Questions related to screen brightness.

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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 ...
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1answer
210 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
36 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
45 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
252 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
67 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
80 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
46 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
43 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
50 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
8 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
110 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 ...
0
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1answer
26 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
35 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 ...
4
votes
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
532 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 ...
1
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1answer
126 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 ...
0
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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
60 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
27 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
181 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
66 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 ,...
0
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0answers
167 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 ...
0
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0answers
22 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 ...
0
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0answers
121 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....
0
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2answers
193 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 ...
0
votes
1answer
88 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
28 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 / ├─...
0
votes
1answer
57 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
48 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 /etc/init/...
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0answers
27 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.
0
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0answers
62 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 ...
0
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0answers
21 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
123 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 settings....
0
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0answers
37 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, ...
0
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1answer
39 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
vote
1answer
56 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 ...
0
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0answers
134 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... ...
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vote
1answer
168 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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1answer
26 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
26 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 ...
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1answer
65 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 ...
1
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0answers
75 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
23 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
votes
1answer
71 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
26 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 ...