0
votes
0answers
29 views

Brightness control issue - /sys/class/backlight empty

My laptop has Intel(R) Core(TM) i5-4200U CPU @ 1.60GHz, 4G RAM, Haswell-ULT Integrated Graphics Controller Only thing unusual is when I installed Ubuntu 14.04 LTS, I edited grub as ...
0
votes
0answers
13 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 ...
1
vote
1answer
26 views

fglrx: dim screen until brightness key pressed

I reported this at https://bugs.launchpad.net/ubuntu/+source/fglrx-installer/+bug/1360218 three weeks ago but it is still unassigned and no one has commented on it but myself. It is a Lenovo G50-45 ...
0
votes
1answer
49 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
16 views

Set Brightness to 0 when lid closes

is there a way of setting the brightness level to 0 or blanking the screen when I close my lid (without suspending the system). I just prefer it that way, since I listen to audiobooks while driving ...
0
votes
1answer
69 views

Brightness doesn't decrease in Ubuntu 14.04

I've recently installed Ubuntu 14.04 in my Dell Inspiron 5521. I find that brightness is set to a maximum level and Brightness keys doesn't work though they show as if it gets decreased. I searched ...
0
votes
0answers
58 views

Xubuntu - How do I map the brightness keys to run a script?

I'm pretty new to Linux so bear with me. I have an emachines laptop (ugh) with FN + Left Arr / Right Arr brightness keys. These work perfectly fine in Windows but do not work in Xubuntu. What happens ...
0
votes
0answers
44 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 ...
0
votes
0answers
57 views

Acer Aspire 7741z : Function key adjust brightness but displays 10% in Ubuntu 14

On my Acer my brightness function key works, but the confirmation display only goes up to about 10%. Also the function key seems to be the only thing that will adjust the brightness. I cannot adjust ...
0
votes
0answers
83 views

Restore laptop screen brightness when unlocking screen

My config is the following: - Ubuntu 14.04 - An ASUS laptop - An additional LCD screen connected through VGA I control my additional LCD screen's brightness with dedicated controls located directly ...
0
votes
0answers
75 views

Max Brightness in ubuntu lower when compared to windows

I've installed Ubuntu 14.04 on my (new) ThinkPad Edge330. Everything worked quite well so far. I've noticed that the screen wasn't that bright and was a bit disappointed of the ThinkPad, but then I ...
0
votes
1answer
249 views

Ubuntu 14.04LTS hangs when i change brightness of my display on Dell N5010 laptop

I have dell n5010 my system hang when I try to change brightness of the display and this happen only when my system on battery please help how to solve this problem
1
vote
1answer
131 views

Samsung Keyboard Brightness Keys

So I've recently installed Ubuntu 14.04 (kernel: 3.13.0-24-generic). It's mostly working with my Samsung NP540U4E laptop, just having some trouble with the keyboard brightness change function keys. ...
1
vote
2answers
183 views

Brightness controls mismatch

This seems to be a hardware issue rather than a Ubuntu issue, but nevertheless, here goes. I have an Acer ao756-2617 with Ubuntu 14.04, elementary os luna, bodhi linux, and zorin os 8. most of these ...
0
votes
0answers
100 views

Changing Brightness Xubuntu [13.10]

I cannot change the screen brightness on Xubuntu 13.10. I am running a Toshiba Satellite Laptop, using the proprietary fglrx AMD drivers, and have tried the acpi_vender etc. kernel parameters (do not ...
0
votes
0answers
149 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
262 views

Xubuntu Brightness not working

I am trying to gain the ability to change the brightness on my Toshiba Satellite laptop running Xubuntu. I have xbacklight, and am running xfce4-power-manager with the --no-daemon flag. It's not ...
0
votes
1answer
132 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
349 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 ...
0
votes
0answers
84 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
0answers
49 views

Ubuntu 13.10: Medion Aykoya P6630 Brighness changing issues

So I have tried a few things already with sudo gedit /etc/default/grub and changed the GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" to GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_osi=Linux ...
1
vote
0answers
27 views

Brightness determined by eveness and oddness of level numbers

I have a Lenovo G500s laptop on which I installed Ubuntu 13.10, and I am having problems with my brightness, which does not rise and fall gradually but instead alternates between the maximum and ...
0
votes
1answer
310 views

My laptop boots with full screen brightness and full keyboard backlight

I meets a problem that my laptop boots with full screen brightness and full keyboard backlight. According to a post on Ubuntu forum for Macbook (http://ubuntuforums.org/showthread.php?t=1987790), it ...
0
votes
1answer
211 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
0answers
77 views

Which program handles the screen backlight in 13.10?

What is the name of the program that handles the screen backlight in laptops in 13.10? Where are the settings for that program? I need to switch the brightness file that it uses. I have 3 brightness ...
0
votes
1answer
950 views

13.10 brightness flickering MSI Wind U100

Vanilla install of Ubuntu 13.10 on my MSI Wind U100. Intel graphics card I think. Auto brightness flickers up and down, brightness hud display top-right also flickers. Interrupts input so need to ...
0
votes
0answers
85 views

Display brightness goes all the way up or all the way down when I make slight adjustement

I just fresh installed Ubuntu 13.10 on a MSI MS-16362 laptop. When ever I try to increase the display brightness with Fn + F5 or decrease it with Fn + F4, the brightness amount either goes through ...
1
vote
0answers
244 views

reduce laptop screen brigtness below minimum

This is not duplicate of http://superuser.com/questions/560445/dim-screen-past-the-minimum-on-ubuntu . I have already tried the solution mentioned in the above article. my laptop configuration is dell ...
0
votes
0answers
53 views

dumb power setting ensure dim screen all the time

It's quite dim, but when I unplug, it gets brighter. Funnily enough, when the battery gets critical it goes dim again, and if I plug it in in a dim state it finally gets bright with the power plug ...
1
vote
1answer
93 views

Setting which brightness determines screen brightness

I'm having an issue running Kubuntu 13.04 with brightness, something that seems common. In particular, brightness can be found in these 2 directories: /sys/class/backlight/acpi_video0/brightness ...
3
votes
0answers
221 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
133 views

Screen Brightness regulation after hibernation 13.10

I'm new to Ubuntu 13.10 and pretty much satisfied with it. My first problem was that there was no brightness regulation at all, then I added the line "GRUB_CMDLINE_LINUX_DEFAULT="quiet splash ...
2
votes
2answers
517 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
119 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
585 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 ...
1
vote
2answers
361 views

How can I stop my Dell Inspiron laptop from dimming the screen when I plug in the AC adapter?

I'm using a Dell Inspiron N5110 laptop with Ubuntu 13 and I find that every time I plug the power in to charge, the screen brightness dims. If I go into the brightness settings window the brightness ...
0
votes
0answers
502 views

Automatic Screen Brightnes

i know this question have been asked many times but i really cant get it to work. I just installed Ubuntu 13.10 on my Lenovo G580 laptop and i'm trying to manage screen brightness when on battery or ...
0
votes
0answers
108 views

Problems with Ubuntu 13.04 (wifi and screen brightness) on HP 2000-2b59WM

I use Linux for over 2 years on my desktop computer, so far I never had many problems and it always worked fine for my needs as an engineering student. Going straight to the point, there is no ...
1
vote
0answers
826 views

Brightness at 100% since updating from Kubuntu 13.04 to 13.10

since I've updated to Kubuntu 13.10 my brightness level is at 100%. I already googled around and tried different tips, but none of them worked. I've edited /etc/default/grub to ...
-1
votes
1answer
359 views

Brightness stuck at 100% on an Acer Aspire 5742Z

I had done a ton of reading on problems similar to this and have done some digging in my sys/class files to find my brightness controls. I found two possibles, one from Acer and one from Intel, both ...
0
votes
0answers
285 views

Brightness minimum level turns backlight off

I have an Acer Aspire S3-391 ultrabook. It's Sandy Bridge i3-2377M CPU with appropriate integrated graphics. 320GB hard drive with 20GB cache SSD. I have Windows installed on the hard drive and Ubuntu ...
2
votes
2answers
4k 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 ...
1
vote
1answer
677 views

My brightness control buttons are not working on my Packard Bell netbook

I have a Packard Bell DOT S netbook. First I installed Ubuntu on it. I noticed that I couldn't use my brightness control buttons (F11 F12). I saw the little bar like it is changing its brightness, but ...
0
votes
1answer
497 views

How to make FN keys change brightness on Gateway m7315u?

I know this not a new issue concerning brightness, however, I am anxious to get this working. I added acpi_backlight=vendor to the boot parameters which allows me to change the brightness using ...
0
votes
1answer
726 views

Dell Inspiron 5220 Screen Brightness buttons

I've installed Ubuntu 13.04, everything seems fine except using the FN-key to change the laptop's brightness. It just stays permanently on full brightness. Even if I go into System Settings and ...
-1
votes
1answer
316 views

Why does 13.04 cause my laptop screen to go completely black? [closed]

I have been using Ubuntu for several years, but this is the first time I have had a problem like this. When I upgraded from 12.10 to 13.04, every time I boot into Ubuntu and the login screen is ...
0
votes
2answers
2k views

Dell laptop display brightness problem

I am using Dell inspiron 15 and Ubuntu 13.04. I have hot keys on my keyboard to adjust display brightness and they work fine.But the problem is, as soon as I switch on the laptop the brightness is set ...
1
vote
1answer
276 views

Brightness control on Toshiba P855-30D

This seems to be a recurring question, but none of the solutions I found here and there seem to work for me. So here are the facts: Toshiba Satellite P855-30D Nvidia 640M BIOS 1.50 Ubuntu 13.04 64 ...
1
vote
2answers
234 views

Backlight can't be adjusted 13.04

In Ubuntu 12.04 i was able to change the brightness of my laptop screen by using the FN + Rightarrow all i had to do for that was include GRUB_CMDLINE_LINUX_DEFAULT="quiet splash ...
1
vote
2answers
915 views

Unable to change the brightness on my Dell XPS 15 (L502X)

I am using ubuntu 13.04 and I am unable to change the brightness on my laptop and need a bit a help.