Questions related to screen brightness.

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1answer
13 views

Asus A455LJ brightness Fn+F5+F6 doesn't work on ubuntu 16.04

i've just installed ubuntu 16.04 on my asus A455LJ i5 5200u with Nvidia 920m, and just install nvidia driver properly but i can't get my brightness control Fn+F5 nor Fn+F6 work, but in the system ...
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1answer
16 views

Help! No brightness slider in the settings (ubuntu 16.04 desktop with nvidia GTX960)

Just installed Ubuntu 16.04 on my system(cpu:amd fx 6300),there is no setting to change the screen brightness.earlier i was using deepin os 15.2 and the brightness slider worked perfectly. I have ...
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0answers
13 views

Cannot change display brightness without rebooting

I searched this site for an answer on this question and found this. The owner of that question has mentioned that the computer should be rebooted to take the brightness change to effect. I have the ...
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0answers
18 views

Brightness doesn't change on Dell XPS15 9550 with 16.04

If I try to change screen brightness on my Dell XPS15 with Fn + F11 or Fn + F12 or in the System Settings Dialogue, nothing happens. The bar indicating the screen brightness changes but the screen ...
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0answers
23 views

Function keys, layout switching don't work for 5~ minutes after boot (16.04)

I'm running Ubuntu 16.04 LTS For some reason, for 5~ minutes after booting, the system wouldn't respond to function keys (brightness and audio control for example) and I can't switch layouts Does ...
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0answers
43 views

Problem adjusting the brightness

I'm fairly new to Ubuntu and I've managed to take care of almost everything but brightness. Right from the begining, brightness is at its peak and it's hurting my eyes by now and I have no obvious way ...
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1answer
24 views

x220 - Ubuntu 14.04 - Screen dims on login and logout

I have a Lenovo x220, i5 with BIOS 1.40. I have a issue when booting into Ubuntu to login and when I log out where the screen dims and is barely visible until I increase the brightness. I had a ...
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0answers
23 views

Scale volume and/or screen brightness with a logarithmic scale

I own an Acer Aspire E5-773G notebook running Ubuntu 16.04 with Unity Desktop. When I change the volume or screen brightness level (no matter whether using Fn+Arrows or through e.g. the Volume ...
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0answers
21 views

Lenovo Z400 low brightness video driver problem

I have a laptop ideaPad z400 from lenovo that there is a brightness trouble. When it was with windows 10. I were with the same problem, but I could fix easily installing default driver. But now, I've ...
3
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1answer
68 views

Backlight too low on Ubuntu 16.04 (Lenovo Laptop)

I can't get the brightness control to work properly on my Ubuntu 16.04 installation. My laptop screen appears really dark, but my second monitor works well. I've already tried a lot of alternatives (...
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2answers
50 views

brighntess control not working

I have got a new Ubuntu update to 14.04 LTS on lenovo ideapad 500. The brightness control buttons(i.e. F11 and F12) aren't working. It has Intel Corporation Sky Lake Integrated Graphics (rev 07).
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1answer
59 views

I can't set the brightness of my system

Afetr some updates of my system Ubuntu 16.04 LTS; the brightness is higher, I'haven't possibility to set it, It doesn't appear on power manager. I've installed xbacklight and set this configuration ...
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0answers
27 views

Can't Control Brightness on HP Envy All-in-One 24-n014

I haven't been able to control the bightness on my computer. It is running Ubuntu 16.04 LTS and dual boots with Windows 10. My processor is an Intel Core i5-6400T and my graphics card is an Intel HD ...
1
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1answer
35 views

Media keys on Macbook Pro and i3

I have just configured Ubuntu on my MacBook Pro (June '15), and I have put i3 on it. I am mostly glad with the result, but I cannot figure out how to configure my Media keys (play, pause) Volume ...
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0answers
11 views

How can I preserve the brightness settings of my laptop display on standby?

I use a Lenovo Thinkpad X230. Occasionally it occurs that the brightness is being reduced to a much lower value on resume from suspend. I would like to preserve the brightness setting as set by Fn + ...
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0answers
40 views

random event changes screen brightness automatically

I'm a new Ubuntu user, installed Ubuntu 16.04 (on my MSI laptop) a couple of days ago, and I've loved it so far but there's something that's been bothering me... the screen brightness changes randomly....
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1answer
51 views

Can't control brightness in Ubuntu

I have an old desktop with an Acer CPU having Intel graphics card running Ubuntu 14.04 . I can't find a way to adjust the display brightness. I have gone through many threads here and googled many ...
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0answers
17 views

Ubuntu screen goes black after brightness is turned down

So my brightness hot keys work great on Ubuntu 16.04, but only when I go between 100% down to 83%. Once I hit 82% my entire screen goes black. If i turn the brightness back up it works fine, but I ...
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0answers
20 views

Can't change Display brightness “REAL TIME” on my Acer Aspire 5740 laptop

I am on an Acer (Aspire 5740) laptop and running Ubuntu 16.04LTS 64bit alongside Windows 10. I noticed that brightness control does not work real time when I try it in settings or with Fn+brightness ...
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0answers
23 views

Function keys change wrong backlight file on my Acer Aspire One

Whenever I press the function keys to change my laptop's screen brightness, it modifies the value stored in the file /sys/class/backlight/acer-wmi/brightness, but my screen stays the same. With a bit ...
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0answers
73 views

I can't change the brightness on Ubuntu 16.04

I was able to change brightness manually before but unfortunetly this solution doesn't works for me anymore. Here is the solution that used to work for my computer : Now I can still change the ...
0
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1answer
34 views

Ubuntu 14.04 brightness issue

I have a Samsung laptop although I don't think this is relevant to the issue. If I boot my laptop on AC power, all brightness functions work properly even if I subsequently remove it from the power. ...
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0answers
29 views

Screen Brightness not binded to Multimedia keys properly

After I installed Ubuntu 16.04, I found that the brightness of display was set to brightest possible and I wasn't able to change it. Then I installed Brightness Controller and it worked. Then from ...
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0answers
33 views

How to change intel backlight to acpi_video?

In my ubuntu I can't change my brightness through nor through system setting. I found that brightness is controlled by intel card rather than acpi. Meaning in folder /sys/class/backlight I have two ...
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0answers
57 views

xbacklight - No outputs have backlight property

I am running Lubuntu 16.04 Attempting to run xbacklight -get gives me No outputs have backlight property There is only one directory in /sys/class/backlight, which is intel_backlight. I have ...
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3answers
124 views

Update brightness level depending on the power source on 16.04 LTS

I recently migrated to 64 Bit 16.04 LTS from 32 Bit 14.04 LTS on my Toshiba L645 laptop. In 14.04 LTS system, I had a script that automatically updated the brightness level depending on the power ...
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0answers
33 views

Change minimum brightness level on Meizu Pro 5 Ubuntu Edition

Meizu PRO 5 screen flicker in low brightness mode. This is not hardware defect, but my eyes isn't happy with this problem. I want set minimum auto-brightness level at 30% I found this bugreport https:...
0
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1answer
33 views

How to fix auto-dim?

It seems like many people have asked how to disable the auto-dim feature (System Settings -> Brightness & Lock -> Dim screen to save power). But I am having the opposite problem. I want this to ...
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0answers
56 views

thinkpad_acpi disabling brightness events

After installing routine updates, my keyboard brightness controls, wireless on/off, and other controls have stopped working. Interestingly, the 'lock' key still works. I have looked at a few other ...
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2answers
186 views

How to Control Backlight and Set Max Limit Brightness in Display of Ubuntu 16.04?

My Macbook Air 2013 power lasts 1.5 hours with just too bright light. More than 7 hours with normal light (that is 30-40% of the current max) corresponding to my default brightness in OS X where the ...
0
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2answers
73 views

Screen brightness problem on asus u82u with radeon HD6320

I just upgraded my laptop to the newest ubuntu version 16.04 LTS and noticed that I can't change screen brightness. I have tried all methods with GRUB which I find in google, but still can't fix this ...
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1answer
96 views

Dim screen light even though I have brightness on high

So I currently am using Ubuntu 16.04 LTS and the brightness button registers my screen brightness on high, however, the actual brightness that I see is the lowest. I've tried using terminal codes to ...
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1answer
122 views

Brightness Does not work at all Samsung ultra book intel backlight

I have a problem with my 530U4E/540U4E Samsung Ultrabook Backlight settings; the system doesn't seem detect the change in brightness settings. To fix it I tried the "Intel backlight Fix" because my ...
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0answers
25 views

How can I temporarily disable my screen lock settings during video playback?

I use my laptop to watch movies (crazy, I know), sometimes in a browser (Firefox) and sometimes in Totem. Either way, while I'm watching, the screen dims and eventually locks, per my Brightness and ...
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0answers
71 views

Nvidia backlight/login screen/external display issue

I`m combining this three issues becauese they are probably connected with each other. 1. Backlight is not natively supported. In order to set backlight using function key on keyboard I have to add ...
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0answers
46 views

Lubuntu 16.04 reduces backlight brightness to minimum on high load/temperature

The question is how can I disable this behaviour? It is maybe a kernel related thing but I could not find any option to disable it. If I put the brightness back to maximum, after some time the ...
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0answers
30 views

Guide to using trayer?

I am trying to use trayer through command line and I don't understand how to add items onto the actual tray. I am trying to add brightness indicator next to the wifi symbol so i can easily adjust my ...
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0answers
82 views

How do i disable Automatic Brightness in Ubuntu-Gnome [16.04/15.10]

Before someone points me to this I would like to point out that I want to completely disable the auto-brightness change feature as it doesn't work at all for me and neither am I interested in any auto-...
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0answers
57 views

Adjusting brightness to my laptop

I try through System Settings to change the brightness of my screen, but nothing happens. I also tried to follow this answer how to adjust screen brightness in ubuntu 14.04?. But I think that the ...
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0answers
66 views

gsd-backlight-helper spamming the log after upgrade to 16.04?

Since updating to 16.04 from 14.04, I have the syslog spammed by: SEC: May 22 13:26:43 samsung-romano pkexec[21248]: gdm: Error executing command as another user: Not authorized [USER=root] [TTY=...
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0answers
13 views

laptop's brightness resets to least value automatically and haven't been resolved from past few version

My laptop (Dell Inspiron N5110) is having a brightness issue. Brightness automatically resets to least value 0 from the past set value (say 3) when I increase the brightness it jumps to 4 and now I ...
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0answers
25 views

Screen Flickering and changing Brightness

I Recently Installed Ubuntu Mate 16.04 0n My outdated PowerBook G4. For the first login, the screen worked fine and was the brightness I expected. But the next few the screen would change brightness ...
0
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1answer
98 views

No control over screen brightness on Ubuntu-Mate 16.04

I'm running Ubuntu MATE on a samsung N210 netbook, which is rather old. I had it running Ubuntu 14.04, till yesterday, and the screen brightness control worked fine since day one. After installing ...
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1answer
93 views

Artificially increase maximum screen brightness

I have my laptop set to maximum brightness, but it's not bright enough. Is it possible to somehow make it brighter?
0
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1answer
270 views

Adjust Brightness 16.04

I've just upgraded to 16.04, and tried to download brightness controller from Ubuntu Software, but I can't find it. I need to reduce the brightness for my eyes' health. Thanks. I'm using a desktop pc ...
5
votes
1answer
721 views

Enable [Fn]+[cursor arrows] on lock/login screen to change volume and brightness

Having a new Acer Aspire E17 E5-773G with Ubuntu 16.04 on it, I experience that the keyboard combinations to adjust volume (Fn + ↑/↓) and brightness (Fn + ←/→) do not work on the login screen or lock ...
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2answers
104 views

Brightness Control

I recenetly installed ubuntu16.04 on my sony vaio VPCEH35en. The brightness control is not working. I have a Nvidia GEforce 410M . I tried to modify the xorg.conf file but ended up with this: ...
1
vote
1answer
72 views

Revert usage of Fn key to control notebook (e.g. brightness, sound)

after upgrading Ubuntu to 16.04 on my Dell XPS 13 (2015) I noticed that the function keys are now "inverted". Before the update I had to press Fn and the corresponding F key at the top to change the ...
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0answers
132 views

Fn+F5/6 Brightness shortcut not working - Asus laptop - Ubuntu 14.04

I have been bothered for a while with this bug of the Fonction key, it works for sound (Fn+F12/11/10) or turn on/off the screen (Fn+F7), but not to adjust the brightness (Fn+F6/5)... After some times ...
2
votes
1answer
913 views

Brightness key not working Ubuntu 16.04 LTS

I've just installed Ubuntu 16.04 on my Lenovo Z400 notebook and everything was working. Today I tried to change the brightness of the screen and it gets dark and I can't go back. Can anyone help me? ...