1
vote
3answers
47 views

Brightness control command on “startup Applications” is not working

On "Startup Applications" utility I added my suitable brightness to be configured each time OS is launched. But it is not working at all. I am having to bear system's very high default brightness. ...
0
votes
0answers
38 views

Brightness not changing Dell 15r SE and ubuntu 12.04

With my current laptop I can't change my brightness anymore I tried xbacklight -set 50 (nothing happened) and also changed this line grub_cmdline_linux_default= "quiet splash" to ...
1
vote
0answers
52 views

No brightness control in Brightness & Lock menu

I have Ubuntu 12.04 LTS 32bit in my Dell Latitude E5530 with Intel core i5 and graphics of Intel® Ivybridge Mobile x86/MMX/SSE2. I can change Brightness with Fn buttons but screen brightness reset to ...
1
vote
0answers
31 views

Ubuntu 12.04.3 LTS retaining screen brightness

Is it possible that Ubuntu retains screen brightness settings used in the previous session after the computer is turned off. If so how can I achieve this effect?
1
vote
0answers
40 views

How can I adjust the brightness on an HP Envy dv7?

I have an HP ENVY dv7. When I was running Windows 8, I could tweak the brightness to my heart's content. Now, I'm limited to only the first five clicks on the brightness bar. After that, same max ...
7
votes
2answers
226 views

Stop Screen Dimming After 60 Seconds (MacBook running 12.04)

I'm running Ubuntu 12.04 on a MacBook air - everything works fine, apart from the fact that the screen dims after 60 seconds of activity. Is there any way to stop this? My computer is on mains ...
0
votes
0answers
133 views

Unable to control brightness, ASUS F551MA/Intel HD

I am unable to control my screen brightness on my new ASUS F551MA with only ubuntu 12.04 installed. It has Intel HD graphics. I can't control my brightness nor with FN+F5/F6 nor with ...
0
votes
1answer
38 views

Brightness problem in Ubuntu 12.04 Precise Pangolin

I own a ACER ASPIRE5734Z that has a Pentium(R) Dual-Core CPU T4500 @ 2.30GHz × 2. I tried this solution,but did not work out: Open terminal ( Ctrl+Alt+T ) and type: sudo gedit /etc/default/grub ...
0
votes
0answers
70 views

Brightness Issues on HP Pavilion 15-n042se Notebook PC

I have installed Ubuntu 12.04 LTS, I found that I can't control the display brightness with the hotkeys (F2 and F3) or even from GUI (Brightness and lock screen), I don't have any control on the ...
0
votes
0answers
107 views

Adjust screen brightness in Ubuntu 12.04 LTS (Packard Bell Easynote R4622 laptop)

I have a Packard Bell R4622 laptop running Ubuntu 12.04 LTS 32 bit. I turned the brightness down with the function keys because the screen was too bright, but now it is too dark and I cannot turn it ...
0
votes
0answers
124 views

My Laptop Not Charging And Brightness Keys Not Working After Installing Ubuntu 12.04.3 LTS

I have Lenovo(G-505s) Laptop with per-installed windows 8. Recently I'm installed Ubuntu 12.04 through CD. But after installing my laptop battery not charging and my brightness keys not working in ...
1
vote
2answers
123 views

Why is my Laptop Brightness reset to minimum after every restart?

I have an Acer Aspire 6930G with an Nvidia 9600MGS and Ubuntu 12.04 LTS. Every time I turn off my computer and then turn it back on the brightness is always set back at the lowest possible level. I ...
0
votes
1answer
126 views

Brightness in ubuntu 12.04

Well this is a common problem as i have seen through my google searches but i didn't manage to find any satisfactory solution so far. I got my laptop recently which came with windows 8 pre-installed.I ...
0
votes
1answer
278 views

No brightness control in Ubuntu 12.04, Lenovo V570

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 ...
2
votes
0answers
80 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
119 views

Various troubles with Ubuntu 12.04 LTS (Toshiba Satellite)

I installed Ubuntu 12.04 LTS on my Toshiba Satellite C660D-1FV a few days ago. Although the OS is updated, I'm experiencing some problems like: When 2 or more applications are simultaneously ...
0
votes
0answers
74 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 ...
1
vote
4answers
213 views

How to decrease the brightness in Samsung RV509?

I'm using a Samsung RV509 laptop with Ubuntu 12.04 LTS. Can anyone help me to decrease the brightness in my laptop?
0
votes
0answers
62 views

Ubuntu 12.04 problems

I come in peace :) After paying a visit to couple windows alternatives here on Linux, like Debian, Mint and Fedora I realized that I prefer Ubuntu more, even with a Debian 7 being more stable, it ...
1
vote
0answers
47 views

Key Repeat functionality doesn't work on certain keys (Ubuntu 12.04)

I'm running Ubuntu 12.04 on a Macbook Pro and key repeat (when I hold down a key) is not working for any of the brightness buttons (keyboard backlight and screen brightness). Is there any way to ...
7
votes
6answers
871 views

Changing brightness at startup

My Lenovo T440s starts up with maximum brightness. Following this thread I have tried to alter rc.local, but this does not work. When I execute the command cat ...
0
votes
0answers
53 views

cannot adjust brightness in Dell N4030 having Ubuntu 12.04

Recently, I installed Ubuntu 12.04 LTS as dual boot along with my Windows 7 64bit.But i'm unable to adjust brightness in my Dell N4030. Even i'm unable to adjust brightness using the keyboard function ...
0
votes
0answers
162 views

How do I adjust screen brightness / backight on a Toshiba Satellite C50D?

I know this is a known bug, it been asked and answered thousands of times before. I've spent the past couple of months searching for a solution and all have failed. My Fn keys won't adjust brightness ...
0
votes
1answer
147 views

How can control my brightness of the display on hp nseries laptop

I just bought a new laptop and i have installed windows 8 and ubuntu 12.04 on it. And while using ubuntu i am not able to control my brightness with the dedicated keys or the softwares such as ...
0
votes
1answer
709 views

Wireless driver Lenovo Flex 14 Ubuntu 12 Ultrabook

I recently bought a Lenovo Ideapad Flex 14 and the wireless card is not working and there are issues with the brightness when I start the computer. I tried the tips that are already given for the ...
0
votes
1answer
259 views

Intel Graphic 3rd with 12.4 “nomodeset” working but?

If i'm booting with "nomodeset" then can't change Brightness/Login/Logout/Suspend/Resume ..etc. Accidentally booted once without "nomodeset" everything was working ...
3
votes
0answers
207 views

Fn key combination *suddenly* stopped working for brightness only

I've looked at most of the questions relating to enabling hardware brightness control under Ubuntu with the Acer Aspire S3 laptop; initially these fixes worked, under the initially installed kernel ...
0
votes
0answers
285 views

How to permanently set the screen brightness level in ubuntu 12.04 on Vaio E-series laptop?

I have ubuntu 12.04 lts running on my sony vaio E-series (vpceb44en). I have followed the post How to permanently set screen brightness level in Ubuntu 12.04 on Dell Vostro 2420 laptop? on howto ...
3
votes
1answer
299 views

Notified brightness change is not applied

Note : I know this question is becoming quite common, but I'm afraid every solution I found failed to solve the problem. Maybe the knowledge-base we have about this is getting old, irrelevant for ...
0
votes
1answer
356 views

Brightness hotkey doesn't work properly on my hardware

I have a System 76 Gazelle Pro notebook. Sound hotkeys work correctly but not brightness one. When I push Fn+F8, it displays the ubuntu notification about brightness going down but the real ...
0
votes
1answer
647 views

Disable Screensaver (Black Screen) in Ubuntu 12.04

Background : I have an application which is running on top of Ubuntu 12.04. When I boot up the device, it will automatically open the application and running until power off the device. Problem : ...
1
vote
0answers
673 views

Brightness 0% on Lenovo G500s on startup / boot

I've installed Ubuntu 12.04 on a Lenovo G500s Laptop. The screen is scrambled/shows weird artefacts during boot but that doesn't really bother me. What does is this: The screen's brightness is always ...
0
votes
0answers
116 views

Screen brightness control doesn't work after update

I just installed Xubuntu 12.04 on my Toshiba Satellite laptop. Out of the box, everything worked fine. I could change the screen brightness with the fn keys, and it changed automatically when ...
0
votes
0answers
576 views

Ubuntu Brightness Not Working

I am using 12.04 in my dell inspiron 3521.It has got AMD radeon 7600 and intel graphics.Brightness control was working perfectly. After wiping the pre installed 12.04,I installed new 12.04 ...
0
votes
0answers
88 views

How to control screen Brightness Ubuntu 12.04 64bit in iMac 2011

I have installed Ubuntu 12.04 in a 2011 iMac computer. Everything is working properly, but I'm struggling with the control of screen brightness. I have tried several solutions and none of them work. ...
1
vote
1answer
722 views

Brightness function keys not working in 12.04.3 LTS?

I'm running Ubuntu 12.04.3 LTS (info from cat /etc/issue/) on an Asus X401A Kernel is: 3.8.0-31-generic I've tried changing the /etc/default/grub file with the following: ...
0
votes
0answers
382 views

Trouble Adjusting the Brightness for Sony Vaio (Ubuntu 12.04)

Hi I seemed to run into a problem regarding the lighting for Ubuntu 12.04 on my Sony Vaio (VPC-CW2FGX/B). I used to be able to adjust the brightness when I first installed Ubuntu, but when I installed ...
1
vote
1answer
3k views

Ubuntu 12.04 - gnome-settings-daemon crash and problem with fn keys

I know there are many questions similar to this, I've been reading them and searching for a solution for 2 days but no luck so far. I have a Samsung NP550P5C laptop and just installed Ubuntu 12.04.3 ...
0
votes
0answers
811 views

Ubuntu 12.04LTS screen brightness doesn't change : always set to maximum

I have Asus G55 ES71 laptop and I recently installed Ubuntu in it. Whenever I start my laptop, the brightness level is set to maximum by default and it doesn't change. Manually changing it through ...
1
vote
1answer
817 views

Ubuntu 12.04 Cannot adjust brightness on Dell Inspiron 15: the suggested solution to change the grub fails

Dell Inspiron 15 (Inspiron 3521). The graphic card is the integrated Intel graphic card: Intel® HD Graphics Screen is: LED Backlit Display with Truelife and HD resolution Install Ubuntu 12.04 ...
0
votes
6answers
9k views

Installing Ubuntu 12.04 on a Lenovo G500

I recently bought a Lenovo G500, and had a rather entertaining time trying to get Ubuntu installed. Since it came with Windows 8 installed it turned out to be an unexpected challenge. For anyone ...
0
votes
1answer
208 views

Backlight controls stop working once X starts

I'm using a Lenovo Thinkpad X120e with Ubuntu 12.04 LTS 64-bit and a Gnome 3.4 (gnome-shell) desktop environment. I have installed the latest proprietary AMD drivers (From their website) for the AMD ...
1
vote
0answers
91 views

can't adjust screen brightness control in ubuntu 12.04? [duplicate]

My laptop is lenovo g580. I have searched for the solution. I have tried xbacklight. please help
1
vote
3answers
2k views

Brightness control problem on acer aspire V5

I am running Ubuntu 12.04 LTS on new Acer Aspire V5. There is no other OS installed. I can not control the brightness of the screen using Fn+left and Fn+right keys. I tried to change brightness from ...
2
votes
2answers
3k views

Cannot change brightness setting using function buttons or using the brightness control bar on HP laptop

I faced this problem when I brought a new HP Laptop , hoping to install Ubuntu(Linux) but when i booted from a Live DVD the brightness was set at max and wouldnt be changed from the function keys or ...
0
votes
1answer
300 views

Lenovo T410 running Ubuntu 12.04 won't change brightness

Neither the Fn + Home or the Fn + End (brighter/dimmer) or using the GUI changes the brightness. I've looked up some possible solutions, all of which involve editing an obscure text file. None of ...
1
vote
1answer
132 views

Brightness can't be fixed

I have problem with brightness on Ubuntu 12.04. Whenever I restart or turn up my HP ProBook 4515s laptop, brightness is set on the highest level of brightness. Please help me to solve this problem :) ...
0
votes
1answer
318 views

How can I avoid maximum brightness settings upon every boot?

Whenever I boot Ubuntu the display and keyboard brightness are reset to maximum. Since I almost never need such high brightness settings, every boot includes an aftermath of excessive key pressing. ...
0
votes
0answers
132 views

Ubuntu 12.04 screen brightness flickering after software update

I have a Dell latitude E6410 laptop with Ubuntu 12.04. After installing few software updates last friday, my screen started flickering the brightness. It has a nvidia graphics card in it. If someone ...
1
vote
2answers
1k views

Ubuntu 12.04 Backlight Problem, Function keys not working

I have ubuntu 12.04.2 LTS AND i recently updated my system. There was a kernel update also. I tried several solutions on net. Like This , this and none of them worked for me. I put that ...