Questions related to screen brightness.

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1answer
17 views

Please I am new to ubuntu 14.04 and i can't adjust my screen brightness

Please I am new to ubuntu 14.04 and i can't adjust my screen brightness. I'm using HP Pro book-450-G2. but i dual boot the ubuntu with windows 10 and my brightness can be adjusted in windows 10.
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0answers
14 views

Brightness function key : very slow response

I'm running ubuntu 14.04 on my Asus K55VD. brightness low function key is responding very late : aprox 30-45 seconds later the brightness is reduced. but rest of the others functions(Brightness Up ...
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0answers
30 views

brightness indicator doesn't change backlight brightness (15.10, Cinnamon, Nvidia GeForce GTX 970M)

the problem My laptop's brightness adjustment keys affect the brightness indicator, but do not affect the real brightness of the monitor's backlight. related facts My Ubuntu version is 15.10. My ...
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0answers
12 views

Ubuntu dimming even after brightness dimming disabled

^ I unchecked "Dim screen to save power" and my System 76 Gallago Ultra Pro with Ubuntu 14.04 installed continues to dim after about 30 seconds (less than a minute). It is really annoying while ...
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0answers
24 views

Having problems adjusting brightness in Ubuntu 15.10

I've installed Ubuntu 15.10 on my new MSI GP62 6QE laptop. I was having issues with Ubuntu 14.04 due to the Intel Wireless 3165 so I chose Ubuntu 15.10 instead since it comes with the Linux 4.2 ...
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1answer
45 views

Brightness problem with ubuntu 15.10 and z500 lenovo laptops

Hi and thanks for ur attention. For z500 lenvo laptop there is a problem with brightness key on windows 8.1 and windows 10; and each one has their own solution. Currently I have windows 10 and for ...
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1answer
30 views

Screen brightness (neither fn button or system settings/ brightness and lock do not work)

I can't change the brightness with fn button or through System settings/ brightness & lock.What should i do? my laptop model is Dell Intel® Core™ i3-4005U CPU @ 1.70GHz × 4 (64-bit) and for ...
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0answers
24 views

my brightness option is missing after upgrading the kernel [closed]

My OS had some WiFi driver problem so I upgraded to Linux kernel 4.2.8. Now my brightness setting is not working. My Elementary OS is based on Ubuntu 14.04 so I checked a related question but it ...
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0answers
22 views

Some partitions don't appear

When I uselsblk on terminal, this is the output NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 298,1G 0 disk ├─sda1 8:1 0 1K 0 part ├─sda2 8:2 0 143,1G 0 part / ...
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1answer
32 views

Turning the brightness completely down

I used to run the command xbacklight -set 0 to make my brightness effectively 0 i.e. it was almost impossible to see anything, which was really helpful for conserving my battery power. However having ...
1
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1answer
18 views

Display still reset to minimum after restarting in ubuntu 14.04

I already follow these instructions provided in Ubuntu StackExchange and display is still reset to minimum after restarting. 1- cat /sys/class/backlight/acpi_videoX/brightness gksu gedit ...
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0answers
16 views

How can I control the lighting screen in Lubuntu 14.04 LTS

I have tried to manually reduce the scan from my computer, but it is still too strong. I have Lubuntu 14.04 LTS. The model of my computer is HP.
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0answers
11 views

Cannot adjust brightness on Samsung NP370R5E-A06UK running Ubuntu 15.04

The issue is in the title. I have tried this as well as the top answer here, both achieved nothing. I should note however, that if I start up (or wake up from sleep) while not plugged in, I will get ...
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0answers
9 views

double brightness indicator ubuntu

I have double brightness indicator in ubuntu system tray. How can I fix it? I am using Ubuntu 14.04.3 LTS with KDE
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1answer
33 views

Installed Nvidia Drivers, but can't adjust brightness in the Settings

I recently dual booted Ubuntu 14.04 and installed the drivers for my GPU (Nvidia GTX 960). For some reason, I am unable to control the brightness using the slider in the Brightness & Lock ...
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0answers
17 views

How do I switch off the backlit of the keyboard when the screen lock automatically?

I have a apollo laptop (https://www.entroware.com/store/apollo), which comes with backlit keyboard. The keyboard is properly lit up, and I can choose between three levels of intensity (off, medium, ...
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1answer
20 views

must boot under rEFInd sub option vmlinuz

So I was having issues controlling brightness on my recent install of Ubuntu 15.1 on my MacBook pro and rashly followed the directions here : Brightness controls doesn't work on a MacBook Pro 5.5 ...
1
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1answer
26 views

Fn + left arrow shortcut activates screen settings

I'm running Ubuntu studio 15.10 (xfce). I have problem with keyboard shortcut for decreasing screen brightness Fn + left arrow. It is working but additionally it activates screen settings. How can I ...
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0answers
39 views

Asus x751lb ubuntu (gnome) 15.10 function key for brightness not working

I've tried like all the options for changing grub settings, some even screwed changing brightness at all, some allowed me to use even fn + enter to open calculator, but fn + f5/ fn + f6 nothing... ...
1
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1answer
90 views

Brightness indicator in the panel icon missing

As you can see the box icon with stop After a normal update I met with this. During updates I saw something related to brightness indicator, but I don't know about the update.
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0answers
22 views

RhythmBox , VLC , ubuntu's default video player Crashing [closed]

I recently upgraded my Ubuntu 14.04 . After upgrading I am facing following problems : RhythmBox crashes when trying to play songs. When trying to play videos via VLC, I am getting No suitable ...
1
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1answer
22 views

How can I dim my monitor?

On windows, I had an application called dimmer. I used it on my desktop monitor to make the brightness more manageable. I want an equivalent for Ubuntu. I tried xbacklight to no avail.
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0answers
17 views

Unable to control brightness on Xfce environment

I installed a normal Ubuntu and installed Xfce4 on it. (Not Xubuntu!) The brightness control worked beautifully on Unity Desktop Envionment after I install the AMD Catalyst driver, but not on Xfce ...
1
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1answer
32 views

Brightness level resets itself back to full brightness after every reboot

I can easily adjust the level of brightness with the function keys while I'm actively working in the OS, but it resets itself back to full brightness after every reboot which, of course, is something ...
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0answers
25 views

Brightness at minimum after opening closed lid Macbook Air 7,2 (13'', Early 2015)

I hope someone could help me to solve my problem. Today I installed Ubuntu GNOME 15.10 on my Macbook Air 7,2 (yes I know macbooks aren't the best choice but it was a present) and know I'm having the ...
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0answers
15 views

My brightness key is lagging severely and sometimes doesn't work at all on 14.04 LTS (HP Stream 11)

This is what happens when I try to lower the brightness - https://www.youtube.com/watch?v=z5HEVHx7roQ. When I start up my laptop, it dims the brightness and I can't see some of the screen with the ...
0
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1answer
41 views

Adjust screen backlight on ancient HP, with Lubuntu 15.10

I've installed Lubuntu 15.10 on my HP nx9005 (circa 2001), and all works great except that I can find no way to adjust the backlight brightness. I've had a look at various solutions, here and ...
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0answers
12 views

Brightness doesn't go to zero anymore

After a relatively recent update on Ubuntu 14.04.3, the lowest my brightness will go is: Before this update, I was able to turn it completely to zero (effectively turning off the backlight entirely ...
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0answers
10 views

Is there a way to tie the brightness levels of each monitor together?

I have two monitors, one external, one part of my laptop. In order to set the brightness on my external monitor I have to use this answer. But I really just want to be able to hit the button on my ...
0
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1answer
50 views

Shortcut keys on Acer CB3-111-670 Chromebook running Ubuntu 15.10 not working

I have Ubuntu 15.10 running on the internal SSD of a Acer CB3-111-670 Chromebook. After some running around to fix the audio, the last thing (that I can tell) doesn't work is the shortcut keys (volume ...
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0answers
36 views

Brightnes fn keys move brightness bar, don't change brightness level

I have an Asus laptop with an AMD processor. In the live cd, the brightness fn keys worked perfectly. However, I activated the additional drivers for fglrx-updates and 'processor microcode for AMD ...
0
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1answer
281 views

15.10 Brightness adjustment

I have a 2015 Thinkpad X1 Carbon that I just installed Ubuntu 15.10 on. I have noticed that there is a huge jump between the minimum screen brightness, where the backlight is completely off, to the ...
0
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1answer
22 views

Laptop screen brightness change seems to affect color, not backlight

I have a problem with my laptop (Acer Aspire 5750G), I can't change the screen brightness. I noticed that the only application with which I was able to change the brightness of my laptop screen is ...
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0answers
17 views

Ubuntu 14.04 LTS brightness not changing

I get a migraine if there is too much brightness and I've been searching the forums a lot and have not found a solution so far that worked for me and that is why I am posting this question. Please ...
1
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0answers
19 views

How to set brightness to my Last set level?

I have read a lot of Q&A to set brightness to a fixed level on startup. But that is not what I want. I want that script (/etc/rc.local ) to update itself dynamically. i.e, On every startup ...
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0answers
9 views

Issues in saving screen brightness

I have Ubuntu 14.04LTS and a HP Pavilion dv6500. My computer doesn't remember the amount of brightness everytime I turn it on. Can somebody help me with some terminal command lines? Thank you.
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0answers
6 views

Ubuntu 14.04.03 Screen dims when I plug in headset and system starts dimmed

Maybe these two are connected, so I made one question. My laptop is Dell 3542 (Inspiron 15 3000 Series) with Intel Pentium, 4GB RAM, kernel is 3.19.0-43-generic #49~14.04.1-Ubuntu SMP. When this ...
1
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1answer
108 views

Unable to change brightness in a Lenovo z500 laptop with Ubuntu 15.10

Brightness adjustment keys have no effect (although they are recognized by the environment), and I can't change the brightness using GUI tools as well. In Windows 10 i had the same problem and after ...
1
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0answers
177 views

Ubuntu 15.10(wily) Brightness control not working

The brightness buttons and the brightness control in system settings in Ubuntu 15.10 have suddenly stopped working. They were working fine at first(after I upgraded from 15.04). I have no Xorg.conf ...
1
vote
1answer
68 views

Custom command - one less than current brightness level

I tried using xbacklight, but it wasnt working so I made some custom global commands to control the brightness. For example: "Bright" : sudo bash -c "echo 20 > ...
1
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0answers
65 views

Hotkeys and slider for brightness don't work

I have an Intel processor with no graphics and Nvidia GTX980M with Nvidia driver. I just installed Ubuntu Gnome 15.10 and everything works fine except for the brightness controls. Changing both from ...
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0answers
35 views

Change default brightness level in Ubuntu 14. 04 LTS / Brightness is reset to Maximum on every Restart on Ubuntu 14.04 LTS [duplicate]

Recently I was going through the link below (Brightness is reset to Maximum on every Restart) and was trying to change the default brightness level on my system as its very annoying as the default ...
0
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1answer
76 views

15.10 Dell Vostro 3700 display brightness fn+key change problem

I have 15.10 default install, no any changes to /etc/default/grub. Now when I press Fn + arrowUp/Down I can see display brightness change notification. Moreover, /sys/class/backlight/acpi_video0/* ...
0
votes
1answer
43 views

Ubuntu screen brightness issue only at startup

Ubuntu 14.04 / Windows 10 dual boot The laptop can´t remember brightness before, but after manually set the brightness in the rc.local file, it can now remember the brightness level after boot into ...
1
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1answer
74 views

Brightness control is not working

The brightness control in the settings does not work. I have an Intel® HD Graphics 4000 (on a i5-3570K Processor) and run Ubuntu 14.04.03. I followed the instruction given in ...
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0answers
63 views

Strange problem with backlight (it worked and now no more?)

EDIT : It's started working again?! i went out on friday night and i left pc ON. This morning it was working. looking in syslog i saw this : Dec 10 22:41:00 LittleHP kernel: [ 262.553256] video ...
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0answers
16 views

How can I change my brightness on my two monitors via keyboard shortcut/key

I am using Ubuntu 14.04 LTS with two monitors and an apple keyboard with brightness keys. I have done some research and have come up empty handed. I an wondering if there is any way to connect my ...
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0answers
31 views

Cron job to set screen brightness not working in ubuntu 14.04

In the terminal, I ran: crontab -e Then I added the following cronjob in the file 26 21 * * * /usr/bin/xbacklight -set 80 This was supposed to set the brightness to 80% at 9:26 PM. But its not ...
0
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1answer
33 views

How do I set brightness to a lower level in lubuntu 12 (HP laptop)?

I tried everything I found online, but none of the methods I found worked. The buttons don't work, and there's no such thing as "Brightness" in Monitor Settings. I tried xbacklight -set but it didn't ...
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0answers
58 views

Changes in system screen brightness aren't reflected on actual screen. [Ubuntu 15.10][Laptop]

I've had this issue since 14.04.3 but I never bothered to fix it since I didn't use Ubuntu much. Pressing the brightness up/down function keys brings up the popup displaying the brightness level, ...