Questions related to screen brightness.

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0
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1answer
70 views

Lenovo G40-45 AMD Driver match for Ubuntu 14.04 LTS

I have Lenovo G40-45 Laptop with specs : AMD A8-6410 Processor Radeon R5 M230 I use Ubuntu Gnome 14.04 LTS for the operating system, overall almost my laptop work properly with Ubuntu, but I ...
0
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0answers
87 views

how to install Intel HD 4400 Graphics on Ubuntu 14.10 [on hold]

I was wondering how to install Intel HD 4400 Graphics on Ubuntu 14.10 as the Intel Driver Installer doesn't support the distro! I heard this could help to fix the noisy fan/ power consumption issue ...
0
votes
1answer
19 views

Own brightness script, problem with missing ']'

I'm starting my adventure with Ubuntu ( I'm a MS's kid :D) and I would like to create my own scripts for controlling the brightness. I know all about the xbindkeys, and how does it works, but there is ...
0
votes
1answer
47 views

ubuntu 14.04 fn brightness nvidia not working samsung r540

here's my system info. ubuntu 14.04 nvidia gt330m when i press Fn + up or Fn + down. It doesnt change monitor's brightness. but on top-right corner brightness indicator moves left and right.
0
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0answers
30 views

Getting Ubuntu to work on Thinkpad E145

tl;dr at the bottom I just bought a brand new Lenovo Thinkpad E145, without any pre-installed OS. I wanted to get an Ubuntu distribution so i can run gnuplot and similar stuff, just things for ...
1
vote
0answers
10 views

gcm-calibrate without hardware sensor

My monitor won't allow me to set the contrast when using DVI. And ubuntu/gnome won't allow me to set it via software without some fancy color calibration sensor. on system settings > color the ...
0
votes
2answers
55 views

Brightness Icon

Before Icon Brightness was appearing Hotkey (FN+Arrow Right) Whenever i wanted to change my brightness the icon appears on right side of Ubuntu. But then it suddenly stopped working, it was changing ...
0
votes
0answers
39 views

How can I get more granular brightness control on Asus X550C laptop

I am quite of a newbie to linux and I like my screen to be as dim as possible most of the time. I have Asus X550C Laptop and I had installed Fedora "heisenbug" on it. The thing was, brightness ...
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0answers
54 views

Ubuntu Gnome 14.1 Brightness [closed]

I can't adjust the brightness on my laptop even in dconf.
0
votes
1answer
134 views

brightness control not working in 14.04 (dell inspiron 3537)

brightness control not working when keys are pressed with Fn key. it shows indicator on top right corner increasing & decreasing but nothing happens.
0
votes
1answer
35 views

Ubuntu 12.04 brightness control not working on HP 255

The brightness of my HP 255 is stuck on its brightest level and won't turn down even when I move the cursor back and forward. I tried some of the answers to this on my computer, and now the whole ...
0
votes
1answer
75 views

I am unable to change brightness of my laptop

i am new to ubuntu and using Ubuntu 14.04 and installed nvidia graphics driver in my sony vaio E-series VpCEH25en but I cant change the brightness.
2
votes
0answers
204 views

Screen brightness cannot be changed after upgrade to 14.10

As the title suggests, I upgraded my Dell XPS 15 laptop to 14.10 and now the brightness is stuck at the lowest level. The fn+F4/F5 displays the brightness notifications but the brightness level of the ...
0
votes
1answer
161 views

Automatic screen brightness on Ubuntu 14.10 not working right, manual controls not working at all

My Samsung NP740 has been running Ubuntu fine for 18 months. I did an upgrade to 14.10 and the screen brightness controls stopped working correctly. I did a wipe and fresh install and I still have the ...
0
votes
0answers
106 views

Carbon X1 and Ubuntu 14.10 issues - hibernation, key mapping, brightness and volume keys

I got a Thinkpad Carbon X1 (2nd Gen) with Ubuntu 14.10 and I have a few issues/questions: 1. hibernation (Edit - ...
2
votes
2answers
175 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 ...
1
vote
1answer
59 views

Some Fn Keys not working after BIOS upgrade (ASUS X401U)

Before upgrading BIOS from version 204, all Fn Keys were working properly. After successful upgrade via EasyFlash to version 313 of my ASUS X401U some Fn keys are not working anymore which are: Fn + ...
0
votes
1answer
105 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
0answers
56 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
2answers
92 views

Changing screen Brightness with a script

As you may know, screen brightness drains battery, that's why it is considered a big problem for laptops (at least for me). I can change the screen brightness but every time ubuntu boots up I will ...
0
votes
2answers
58 views

Something weird is happening with Fn keys

I have an Asus N56JR with NVIDIA GeForce 760M. I am running Ubuntu 14.04 LTS. There are a few things wrong with my Fn keys. For one the brightness (controlled with Fn+F5 and Fn+F6) do not respond at ...
0
votes
0answers
28 views

Lower Minimum Screen Brightness

By using /sys/class/backlight/ the screen brightness can go lower than when using the function keys to do so. Is there a way to change the minimum level used by the function key method, rather than ...
0
votes
0answers
47 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 ...
0
votes
1answer
76 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
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0answers
29 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
79 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 ...
0
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0answers
28 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 ...
5
votes
0answers
1k 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
votes
0answers
110 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 ...
2
votes
0answers
94 views

Toshiba u840: Hotkeys don't work after upgrading to 14.10

I've already tried the solutions presented here: Upgraded to 14.10, brightness control quit working - Intel HD 4400 and here: Brightness keys don't work on a Toshiba Satellite t110 with no ...
0
votes
2answers
190 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
58 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
votes
0answers
47 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 ...
3
votes
2answers
755 views

Hot keys brigtness issues with Ubuntu 14.10 in Acer Aspire 5755

I have a Acer Aspire 5755 with Intel video graphic, on Ubuntu 14.04, the combination Fn+←/→(Right/left) arrows can increase/decrease the brightness screen. Works fine on unity and with a ...
0
votes
0answers
53 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
103 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 ...
1
vote
1answer
268 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
4
votes
1answer
337 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...
1
vote
4answers
206 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
1answer
47 views

Where is the laptop brightness script located?

Online I found the command: echo 1 > /sys/class/backlight/acpi_video0/brightness to set my screen brightness to the lowest possible value, currently I am grepping my entire disk for that path, ...
0
votes
0answers
51 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 ...
0
votes
0answers
59 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
131 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 ...
0
votes
1answer
160 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 ...
0
votes
1answer
44 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
0answers
51 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 ...
1
vote
0answers
47 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 ...
0
votes
1answer
229 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 ...
0
votes
0answers
46 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 ...
1
vote
1answer
56 views

Screen brightness Samsung R519 with kubuntu

Kubuntu recognizes the Fn + up/down but it only changes the brightness when it goes from 85% to 71% or viceversa. I want to know an easy way to change the screen brightness. I don't care if the method ...