Questions related to screen brightness.

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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
9 views

Wake from suspend and brightness/backlight control not working after closing lid, No additional drivers available

I have a Lenovo ThinkPad E460 which I recently bought. I installed Ubuntu GNOME flavor and the latest version (2014-04). Each time I close the laptop lid, and reopen it, a blank screen appears. This ...
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0answers
7 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
16 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
13 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 ...
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0answers
35 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
9 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] ...
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0answers
11 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
16 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 ...
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0answers
37 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
52 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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1answer
86 views

Adjust Brigthtness 16.04

I've just uploaded to 16.04, and tried to download brightness controller from software but it's not there. I need to get down the brightness for my eyes health. Thanks. I'm using a desktop pc with ...
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1answer
42 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
65 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: ...
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1answer
42 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
59 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 ...
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1answer
269 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? ...
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1answer
51 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 ...
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1answer
31 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 ...
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0answers
16 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
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1answer
47 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
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1answer
59 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
72 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
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1answer
71 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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3answers
1k 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
21 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
94 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
112 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
154 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 ...
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0answers
61 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
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1answer
77 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
63 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
51 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 ...
0
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1answer
50 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
21 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
28 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 ...
0
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1answer
41 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
46 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 ...
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1answer
166 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. ...
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0answers
30 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
44 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
205 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
65 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
24 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
64 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
45 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
40 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 ...
2
votes
0answers
48 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 ...