Questions related to screen brightness.

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0answers
7 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....
0
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1answer
19 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
11 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
10 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
18 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
42 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
votes
1answer
28 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. ...
0
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0answers
25 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 ...
0
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0answers
18 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
19 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 ...
5
votes
3answers
109 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 ...
0
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0answers
28 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
votes
1answer
31 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 ...
1
vote
0answers
40 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 ...
3
votes
2answers
138 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
votes
2answers
55 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 ...
-1
votes
1answer
66 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 ...
0
votes
2answers
109 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 ...
0
votes
0answers
22 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 ...
0
votes
0answers
66 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 ...
0
votes
0answers
37 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 ...
0
votes
0answers
26 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 ...
0
votes
0answers
61 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-...
1
vote
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 ...
0
votes
0answers
41 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 ...
0
votes
0answers
21 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
votes
1answer
82 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 ...
1
vote
1answer
77 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
votes
1answer
184 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
252 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 ...
0
votes
2answers
96 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
54 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 ...
1
vote
0answers
104 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 ...
1
vote
1answer
560 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? ...
0
votes
1answer
59 views

How to link the system event brightness up/down to the correct brightness file

I have a ASUS UL30VT and just installed Ubuntu 14.04 LTS. The screen brightness was at level 0. Attempt 1: so I navigated to find the screen brightness slider under System Settings>Brightness&...
0
votes
1answer
33 views

How to control brightness on toshiba laptop?

I have toshiba satellite L745 with nvidia GEFORCE graphics card. I installed nvidia server setting from ubuntu software center. Still I can't decrease the brightness. When I use the function key to ...
0
votes
0answers
22 views

How to completely reset xrandr

Is there any command which completely resets all settings of xrandr? I have checked this and this but the command xrandr -s 0 does not reset brightness.
1
vote
1answer
51 views

screen brightness keys stopped working — ubuntu 14.04 LTS — HP notebook

I installed Ubuntu 14.04 LTS last week on my HP Pavillion DV6700 notebook. It was working perfectly until last night when I turned on the notebook and noticed the screen brightness was set to the ...
0
votes
1answer
95 views

App to adjust gamma in ubuntu 16.04

Is there an app that can adjust gamma/brightness/contrast for ubuntu 16.04? xgamma doesn't have any effect. Thank you Edits *-display:0 description: VGA compatible controller ...
1
vote
1answer
82 views

I can no longer completely turn off the screen by decreasing the screen brightness to zero in 16.04

Sorry if this is vague and not nearly as technical as most other questions here, but I'm a pretty new ubuntu convert. When I'm in hurry I've been turning off my screen just by holding fn and f8 to ...
3
votes
1answer
83 views

Auto dimming laptop keyboard backlit when idle

On Windows 10, my laptop's keyboard backlit automatically turned off after a minute or so of inactivity. As soon as any activity occurred, they turned back on. On ubuntu, if I run the following echo ...
5
votes
3answers
3k views

Can't change brightness in Ubuntu 16.04 LTS

I'm new to linux systems in general (I'm using Ubuntu 16.04 LTS) and I'm having difficulty in changing the brightness of my notebook. When I use the Fn+F8 or Fn+F9 the brightness bar shows up but ...
0
votes
1answer
28 views

Need the drivers for a laptop model ASUS G752VL (Republic of Gamers) running Ubuntu 15.10

I've changed the hard drive in my computer from a Windows-loaded one to another one loaded with Ubuntu 15.10 64-bit. However, after I have installed Ubuntu, I've noticed The trackpad doesn't work ...
3
votes
2answers
117 views

Change brightness

I believe it's a big question among asus users, cause i've found tons of questions about "why do my backlight don't change with fn keys??". Well... after to much researching and testing (I'm a linux ...
1
vote
1answer
161 views

Ubuntu gnome 16.04 xenial xerus - Changing Automatic Brightness Response Time

I am using Ubuntu gnome 16.04 LTS version. I love automatic brightness feature but it is getting changed so quickly, so responsive, so fast response, it is so annoying. How can I change the ...
2
votes
0answers
252 views

I can't lower the backlight/brightness

Why I can't control the brightness/backlight level? At the first: Notebook Positivo BGH - C500 Series. Processor: AMD C60 series (dual core 800 mhz-1ghz) GPU: Radeon HD 6290 (worked with fglrx/...
1
vote
0answers
83 views

Brightness Fn key slow to change N3700 ( I've tried everything! )

I have an Acer R3-131T with the new Broadwell Intel Pentium N3700. My brightness works if it is adjusted in the system settings but when I use the combo "fn+brightness key (in this laptop are the ...
0
votes
1answer
108 views

Brightness function key resulting in flickering

Dell Inspiron n5110, I upgraded from Trusty to Xenial yesterday.. The one issue I can't seem to get past or over is that when I use the Fn keys to change the brightness, it results in random ...
0
votes
0answers
77 views

Automatic screen brightness in Ubuntu Xenial

As I understand, Unity in Xenial is Gnome 3.18 for the most part. This version of Gnome has a built-in automatic screen brightness control. I've tested it in Fedora 23 and it works excellent. However, ...