Questions related to screen brightness.

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1answer
24 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 ...
0
votes
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 ...
0
votes
1answer
18 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 ...
1
vote
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?
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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 ...
0
votes
3answers
4k views

Brightness options in Ubuntu 12.04 desktop missing

I am unable to change the brightness of my desktop screen using this path. System settings{top right corner of the screen)>Under Personal Brightness & lock.No option to change brightness is ...
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4answers
3k views

Cannot change screen brightness on my lenovo z 570?

I am not able to change the screen brightness on lenovo z570. Even the function keys for the brightness are also not working. Any idea ?
27
votes
6answers
17k views

Is there a software utility to adjust screen gamma/brightness/contrast?

I use to work at night and it is eye-hurting to watch at lightbulb-bright screens (I've got two - laptop's built-in panel and an external 18-inch CRT) in a dark environment. So I adjust my screens to ...
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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 ...
0
votes
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 ...
2
votes
1answer
5k views

Fn keys for Brightness not working on Toshiba Satellite L755

I am running Ubuntu 12.04 and I love it! The only problem is the keys for my brightness, F6 and F7, does not work when I am on battery power or AC power. It randomly works after I am idle for a while ...
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2answers
7k views

How to adjust brightness on Lubuntu?

I can't adjust my screen brightness. Indeed, I can't find this option in my system parameters. I am using Lubuntu 12.04. Thank you for your time :)
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4answers
37k views

Brightness fn key shortcut doesn't work on ASUS laptop

The brightness shortcuts via fn key don't work. I tried each solution from this answer and its comments. After editing /etc/default/grub file I rebooted. GRUB_CMDLINE_LINUX="acpi_osi=Linux" ...
1
vote
2answers
4k views

Ubuntu 14.04 brightness keys don't work anymore after dist-upgrade on Thinkpad L430

I just updated my Ubuntu system from 13.10 to 14.04. After having fixed GRUB which broke on upgrading, I run into certain other problems. One of them is that the brightness adjustment keys of my L430 ...
0
votes
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 ...
2
votes
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 ...
0
votes
0answers
23 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
votes
1answer
69 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 (...
11
votes
2answers
233 views

Disable automatic brightness according to content in Ubuntu 14.04

I am running Ubuntu 14.04 LTS on a Dell Latitude E3440 laptop. My problem is that screen brightness automatically changes depending on content. This means that the screen gets brighter when the ...
1
vote
1answer
83 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 ...
0
votes
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).
11
votes
5answers
22k 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 ...
0
votes
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 ...
0
votes
1answer
4k views

Disable automatic screen dimming

I currently have three computers running Ubuntu. With two of them, If I don't touch the mouse or keyboard... nothing happens. However, with the third, the screen gets dimmer after about 60 seconds of ...
33
votes
14answers
64k views

Unable to change brightness in a Lenovo laptop

Brightness adjustment keys <Fn + ⇑/⇓> have no effect (although they are recognized by the environment), and I can't change the brightness using GUI tools as well. This seems like a problem in ...
1
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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
vote
1answer
14k views

Unable to adjust brightness in Ubuntu/Xubuntu/Lubuntu13.04

I've recently upgraded to Xubuntu 13.04 and noticed that I'm unable to use the brightness keys to adjust the brightness of my screen. I've tried just about everything this thread suggest and I'm still ...
7
votes
4answers
36k views

How to make my screen brightness not change when I plug my laptop in

I do not want my laptop to change brightness when my laptop power is plugged in or unplugged. I set my brightness based on how bright my surroundings are. If I am in a dark room, I set my brightness ...
1
vote
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 ...
6
votes
4answers
4k 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
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 + ...
1
vote
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....
0
votes
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 ...
0
votes
0answers
21 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 ...
0
votes
2answers
903 views

How can I change brightness on Asus Zenbook ux305?

fn+F5 and fn+f6 keys do not change the brightness on my Asus Zenbook UX05. Thanks to this website I found that command: xrandr --output eDP1 --brightness 0.5 reduces brightness to 50% of the ...
0
votes
0answers
18 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 ...
2
votes
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 ...
0
votes
0answers
74 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
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. ...
0
votes
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 ...
0
votes
1answer
61 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
votes
0answers
36 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 ...
0
votes
0answers
61 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
8answers
53k views

How do I adjust the screen brightness on an Acer Aspire One D270?

My system specifications are: Ubuntu 12.04, 64-bit, Acer Aspire One D270, Intel Atom CPU The usual brightness increase/decrease key combination using Fn key doesn't work in Ubuntu as many pointed out....
24
votes
4answers
6k views

Use webcam to sense lighting condition and adjust screen brightness

Is there a way to have my webcam sense lighting conditions and adjust screen brightness accordingly?
5
votes
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 ...
1
vote
2answers
167 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 ...
1
vote
1answer
148 views

Automatically reduce brightness on battery in Ubuntu 15.10?

How can I automatically reduce brightness when I unplug the AC in Ubuntu 15.10? I tried modifying dconf-editor settings as suggested here, http://askubuntu.com/a/312619/511925, but there are no ...
0
votes
2answers
206 views

Backlight won't turn on after suspend on Macbook air (Early 2015)

After suspending my macbook by closing the lid the backlight will not turn back on however the rest of Ubuntu resumes normally. The screen brightness setting also has no effect on the screen ...
0
votes
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 ...