn't worked. For some ...
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1answer
14 views

Nvidia Higher Resolution becomes bright and grainy

Does anyone know how to solve this issue? I'd like to use the higher resolutions, but when I do the display becomes annoyingly bright and grainy. I can confirm it happens on the Geforce 610 and higher ...
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0answers
25 views

Screen Dimming Anomaly

My Lenovo G780 with Ubuntu 14.04 is fine when the AC charger is plugged in. However, when unplugged, if my mouse does not move for ~12 seconds, the screen dims a bit, but this is not detected by my ...
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0answers
49 views

How to make the ambient light sensor work on Asus Zenbook UX303?

I have a Asus Zenboo UX303LN. There is a known issue with the brightness keys, which is no big deal for me but I would like the ambient light sensor to work. I didn't find much information on this ...
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0answers
14 views

Brighness and Lock now working

I installed xscreensaver but this ended up not being what I needed. So I removed it. But now My system wont lock the screen like it use to. The settings are set to lock after 1 min and ask for a ...
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2answers
77 views

screen brightness

Regarding the below topic please tell me is that possible to do it without adding any script to the startup. brightness of the screen So, I could use the function keys to adjust the screen ...
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1answer
67 views

brightness of the screen

Every time after I restart I have to enter this in the terminal to set the brightness: xrandr -q | grep " connected" xrandr --output LVDS --brightness 0.5 Could someone tell me if there is there ...
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1answer
26 views

Remap Fn+F3 from XF86Sleep to XF86MonBrightnessUp

I have got a new laptop which is Toshiba Sattelite Pro R50 and I've installed Linux Mint 17.1 on it. After a while it turned out brightness buttons are mapped incorrectly. Fn + F3 is mapped to ...
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1answer
59 views

Screen Dimming Changed After Upgrade to 15.04?

Up until this week I was able to dim my laptop to a very dim setting, barely any brightness at all, which I liked at night. After upgrading to 15.04, the maximum dim is way brighter than it was ...
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1answer
139 views

14.04 on Asus GL552JX: Fn+F5 and Fn+F6 Brightness Problem

I've recently installed Ubuntu 14.04.2 LTS on my ASUS GL552JX. The one that always bugs me is the Fn+F# button functionality. This time, all Fn+F# button combinations work except for Fn+F5 ...
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0answers
37 views

Backlight control broken on 14.04 on Lenovo U310

I'm unable to change the backlight brightness under 14.04. habefaro@habefaro-Lenovo-U310:~$ uname -a Linux habefaro-Lenovo-U310 3.16.0-34-generic #47~14.04.1-Ubuntu SMP Fri Apr 10 17:49:16 UTC 2015 ...
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0answers
61 views

Special Function Keys are not working in Ubuntu 14.0.4.2 LTS

Volume (+/-/Mute), Brightness (up/down), Disable Webcam, Mute Microphone and Projector Function keys are not working (when used through laptop keyboard) but Next, Pause/Play and Previous keys are ...
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0answers
55 views

How do I can reset brightness settings to default by Live ubuntu?

I tried to set my machine brightness via this link (How do I set default display brightness?). After rebooting, I haven't any screen now. I use ubuntu 14.04, Can say me any body that how do I can set ...
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1answer
68 views

My laptop brightness doesnot be darker with function key

My laptop has intel hd graphics 4400, and it doesn't work well on ubuntu 14.04 , so I upgraded to ubuntu 15.04. It works fine, but i cannot change my brightness. The funny thing is that i can change ...
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0answers
20 views

How to Disable Ubuntu Phone “auto dim” function?

Is there a way to disable the auto dim function of the Ubuntu Phone (14.10 r22)? Even though I can disable the auto-brightness function and set the screen timeout to 10 minutes (or never) the screen ...
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0answers
42 views

Nvidia Brightness Control Not Working

I have an Acer laptop with Nvidia 520M. The problem is, the screen brightness isn't working. If I switch to use Intel display driver, the brightness can be controlled. I've tried all ways such adding ...
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1answer
52 views

My brightness controls aren't working (Ubuntu 14.04), how to fix?

I use either the buttons or the ui but the brightness doesn't change. What do I need to change to get brightness working? I'm using a Toshiba Ultrabook in case it is relevant.
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1answer
31 views

Disable Fn-keys brightness change on Dell Inspiron E1405

I've got an old Dell E1405 which smoothly runs 14.04, with one caveat that is. When I press the Fn button with arrow-up or arrow-down, the brightness jumps in huge steps. Is there a way to disable ...
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0answers
36 views

How to display correct keyboard backlight levels?

I have a DELL latitude E6420 running Ubuntu 14.04 LTS. When pressing Fn+right button, I am able to change the keyboard backlight (works good), but on screen, this on screen notification (notifyOSD), ...
2
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1answer
122 views

Using /etc/rc.local to turn off keyboard backlight no longer working in 15.04

I have an Asus laptop, and the keyboard backlight comes on full at startup. I formerly used the instructions here to issue a sudo command to turn it off. Basically, the steps were: gksudo gedit ...
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0answers
23 views

how to make britness control work on ubuntu 14.04 with nVidia graphic card?

I have a Sony vaio VPCEJ equipped with an Nvidia Gforce 410m with cuda ,currently I am under ubuntu 14.04 and using the Nouveau Nvidia driver for my graphic card because I found it to be the most ...
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0answers
54 views

How to link brightness button to correct brightness script

I recently upgrade my Ubuntu from 12.04 to 14.04. My laptop has always had incomtibility issues between the brightness button and the actual brightness set up. In 12.04 I had fixed the problem by ...
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2answers
194 views

How to Adjust Brightness in Lubuntu 15.04

I just installed Lubuntu 15.04 on my Toshiba Satellite laptop and can't figure out how to adjust the brightness. I can't find it anywhere and have been looking at other people's questions for an hour ...
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0answers
15 views

screen brightness does not affect working hours

I have noticed that screen brightness does not affect working hours on battery of my laptop in any Ubuntu version I used so far (Ubuntu 12.10, 13.04, 13.10, 14.04, 14.10 and 15.04). I can increase ...
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2answers
97 views

Why do I have two drivers for my display?

I have bought a new laptop recently it is the Asus K555LD and I have ubuntu 14.04 installed and up to date. One of the problem I faced is finding the driver for my nVidia GeForce 820M. After some time ...
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0answers
59 views

Ubuntu 14.04 Black Screen after login (due to changed brightness?)

I have an hybrid switchable (AMD+Intel) PC, where I have both ubuntu and windows 7. Two days ago I was using Ubuntu, and since the battery was low I lowered the brightness. Usually, when I lowered ...
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0answers
195 views

Laptop with Ubuntu Mate 15.04 screen dimming after 10 seconds

I watch movies on Youtube, Popcorn or XBMC and after 10 seconds when I have my laptop disconnected from power the screen dims. I know that there is an option in dconf-editor for longer timeout but ...
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1answer
43 views

Brighness control problem

I'm using 14.04LTS. The function keys that control brightness have been reversed such that when I press Fn + right arrow key, the brightness reduces and when I press Fn + left arrow key, the ...
0
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1answer
136 views

Kubuntu 15.04 : Brightness controls not working vs 2 graphic cards?

Just installed Kubuntu 15.04 on my ASUS X555LD (i3) to try out KDE 5.2, and I'm having a few issues. Brightness controls are not working using fn+F5 or F6 I'm a bit confused. My laptop ships with an ...
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0answers
52 views

Error request power-well from i915 ( Lenovo L440 - Ubuntu 14.04)

I'm using Ubuntu LTS 14.04 on my Lenovo L440 and until yesterday I hadn't experienced any problems, when I started my laptop and received the error message: [ 3.331621] hda-intel Error request ...
0
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1answer
79 views

Screen dimming doesn't work (Ubuntu 14.04 LTS)

I have an Asus laptop (G53SW), on which I installed Ubuntu 12.04 (because I had it laying around) which upgraded itself to 14.04LTS. For the most part it works well but the one annoying issue is that ...
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1answer
311 views

Ubuntu 15.04 brightness doesn't work

brightness on my Lenovo-IdeaPad-P400-touch graphic Intel® Ivybridge Mobile os type 64-bit Ubuntu 15.04 doesn't increase or decrease after updating from 14.04 please help!!!
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0answers
80 views

No Brightness Control in Samsung Q430 Laptop EXCEPT with Bumblebee and Ubuntu MATE 15.04

Over the last few years, I've used various flavors of Ubuntu (as well as Mint and other forks) and up to Kubuntu 15.04, they don't ever seem to have functional brightness control on my Samsung Q430 ...
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2answers
93 views

Brightness control not working for ubuntu 14.04

When pressing brightness control buttons on my laptop, there is no change in brightness. Brightness is set at a very high level and it hurts the eyes. Provide some solution ASAP.
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3answers
269 views

systemd-backlight on Ubuntu 15.04

Hey people of the internet! I have a problem saving/restoring the brightness on my laptop... I am running Ubuntu 15.04 server, with Xfce4, but booting default to command line. My problem now is, ...
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0answers
29 views

How do I fix an login error ( black screen with cursor on top left corner )?

Actually I've faced problem in adjusting the brightness in Ubuntu 14.04 LTS. Afterwards, I've configured the "20-intel.conf" file with the following command sudo gedit ...
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1answer
34 views

I cannot adjust brightness of my laptop HP g4 1351tx

I cannot adjust brightness of my laptop HP g4 1351tx. My lshw -c display output. *-display UNCLAIMED description: VGA compatible controller product: GF119M [GeForce 610M] vendor: ...
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1answer
43 views

Low screen brightness

If I turn on my laptop without charger, my screen brightness is very low, not only in Ubuntu desktop but in Grub too. I've got dual-boot, Windows hasn't got this problem. So can you suggest me any ...
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0answers
77 views

Function keys and numeric keypad problems on packard bell tk85

i've installed Ubuntu 14.04 on my packard bell tk 85 but i'm having problems with the built-in keyboard. Looking at the keyboard setting i can see that the keys from F1 to F12 are mapped correctly. ...
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0answers
90 views

Ubuntu MATE brightness keys not working on MacBookPro7,1 with NVIDIA driver, even after fix

I tried the fix detailed in the first answer for this question: Brightness not working after installing NVIDIA driver The second answer caused a failed boot and I had to fix it via Recovery. The ...
0
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1answer
91 views

Ubuntu gets stuck at boot screen (freeze, not black) after attempting brightness fix for NVIDIA card

I tried editing /etc/X11/xorg.conf as detailed here: Brightness not working after installing NVIDIA driver My Ubuntu MATE installation on my MacBook Pro Mid-2010 13" now gets stuck at the ...