Questions related to screen brightness.

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0
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0answers
111 views

Ubuntu 14.04 second display brightness problem

Few days ago I have setupped Ubuntu 14.04. I'm using laptop and second monitor via HDMI cable. Now every about 1-2 minutes my second monitor's brightness changes (increase after that decrease and ...
0
votes
1answer
234 views

Brightness keys not working and no obvious interface for adjustment either

New to Ubuntu and so far pretty happy with it but one niggle is the brightness controls do not seem to work. I have looked at fixes on here + google but nothing seems to get it right. Mostly effecting ...
0
votes
2answers
823 views

Change brightness on Asus G53JW with Ubuntu 14.04

I have an Asus G53JW and I can't manage to change the brightness anyhow (fn hotkeys are not working). I used Debian for 6 months and had the same issue and never found I way around this. I did ...
5
votes
2answers
2k views

Error when running gtk-redshift

I'm getting this error when I run gtk-redshift from the CLI (it just doesn't start if I start it from the GUI): (process:3862): GLib-GObject-CRITICAL **: g_type_instance_get_private: assertion ...
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0answers
114 views

How do I change the default brightness on my computer?

Every time I turn on my computer the brightness is automatically set to the highest possible setting. Is there a way I can change this and make the default brightness setting darker?
0
votes
1answer
3k views

Xubuntu 13.10 Screen Brightness Fn Keys

I have a Samsung Series 9 NP900X3C, which has a Intel HD Graphics 4000 chip. When I use the the Fn keys for changing the brightness, it shows me a nice OSD and sets the value in ...
1
vote
2answers
377 views

Brightness keys no longer work

My Fn+F8 and Fn+F9 keys to change the screen's brightness appear to no longer work on my Thinkpad laptop. # ls /sys/class/backlight/ thinkpad_screen Some guide told me to make this: # cat ...
0
votes
2answers
628 views

No brightness control in Ubuntu 12.04, Lenovo V570 [duplicate]

I have been struggling now for an inordinate amount of time trying to get the brightness adjustment working in Ubuntu. I am running Ubuntu 12.04 on a Lenovo V570 Laptop. I have tried all of the ...
5
votes
0answers
2k views

Can't control laptop screen brightness after upgrading to 14.10 [closed]

My brightness is stuck at 100% when I have the power cord plugged in, and using the hot keys to change the brightness, or changing the brightness through the system brightness app does nothing until I ...
0
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0answers
56 views

lenevo g580 touchpad sometimes stop responding Ubuntu 14.04 64bit

My laptop touchpad won't work and only external mouse is working any way to install drivers or something that can resolve this issue ? Somebody would like to give auto script or something to make it ...
1
vote
1answer
792 views

Brightness and actual backlight mismatch after reboot

This is not a duplicate of this or that! The problem in detail The brightness hotkeys works well in increasing or decreasing the brightness, but if the brightness is less than 100%, after a reboot ...
1
vote
1answer
738 views

Fn keys for brightness not working on Asus X551MAV­-SX366GB

Brightness should be controlled by pressing Fn + F5 and Fn + F6. Nothing happens when I press these keys. My computer is a Asus X551MAV­-SX366GB and I'm using Lubuntu 14.04
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0answers
58 views

FNKey Brightness - Change Behaviour

When I change my screen brightness using FN keys in Unity or other DEs, the brightness changes instantly. It is very sudden. But when I use xbrightness -dec 10 the change is more soften. Is there any ...
2
votes
2answers
831 views

How do I get brightness controls working on a Sony VAIO Fit 15E?

I have a problem with my brightness setting. When I decrease brightness to 1 and I reboot the computer, it reset to maximum brightness value. I tired to adjust it and decrease it again to 1. Why the ...
0
votes
1answer
99 views

Unable to change brightness using after root access

Case-1 Recently I read a question(Brightness is reset to Maximum on every Restart). Then I opened up my terminal and typed out following command- sudo echo 200 > ...
0
votes
0answers
32 views

Intel video setting always max nvidia

Every time I restart my computer brightness goes to max. Does anybody have idea how to brightness be the same as I left it before shutting down.
0
votes
1answer
184 views

Slow Performance…Hard drive Problem?

I had my laptop run out of battery twice in the last two weeks. I went to go start it right after plugging it back in, and it hung on the "Ubuntu" screen with the little dots. I started it in the ...
1
vote
1answer
321 views

Any way to enable dynamic/automatic brightness adjustment?

My Lenovo ThinkPad X201 Tablet has a very bright screen (400 nits!), which is good for when objects on the screen are dark (say a night scene in a movie), but it is of course very blinding when ...
1
vote
2answers
82 views

How to reduce LCD brightness if intel_brightness is unistalled?

tried echo,xrandr and even xbacklight couldn't reduce backlight of my screen. Can anyone suggest any other way?
0
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0answers
273 views

acpi_backlight=vendor not working

I installed Ubuntu 14.04.1 and the screen just isn't bright enough. I've read on the forums that adding acpi_backlight=vendor to the grub will make your screen brighter. After updating the grub and ...
1
vote
1answer
246 views

Brightness is reset to maximum after waking up from suspend or lock screen

This question is somewhat related to this question: Brightness is reset to Maximum on every Restart Basically, I modified /etc/rc.local to set the brightness, as detailed in this answer, so on ...
0
votes
2answers
422 views

Asus N56JR laptop, can't change screen Brightness using Function Keys

I have an Asus N56JR laptop with Nvidia GeForce GTX 760M graphics card, running Ubuntu 14.04 LTS. When I check what graphics I use for brightness it says "Intel". I have tried using commands to ...
0
votes
0answers
81 views

Brigthness Display and Power Management

Please help. I'm using Ubuntu Gnome 14.04LTS, I need to tweak my Brightness Display to consume long battery life. I want to have 50% Brightness Display when I'm Unplug and 100% Brightness Display when ...
0
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0answers
62 views

Brightness and Power management

I'm using Ubuntu Gnome 14.04LTS. I want to tweak my Brightness setting to consume long battery life.I want to have 100% brightness when Im on Plug and 50% brightness when Unplug However when I go to ...
2
votes
2answers
6k views

How do i make screen dimming work in ubuntu 12.04 (beta 2)

I recently installed Ubuntu 12.04 (beta 2) on my HP mini 110-4117, but I cant control screen brightness. The Fn + F2 , Fn + F3 keys don't work. System Settings > Brightness and Lock doesn't provide ...
4
votes
8answers
41k 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 ...
0
votes
2answers
126 views

Brightness Problem

Hello there Linux user I am a new user and I don't know how to turn down my brightness of my laptop when I change it with the keys it show on the screen going down but the screen is not dimming I ...
0
votes
0answers
96 views

Acer Aspire 4820t brightness fn-keys skip steps

My acer adjusts brightness 3 steps at a time. I've used solutions from: Why does my Thinkpad brightness control skip steps? I've disabled the video driver from adjusting brightness: sudo sh -c 'echo ...
0
votes
2answers
122 views

How to write a script which automatically presses `Fn + F3` button on my keyboard

I am struggling with screen brightness reset issues . It resets to 100% on every reboot. I have tried searching for solutions but none of them worked[including xbacklight ]. Since I can change ...
0
votes
1answer
422 views

Fn keys can't adjust brightness MATE desktop

I just installed Ubuntu 14.04 and removed Unity and installed MATE. Now, the Fn keys on my keyboard can't adjust brightness. Here's the thing that makes it extra extr confusing: my brightness worked ...
7
votes
5answers
3k views

Macbook Pro boots with full screen brightness and keyboard backlight

I have dual-booted my Macbook Pro with Ubuntu 12.04 . Whenever i log-in to Ubuntu, it does so with full screen brightness and keyboard backlight at full . How do i get rid of this? How can i tweak the ...
0
votes
4answers
1k views

how to adjust screen brightness in ubuntu 14.04?

I'm new to Ubuntu, I am unable to alter the screen brightness in my laptop, it is always 100%. Laptop is Acer Aspire 5740, Graphics/Chipset/VGA all are by Intel. The Laptop has a keyboard shortcut, ...
0
votes
4answers
5k views

How do I adjust the brightness on a Toshiba Satellite L750/L755?

Can you please help me ? I tried everything I found and nothing worked. For example, I modified grub configuration file, installed xbacklight and tried setpci command.
1
vote
0answers
60 views

Brightness controls buntu 14.04 / Dell Inspiron

My laptop keyboard brightness controls do not work after the screen has been turned off by the power management - logging of and back on brings back the brightness controls. Similar behaviour occurs ...
11
votes
4answers
11k views

Screen brightness isn't taking effect on a Lenovo Z570

My Lenovo Z570 has two GPU's, nVidia and Intell. Brightness control has no effect what so ever over the screen brightness, and because I've had some major issues in the past when I was trying to ...
3
votes
6answers
24k views

Make xconf configuration permanent

I edited the xconf file, and added this line to device section: Enable brightness control=1 Now I am able to adjust brightness, but after every restart the brightness setting change back to 100%. ...
2
votes
1answer
171 views

Brightness stuck at full after suspend HP Pavilion G6 12.04

I have an ongoing problem with my linux install where brightness seems to get stuck at full after my laptop suspends. Before suspend, the hotkeys work fine. After suspend the hotkeys still bring up ...
0
votes
0answers
62 views

How do I retain screen brightness settings after a reboot on Ubuntu 14.04?

I would like to find a way to get Ubuntu to retain the screen brightness settings on my laptop, so that after I reboot, the brightness will not go back up too 100%. Is there a way to do this? Any and ...
1
vote
1answer
225 views

How to enable notifications while changing brightness and/or volume?

I'm using Ubuntu Gnome 13.10 (Gnome Shell 3.8). When I change the volume or brightness via hotkeys or my volume +/- buttons on my keyboard I do not get the notification in the middle of the screen. ...
0
votes
0answers
83 views

Function buttons not working properly on Ubuntu (HP Sleekbook)

I have a few problems regarding my function buttons, so far the only function button working is the volume, it works fine. But I have some issues with the others. Brightness button doesn't work ...
0
votes
1answer
50 views

Brightness was working but I reinstalled drivers

In the morning only buttons didn't work, now even through the settings. I did few updates today and as a result I had to reinstall drivers. Now I cannot change my brightness in any way.. 14.04 nvidia ...
0
votes
1answer
330 views

Cannot change screen brightness on Ubuntu 14.04 on Lenovo G580

I installed ubuntu 14.04 on Lenovo G580. My screen brightness remains at maximum(hotkeys work). I followed a previous post to modify grub: GRUB_CMDLINE_LINUX="" to this: GRUB_CMDLINE_LINUX="quiet ...
11
votes
1answer
912 views

How to disable KDE's brightness OSD?

I am using lightum to automatically control the screen's brightness depending on the surrounding light (on a Retina MacBook Pro). The problem is, though, that KDE picks up the change and displays the ...
0
votes
0answers
135 views

Brightness wont turn down?

I've had a few operating systems on my laptop in the past couple of months including alot of Ubuntu based ones. One thing Ive had a problem with in all the Ubuntu based systems is that I can't turn ...
0
votes
1answer
404 views

Why is Ubuntu 14.04 running slow on my Asus Zenbook UX302 LG? + brightness issue

It's a fresh install alongside Windows 8.1. I have already tried to modify the grub file by adding acpi=off but it doesn't speed up things. The machine has an i7-4500U processor, 8 GB of RAM and ...
3
votes
3answers
2k views

How to prevent Ubuntu from changing screen brightness?

I have recently installed 12.04 on ASUS-K53SV-V300. I can change the brightness on start-up with: echo 0 > /sys/class/backlight/acpi_video0/brightness >> /etc/rc.local or manually by Fn ...
0
votes
1answer
351 views

Issues on ASUS X550LC (after installing ubuntu)

I've installed ubuntu 14.04 on my ASUS X550LC. Here I've found some issue: Bluetooth is not working. Brightness is going 100% after every reboot. Brightness and network controlling shortcut key is ...
1
vote
0answers
95 views

Apple Cinema LED Display: using regular brightness controls?

I have a Dell Latitude E6430 laptop, running Ubuntu 14.04, connected to a 27" Apple Cinema LED Display (which works fine). By tweaking the appledisplay kernel module a little bit, I can even get ...
12
votes
5answers
12k views

What commands will change my screen's brightness?

I'm trying to re-keybind some of my function keys as I never use them for multimedia purposes, however I'm not sure as to what command I'd need to put it to increase/reduce the brightness, I'm talking ...
0
votes
1answer
117 views

How to adjust Screen brightness of Acer Aspire 573z?

I have tried many thing given on internet and also on Ubuntu but nothing works.