Questions related to screen brightness.

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0answers
60 views

How to increase Kubuntu 14.04 brightness range?

Hold your horses!. If you are hurrying to flag this as a duplicate of this question or this question, none of those have an answer to what is asked here. Thanks for the attention though. In ...
8
votes
3answers
3k views

Ubuntu 14.04 Brightness issue with nvidia Quadro

I recently upgraded from Ubuntu 13.10 to 14.04. Everything is fine, except the brightness of my laptop screen. When I change the brightness the screen simply does not respond. I figured this was a ...
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0answers
12 views

Run script when connecting power cord? [duplicate]

I have this really annoying problem where my screen's brightness goes to maximum whenever I connect the power cord to the laptop. Is there a way to run a script every time this happens so I can lower ...
0
votes
1answer
128 views

Flex 2 not waking up from sleep in Ubuntu 14.04, brightness controls also not working

I have a Lenovo Flex 2 with AMD A6 CPU and 4 GB RAM. It came pre-installed with Windows 8.1. I installed Ubuntu 14.04 on it (single boot). But I am facing problems as the laptop does not wake up from ...
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0answers
69 views

Screen brightness issue

I am having a problem with Ubuntu on my Netbook (Samsung NP-NC108-A09ID). The problem is: When I try to change the brightness to a higher or lower level, nothing happens.
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0answers
38 views

Brightness is not decreasing in ubuntu 14.04 in my hp laptop

My laptop is d006tu and d009tu,when I am using Ubuntu 14.04 LTS I am unable to use function keys to control brightness?
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2answers
198 views

Ubuntu 14.04 stuck at console mode after graphics driver update

Actually I wanted to correct the well known Ubuntu brightness issue as addressed in this YouTubeVideo In essence, the guy says to change the Nvidia driver from open source to any other proprietary ...
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0answers
20 views

Volume shortcut keys working; brightness shortcut keys not working [duplicate]

I recently installed Ubuntu 14.04 on my Toshiba L840D with an AMD A8 CPU and an AMD Radeon HD 7640G GPU. Everything works as expected, except for the brightness shortcut keys. When I press F2 or F2 ...
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0answers
94 views

Screen Brightness Hotkeys with NVIDIA Graphics Card

I just installed the Ubuntu 14.04 and I'm loving it. I've used other versions before, but it's getting better and better. But there's one problem: screen brightness. I use an LG R570 laptop, with an ...
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0answers
25 views

Brightness resets after changing it manually

Every time I use the shortcut keys or xbacklight to change my screen brightness, it reverts a second later to no backlight. For example, I run xbacklight -set 50 and the screen brightens for a second ...
0
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0answers
85 views

Low brightness Ubuntu 14.10

I have an Asus X550LN with NVIDIA 840m + Intel HD 4400 but since i've installed ubuntu 14.10 the brightness is too low although in the system settings is at maximum. Some help? Fn+f5 or Fn+f6 works ...
8
votes
1answer
767 views

Display problem when adjusting brightness in ubuntu 12.04

Recently I installed Ubuntu 12.04 on my Dell 1554 laptop. I was adjusting my screen brightness when this happened : this has become a recurring problem which is really annoying. I also want to ...
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2answers
2k views

Ubuntu 14.04 LTS: FN-Brightness Key Stopped Working

Hello dear Ubuntu Community, After i installed some Ubuntu Updates on my PC,my FN-Key stopped working. (But i can still change it in the System settings. I tried many ways to fix it trough the ...
4
votes
1answer
432 views

Unable to change screen brightness with hotkeys on Ubuntu 14.10

Just upgraded to Ubuntu 14.10, and now my brightness keys aren't working. Is there a fix for this? I suspect that Linux kernel 3.16 is the culprit...
0
votes
2answers
192 views

How to set brightness level even lower than default minimum? [duplicate]

I am an ex-Windows user, I noticed that minimum level of screen brightness on ubuntu is way brighter than minimum level on windows when I was using it on the same hardware. I was wondering if I can ...
0
votes
1answer
107 views

Change default behavior of Fn+Funtion key

I have the latest version of Ubuntu 14.04 installed on my Toshiba Satellite C55D-B5212. All of the Fn key combinations work correctly except the brightness down and brightness up ones (Fn+F2 and ...
5
votes
3answers
3k views

Change the brightness adjustment interval

So whenever I hit my dim/brighten keys on the keyboard, a notification bubble pops up with the screen brightness. All that's fine, but I would like to be able to change how much the brightness changes ...
0
votes
1answer
61 views

Low brightness Ubuntu 14.10

I have an Asus F550LNV-DM092H with NVIDIA 840m + Intel HD 4400 but since i've installed ubuntu 14.10 the brightness is too low although in the system settings is at maximum. Some help?
0
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0answers
151 views

14.04 LTS on Toshiba Satellite C75D-B. Brightness, WiFi, Fn-keys control and Suspend problems

This is a new laptop that I just bought. Came with Windows 8.1, now is a dual-boot. Sound Controls and Mute work with F9, F10, F11 like they do in Windows, but F12 for WiFi, F2 and F3 for brightness ...
0
votes
1answer
68 views

laptop monitor brightness always maximum upon charging

My laptop monitor brightness is set to maximum whenever I connect it to charging. I have gone to the brightness settings and changed this, but the problem repeats when I charge my laptop again...what ...
1
vote
1answer
196 views

Laptop brightness too low on Ubuntu 14.10

recently I switched to Ubuntu Gnome 14.10 64 bits on my laptop and I'm having some issues with the brightness. At first I couldn't change with the hotkeys, but I have already fixed it. The problem now ...
0
votes
1answer
610 views

Ubuntu 14.04 brightness problem (Lenovo Z500)

My brightness controls weren't working before but I didn't really care, but somehow I lowered my screen brightness while downloading league through playonlinux. Now the brightness controls aren't ...
0
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0answers
26 views

Boots to black screen only from hard drive [duplicate]

I have an ASUS X200MA that came with Windows 8.1. I got it to dual boot with Ubuntu 14.04 and I have used it for months. It suddenly ( perhaps after running a windows update ) started turning off the ...
0
votes
1answer
192 views

Screen Brightness on Acer AspireV: bar appears, brightness doesn't change

Using 12.04 on an Acer Aspire V5-561-9410. When I use the function keys to modify screen brightness (or use any solutions I've found here to this problem like the one found here or here), I see the ...
0
votes
1answer
201 views

Ubuntu 14.04 LTS Brightness Problem

Yesterday I downloaded Ubuntu and installed it on my laptop (Sony Vaio PCG-71811M), with Windows 8.1 dual boot. I really liked Ubuntu, and i don't think I want to delete Ubuntu and turn back Windows. ...
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0answers
25 views

Turning the brightness down makes screen brighter

My brightness slider is the wrong way around! For example when I drag the brightness slider to its lowest my display is at full brightness and when I drag it further it goes dimmer. I am running ...
0
votes
0answers
160 views

How to stop brightness changes (screen dimming) on low battery?

Ubuntu 14.10 automatically adjusts screen brightness on low battery. It does so despite explicitly being set not to. How to prevent this behaviour? I'd like the brightness to stay on the manually ...
2
votes
4answers
168 views

Is there any brightness control for desktops?

I'm using Ubuntu Trusty tahr and I've noticed that there is no brightness control (like a slider), In windows I'll use Intel's graphics media accelerator to reduce brightness but here it looks ...
28
votes
9answers
50k 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 ...
7
votes
6answers
23k views

Screen brightness not working

I use Ubuntu 12.04 on my Sony Vaio(VPCCW2HGX). At the first times, brightness control works well, but after the activating additional drivers(nvidia accelerated graphics driver) brightness control ...
11
votes
4answers
6k views

Brightness control on Awesome windowing manager

I have just installed Awesome WM and I have no options to change the screen brightness, and also its shortcut doesn't working. Any one can help?
3
votes
6answers
8k views

Brightness control doesn't seem to work on a Toshiba Satellite M115 laptop

I have Ubuntu 12.04 LTS on a Toshiba Satellite M115 laptop. The brightness control doesn't seem to work with the "brightness and lock" setting or fn+f6 and fn+f7 (which usually works in Windows). How ...
3
votes
0answers
125 views

Lowest brightness setting turns backlights off

I am running Ubuntu 14.10 on a Laptop. When I turn my brightness to the lowest setting it actually turns my backlights off and my entire screen goes black as if my computer was turned off. I have ...
4
votes
4answers
6k views

14.04 Asus g56jr Fn + Brightness control

I have recently installed Ubuntu on my new Asus G56Jr laptop. I noticed that despite all the other Fn+fX keys are working, the screen brightness does not. I have already tried editing the grub, as ...
0
votes
1answer
96 views

Brighness controls on Toshiba Tecra

The brightness controls do not have any visible effect on my Toshiba Tecra W50. I tried every combination of acpi_brightness=vendor and acpi_osi=Linux to no avail. How can I change my screen's ...
0
votes
1answer
184 views

Screen dim while brightness set to max on Xubuntu 14.04 everytime display turns off

I used to have an issue where every time my laptop would return from suspend, the screen was fully dim (as if brightness was at a minimum) even though the brightness setting was set to maximum - so I ...
0
votes
1answer
53 views

Brightness control turns off my monitor

When I press the keyboard combination to lower my brightness i.e. Fn+F2 my screen turn off and to turn it on I have to press brightness low and then brightness high button one after another. Can ...
2
votes
1answer
383 views

Dell Chromebook 11 - unable to set backlight and /sys/class/backlight/ folder is empty

I have installed Lubuntu on my Dell Chromebook 11 and everything works except for the backlight. Can't set the backlight with the brightness keys, neither with xbacklight,xdotool or any other GUI ...
5
votes
1answer
210 views

Can't change brightness after disconnecting second monitor

When I boot up with 2 monitors, or when I connect the second monitor to my laptop, I can change brightness of the laptop screen in the usual sense. After disconnecting the second monitor, when I ...
0
votes
0answers
18 views

Replacement Screen problem

I had a broken screen and I replaced it myself and now when ever I turn on the laptop it boots to Ubuntu and when it's booting the screen it gets brighter and brighter and becomes so bright that can't ...
4
votes
5answers
6k views

Brightness Adjustment on Desktop Computer

I have Ubuntu 12.10 I need an application/software that can increase and decrease my brightness. I know I can do it through my pc monitor but I don't want that. I want to control it through a ...
4
votes
6answers
4k views

Can't adjust brightness on a Sony Vaio T13 ultrabook

I recently installed Ubuntu 12.04 alongside Windows 7 in a Vaio T13 ultrabook. I cannot use the the Fn+F4 or Fn+F5 to change the brightness. The bubble appears indicating that brightness is being ...
0
votes
0answers
78 views

How can I disable screen auto brightness in 14.10?

I have a Samsung 730u3e with hybrid radeon graphics, that comes with sensor(s) for screen and keyboard brightness. The keyboard auto brightness works very well, I can increase/decrease or turn off as ...
2
votes
3answers
867 views

Laptop brightness

I have just installed Ubuntu 13.10 and trying to adjust my laptop screen brightness. My laptop Dell studio 1558 has a key to change the screen brightness, though I reduced brightness to zero, I still ...
0
votes
0answers
16 views

customize ubuntu with bash scripts - never turn the screen off [duplicate]

I'd like to disable the screen from dimming automatically. It is manually done in Settings > Brightness & Lock > Turn screen off when inactive for: Never. I want to do it with a shell ...
4
votes
2answers
248 views

Ubuntu brightness indicator stops working upon laptop open/close

So I installed Ubuntu 14.04 on a 2011 edition MacAir, and I had the common problem of being stuck with either full screen brightess or pure darkness, with no options in between. I installed ...
0
votes
2answers
166 views

Lenovo Thinkpad L Brightness Level Intervals

I'm using Ubuntu 14.04. Everything worked out of the box on my L440. The only thing that bothered me was the brightness levels. I can change it by pressing fn + F5 or F6, but there are only a total of ...
1
vote
1answer
193 views

Lubuntu Display brightness

Just installed Lubuntu 14.10 on my machine. I cannot change the display brightness. I have a slider in my power settings but it does nothing. Cannot post screenshot of the slider because of no rep ...
0
votes
1answer
322 views

Ubuntu refuses to boot with acpi_backlight=vendor

I bought a Dell Inspiron 14 5000 series and dual booted Windows 8.1 and Ubuntu GNOME 14.04. The brightness would not change, so I booted with kernel parameter acpi_backlight=vendor and it worked. I ...
0
votes
2answers
54 views

Ubuntu 12.04 LTS is not booting after altering a text file in gedit, how to fix?

After failing to adjust my screen brightness in Ubuntu in various ways, I tried the following guided by an answer in askubuntu. I opened the following text file sudo gedit /etc/X11/xorg.conf It ...