Questions related to screen brightness.

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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.
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1answer
56 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 ...
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1answer
118 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 ...
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1answer
95 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 ...
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1answer
106 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 ...
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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 ...
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1answer
34 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 ...
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2answers
130 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 ...
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1answer
199 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 ...
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0answers
307 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/...
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0answers
86 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 ...
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1answer
131 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 ...
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0answers
94 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, ...
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0answers
80 views

SOLVED! 15.10: WiFi blocked/no resume after suspend/no bright hotkeys after upgrade

I have a Samsung Laptop model NP270E4E-K0ACL - Intel Sandy Bridge Mobile Graphics Card - Atheros AR9485 Wireless After a clean installation of Ubuntu 15.10 using an ISO burned image (kernel 4.2.0-16-...
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1answer
64 views

Cannot change brightness in laptop

I am trying to change the brightness of my laptop using xrandr, but I get this error. Here's the segment: janreggie@janreggie-T100TA:~$ xrandr Screen 0: minimum 8 x 8, current 1368 x 768, maximum ...
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0answers
28 views

External monitor and colour adjustment on ThinkPad T440p

I'm new to Linux, and have sorted out inital issues with two exceptions. One is that my ThinkPad doesn't detect my Benq external monitor, either via VGA or miniDSP-to-HDMI. System settings > Displays >...
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1answer
32 views

Display doesnt startup after lock

Whenever I'm not using the laptop I turn the screen off using the Fn+F2 button which eventually reduces the screen brightness to 0. By default the lock screen should start in 10 minutes, after 10 ...
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1answer
42 views

Birghtness control not working on Ubuntu 14.04 on MacBook Pro

I have Ubuntu 14.04 on MacBook Pro and I cant alter the brightness from System Settings (no option there). My graphics card details are as follows. $ lspci | grep VGA 01:00.0 VGA compatible ...
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1answer
62 views

How to prevent eyestrain? [closed]

For the following months, i'm going to work at home and will spend most of my time in front of my computer. Currently, i work on my computer more than 8 hours a day. (10h-14h on screens daily) I've ...
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0answers
26 views

brightness control sometimes dont work after reboot - Intel i915

I don't c a pattern when this happens. Here's some info: sudo lshw -c video *-display description: VGA compatible controller product: 2nd Generation Core Processor ...
0
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1answer
259 views

HP Probook 450 G3 - screen brightness hotkeys not recognized

I've purchased this laptop: T6P76EA#ABF. The hotkeys to increase or decrease screen brightness seems to not being mapped, whatever options I can put on grub command line (i.e. acpi_backlight=video/...
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0answers
38 views

Unsupported brightness interface, laptop doesn't wake up from sleep

I'm using Ubuntu 14.O4 LTS on Lenovo ThinkPad E440. When I power up my laptop, it says something about unsupported brightness, but everything seems to work just fine. How do I get rid of it? When ...
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1answer
47 views

Screen Brightness not changing after installing Gnome Desktop

Well, finally after the latest 15.10 release and Linux 4.2.0 kernel updates in Ubuntu, my ACPI buttons (Fn + F2/F3) are fixed and can change my screen brightness natively (I was previously using hacky ...
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1answer
274 views

adjusting screen brightness Skylake+Nvidia

I have a Santech T67 which is a laptop based on Clevo P640RE. Briefly, the hardware is: Intel Skylake CPU (i7-6700HQ) Nvidia GTX 970m (NVIDIA Corporation GM204M [GeForce GTX 970M] (rev a1), from ...
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1answer
68 views

Brightness problems on ubuntu15.10 for UEFI compatible laptop

I have recently installed Ubuntu 15.10 alongside Windows 8.1 with UEFI compatibility i had to disable nouveau.modeset now i cant reduce my brightness on Ubuntu.
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1answer
25 views

Bright flash when resuming from sleep, ubuntu unity

Hi as the titles says really, I'm getting a really bright flash of the screen pre-suspend, when returning from sleep. Then it will load the lock screen at the brightness level I've set. Any way to ...
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0answers
88 views

Ubuntu 15.10 - FN Keys working in unity but not in gnome shell

Exactly what the title says. More specifically: Volume keys - Working in Unity AND Gnome Brightness keys - Working in Unity Disable touchpad key - Working in Unity The weird thing is that even ...
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0answers
47 views

The backlight brightness always set to full after I turn on my laptop

I have checked the number in /sys/class/backlight/acpi_video0/device/backlight/acpi_video0/brightness is 2, but it always set to full after I install the Nvidia driver, I have to manually adjust it ...
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0answers
22 views

Curious Response to Brightness Keys on Laptop Keyboard

I've been having a small issue with the brightness keys on my HP laptop (dv7 4285-dx). It seems that when I turn the brightness all the way up using the appropriate secondary function keys on my ...
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0answers
44 views

Brightness not working on Lenovo Ideapad Z580 with Ubuntu 15.10

Recently upgraded from 14.04 to 15.10 Brightness control keys worked fine in 14.04 In 15.10 when pressing brightness increase or decrease keys, the screen slider pops up, but the brightness does not ...
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0answers
51 views

Dim screen with transparent black image

The LCD backlighting of my notebook's screen uses PWM to dim the display, and because of this, I experience eye-strain whenever I lower the brightness. Maximum brightness however seems too much in ...
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0answers
12 views

Keyboard flashing instead of dimming

So, I have an ASUS N56VB with ubuntu 15.10 and I encountered a problem a few days ago, my keyboard backlighting that was previously working fine now doesn't respond properly to the bright levels, it ...
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0answers
123 views

Ubuntu 14.04: Problems with nivida driver for Geforce GTX 965M

Sorry for my bad English. I'm from Bremen, Germany. I also have some Problems with my Schenker Laptop W705 with nvidia GeForce GTX 965M. My Ubuntu version is 14.04.4. I have installed the property ...
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1answer
28 views

CF-52 Mk 1 brightness stops at 50%

I used the acpi_osi= trick to make Xubuntu 14.04 work with my newly acquired CF-52 Mk 1 Toughbook. Among other things, this enabled it to control the LCD backlight brightness. This mostly works fine, ...
3
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1answer
41 views

run script when power mode changes

I wrote myself a bash script and when this script is called it changes my display brightness. Now i want to run this script when my ac-adapter is unplugged or the ac-adapter gets plugged in. Where can ...
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1answer
90 views

Brightness control is blocked after reaching minimum

Several days ago I tried to fix a quite popular problem. I have Ubuntu 15.10. In my computer the brightness control keys weren't working. I have added a file /usr/share/X11/xorg.conf.d/20-intel.conf ...
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4answers
678 views

xbacklight is not working (Ubuntu 14.04 LTS)

The problem is that Ubuntu always resets the brightness level to maximum after every reboot. I installed the xbacklight utility, but commands like xbacklight -get or xbacklight -set XX don't work. I ...
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1answer
146 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 ...
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0answers
17 views

Brightness Problem Ubuntu 15.10 (Dell inspiron 5737) [duplicate]

i need help how to fix my laptop Dell Inspiron 5737 brightness being stuck at max, when i press keys on my laptop scale shows that it "works" but brightness remain the same at max and it is killing me ...
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0answers
52 views

Problems with Ubuntu 15.10 Gnome 3.18, can anyone help me?

I have some problems/questions with my Ubuntu installation: How to enable smooth transition when changing brightness with the Fn keys? With xbacklight, its good, but i can't change the default ...
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0answers
67 views

xbacklight and xdotool do not work on desktop Ubuntu 14.04

I have Ubuntu 14.04.3 LTS on a desktop. I tried the following and none of them worked: $ xbacklight -dec 10 $ xdotool key "alt+r" XF86MonBrightnessDown $ echo 400 | sudo tee /sys/class/backlight/...
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0answers
29 views

Running Ubuntu 14.04 on an Acer C720, having issues with the brightness

The brightness doesn't seem to adjust at all, neither with the system settings or the chrome book keys. I'm a bit new to Ubuntu so please explain carefully. I found out that this system has an Intel ...
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2answers
204 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
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1answer
59 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
71 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
180 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
26 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
128 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 kernel....
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2answers
203 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
98 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 ...