0
votes
1answer
12 views

Upgraded from 12.04 to 14.04 and screen brightness can not be decreased

The brightness remains maximum always. I am using ACER Aspire E1-572, and its brightness cannot be changed. I tried: echo -n 100 > /proc/acpi/video/DVGA/LCD/brightness echo -n 100 > ...
0
votes
0answers
19 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.
0
votes
1answer
22 views

Editing max_brightness

Is it possible to edit the value in /sys/class/brightness/acpi_video0/max_brightness/ ? I've tried: sudo echo 16 > max_brightness from the directory, but I'm getting Permission Denied The current ...
1
vote
1answer
18 views

Screen dims when looking at Dark Screens

I am using Ubuntu 14.04 on a Dell Inspiron 11. It uses Intel's Integrated graphics cards. The problem I'm having is when ever I bring something up on the screen that is dark (such as a terminal ...
0
votes
0answers
45 views

Xubuntu (Server Install) screen blanks for 1 second after 1 minute

Little hard to understand the question from the title, but I'll get detailed here. After EXACTLY 60 seconds of init starting and the system booting, the screen will seem to "restart", blanking out for ...
2
votes
0answers
48 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
1answer
58 views

set the screen brightness on startup

On Ubuntu 14.04 I tried to dim the screen brightness to 50% on each system start in /etc/rc.local with the line xbacklight -set 50% right before the line exit 0 Why does this not work? Is there a ...
0
votes
0answers
39 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
62 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 ...
2
votes
3answers
2k views

Screen brightness not working in Ubuntu 14.04

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
0answers
353 views

Ubuntu 14.04 locks screen without dimming during fullscreen video playing?

I upgraded from 13.10 to 14.04 yesterday, and it appears that something has changed concerning how screen dimming works during fullscreen video playback. This problem does not occur during video ...
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?
0
votes
0answers
126 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 ...
1
vote
0answers
12 views

Screen brightness reset to minimum after every reboot on HP Pavilon DV4. HELP [duplicate]

Ubuntu 13.10 doesn't save my brightness settings between sessions. Everytime I boot up, the brightness is always at zero, and I always have to set it back to my preferred setting (at maximum). How can ...
0
votes
0answers
43 views

Blackscreen like DOS after press F5

This is the first time I use Ubuntu. (Actually, I've used Ubuntu 10.10 before, but now I'm going back to Ubuntu because my Windows encounters bugs and isn't stable) My trouble here with my Dell 14R ...
0
votes
1answer
312 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
82 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
0answers
62 views

How can one increase the timeout before the display dims when on the battery?

If I do not touch my computer (a Toshiba Satellite) for 15 seconds when running off the battery, the screen dims to the lowest brightness. I have already disabled "Dim screen to save power." I do not ...
0
votes
1answer
84 views

I unchecked “dim the display”, but it's still diming

I have problem on my asus k55a running ubuntu 13.10. I have unchecked "Dim screen to save power" in Brightness & Lock, but the screen is still dimming after a while. This is very annoying when I'm ...
0
votes
1answer
281 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
866 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 ...
1
vote
0answers
68 views

Ubuntu+Gnome3 screen not dimming

I have an Ubuntu installation with Unity and Gnome3. When I log in using Unity, if the system is inactive for X minutes, the screen will dim. When using Gnome3 the screen never dims. Under ...
1
vote
1answer
117 views

Brightness slider gone, and the brightness is constantly jittering

I've just installed a clean version of 13.10 on my MSI U123. Before I've used 12.4 without a hitch. As soon as I entered the brightness and lock settings window the brightness starts to flicker and ...
2
votes
1answer
127 views

how to disable the animation of dimming the screen when ubuntu turns inactive screen off

When Ubuntu 13.10 decides to turn of inactive screen, it runs an animation for 15 seconds long, slowly dimming the screen. The purpose, I assume, is to give an interim for human intervention - a ...
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
88 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 ...
1
vote
1answer
144 views

Screen Dimmer in Ubuntu than in Windows - Haswell NEC Lavie

I just bought a new laptop, on which I immediately installed Ubuntu 13.10. Pretty much everything worked out of the box, except the screen brightness. The maximum brightness in Ubuntu is much lower ...
0
votes
1answer
191 views

screen keeps black in ubuntu 13.10 when it must come out of sleep mode

I'm running Ubuntu 13.10 on a completely new machine, was fresh installed. After a while, while not working on it, the screen turns black, when you try to work again, you can't exit the black screen, ...
-2
votes
1answer
187 views

How to fix the screen being to bright in Ubuntu 12.04 and up

How to fix the screen brightness and color being too bright in ubuntu.
1
vote
1answer
172 views

Full brightness and keyboard backligh at boot

I own an Asus N56VZ, and each time I start Ubuntu (13.10 and prior versions) my screen brightness and keyboard backlights reset their values to the max. Ubuntu doesn't save my settings on reboot. I ...
1
vote
2answers
329 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 ...
1
vote
1answer
310 views

How to lower monitor screen brightness? [closed]

I'm using 10.10 ubuntu and i want to reduce my screen brightness. In windows 7 option like calibrate color is available by which i have reduced brightness, is there any thing i can do in ubuntu.
2
votes
4answers
785 views

Lenove Z570 Brightness Setting Gone in Ubuntu 13.10

My Lenovo Z570 with Ubuntu 13.10 only now has not brightness controls. I tried some of the command line hacks (xbacklight and all) and checked all my drivers and bios (all are up to date) but nothing ...
0
votes
0answers
50 views

why my monitor is so dark when ubuntu starts?

My problem is that my monitor is very dark when ubuntu starts. I can change it in bright and lock but some time is so dark that i cannot find the mouse arrow. Can somebody tell me a way to setup ...
0
votes
0answers
4k views

Lubuntu netbook screen brightness

I can't change my screen brightness. I've looked online and tried all of the potential solutions I could find. I am running Lubuntu on a Samsung NC110 Netbook. When I press "fn + up/down" I get a ...
0
votes
0answers
93 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. ...
0
votes
0answers
70 views

Dell Inspiron M5110 Dimming Troubleshoot

I've had my Inspiron laptop about 3 years now (still runs windows 7) and have recently been encountering an issue in which the screen auto dims on it's own repeatedly and randomly and can only be ...
0
votes
0answers
829 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 ...
0
votes
0answers
168 views

Lubuntu not automatically reducing screen brightness (AO532h)

I just installed Lubuntu 13.04 on my Acer Aspire One 532h and can't get the screen to automatically dim when the computer is idle. Manual dim works via the keyboard. In the preferences for the Xfce ...
1
vote
0answers
107 views

Turning Backlight on on external Monitor

I have a lenovo laptop running xubuntu smoothly. I plugged in a dvi monitor with a hdmi to dvi wire. The display works perfectly for two seconds then the backlight turns off. I cant find a way to ...
0
votes
0answers
100 views

Does laptop brightness change on battery (like Windows)?

I've been looking for a new laptop, and lots of reviews of the gaming machines talk of the display dimming when on battery, and being unavoidable. Is this also true for linux/Ubuntu, or is it a ...
0
votes
1answer
627 views

Screen turns black when lowering brightness

I have recently installed Ubuntu 12.04 on my Lenovo Thinkpad Edge E535 laptop along with Jupiter for power saving. And every time I use Fn key to alter the brightness, the screen turns blank and then ...
0
votes
1answer
2k views

Disable automatic screen dimming

I currently have three computers running Ubuntu. With two of them, If I don't touch the mouse or keyboard... nothing happens. However, with the third, the screen gets dimmer after about 60 seconds of ...
0
votes
1answer
61 views

Adjusting Bright makes Ubuntu not to respond

Have just installed Ubuntu 12.04 LTS and when adjusting the bright through the keyboard Ubuntu gets frozen and needs to be restarted by forcing the turnoff button, have noticed that this only happens ...
-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 ...
1
vote
0answers
53 views

ubuntu brightness automatically without any delay

after change brightness to for example 30% without delay and between work on laptop , that automatically change to 60% after 10~15 second. i'm change GRUB_CMDLINE_LINUX="acpi_backlight=vendor" and ...
1
vote
1answer
1k views

How to stop automatic brightness change while on battery?

I generally keep screen brightness lowest.While laptop is on battery if I do not use mouse or keyboard for some time (I do not exactly know this time interval, maybe 20 second) brightness increases ...
0
votes
1answer
1k views

How can I save my laptop's screen brightness in Ubuntu 13.04?

My laptop's screen brightness returns to the high mode when I restart my computer. I wanna to find a method to save it forever. I like change my screen brightness to 40% and save it to prevent its ...
2
votes
2answers
2k views

Screen brightness stuck on max setting, FN+down only brings it down one level

EDIT: Updating to Ubuntu 13.10 solved this issue for me out of the box. I'm trying to get some control over the brightness of my Samsung QX411 (Integrated Intel graphics) on Ubuntu 3.04 (though I ...
5
votes
1answer
841 views

How to increase the screen brightness control sensitivity?

In Ubuntu 13.04, when I use the keyboard hotkeys to control my screen brightness, I only get 5 steps to go from the darkest to the brightest level, for a total of 6 levels. However, I noticed a ...