Questions related to screen brightness.

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0
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1answer
71 views

Adjust screen backlight on ancient HP, with Lubuntu 15.10

I've installed Lubuntu 15.10 on my HP nx9005 (circa 2001), and all works great except that I can find no way to adjust the backlight brightness. I've had a look at various solutions, here and ...
1
vote
0answers
23 views

My brightness key is lagging severely and sometimes doesn't work at all on 14.04 LTS (HP Stream 11)

This is what happens when I try to lower the brightness - https://www.youtube.com/watch?v=z5HEVHx7roQ. When I start up my laptop, it dims the brightness and I can't see some of the screen with the ...
0
votes
0answers
26 views

Brightness doesn't go to zero anymore

After a relatively recent update on Ubuntu 14.04.3, the lowest my brightness will go is: Before this update, I was able to turn it completely to zero (effectively turning off the backlight entirely ...
1
vote
0answers
995 views

Can't disable backlit keyboard on Sony Viao, Ubuntu 13.04, 64bit

I need to turn off the backlit keyboard on my Sony Viao, with 64 bit Ubuntu 13.04. I'm prone to migraines, and the lights really bother my eyes. I've ried several posted solutions, none work. (...
1
vote
0answers
12 views

Is there a way to tie the brightness levels of each monitor together?

I have two monitors, one external, one part of my laptop. In order to set the brightness on my external monitor I have to use this answer. But I really just want to be able to hit the button on my ...
0
votes
0answers
82 views

Brightnes fn keys move brightness bar, don't change brightness level

I have an Asus laptop with an AMD processor. In the live cd, the brightness fn keys worked perfectly. However, I activated the additional drivers for fglrx-updates and 'processor microcode for AMD ...
0
votes
2answers
515 views

Cannot change brightness on Samsung rv411 laptop computer

I am using a Samsung RV411 s03 laptop computer. I have tried several linux distribution on my laptop computer; I have got a problem with them which is the brightness of the monitor cannot be changed ...
0
votes
1answer
144 views

Shortcut keys on Acer CB3-111-670 Chromebook running Ubuntu 15.10 not working

I have Ubuntu 15.10 running on the internal SSD of a Acer CB3-111-670 Chromebook. After some running around to fix the audio, the last thing (that I can tell) doesn't work is the shortcut keys (volume ...
2
votes
4answers
5k views

Brightness control in Ubuntu 14.04 on Sony Vaio?

I recently installed Ubuntu 14.04 LTS on my Sony Vaio [nVidia GeForce 410M/PCIe/SSE2]. Earlier I had 12.04 installed on it, then I edited the xorg.conf file to control brightness using the function ...
0
votes
1answer
383 views

15.10 Brightness adjustment

I have a 2015 Thinkpad X1 Carbon that I just installed Ubuntu 15.10 on. I have noticed that there is a huge jump between the minimum screen brightness, where the backlight is completely off, to the ...
1
vote
1answer
219 views

Unable to change brightness in a Lenovo z500 laptop with Ubuntu 15.10

Brightness adjustment keys have no effect (although they are recognized by the environment), and I can't change the brightness using GUI tools as well. In Windows 10 i had the same problem and after ...
0
votes
1answer
31 views

Laptop screen brightness change seems to affect color, not backlight

I have a problem with my laptop (Acer Aspire 5750G), I can't change the screen brightness. I noticed that the only application with which I was able to change the brightness of my laptop screen is ...
4
votes
1answer
11k views

How to use xbacklight with brightness keys in a VAIO

I have a Sony VAIO VPCCW15FL, with Ubuntu 12.04 installed. Sadly, the brightness keys do not work out of the box, although the brightness meter reacts to the brightness up/down keypresses. Yesterday,...
0
votes
2answers
361 views

Asus X554LA fn+brightness problem

I'm new to ubuntu and my Asus X555LA brought me here. The fn + (brightness up/brightness down) is not working, i did some search and what i tried till now is modifying grub file from etc\default ...
0
votes
0answers
18 views

Ubuntu 14.04 LTS brightness not changing

I get a migraine if there is too much brightness and I've been searching the forums a lot and have not found a solution so far that worked for me and that is why I am posting this question. Please ...
1
vote
0answers
22 views

How to set brightness to my Last set level?

I have read a lot of Q&A to set brightness to a fixed level on startup. But that is not what I want. I want that script (/etc/rc.local ) to update itself dynamically. i.e, On every startup ...
0
votes
0answers
10 views

Ubuntu 14.04.03 Screen dims when I plug in headset and system starts dimmed

Maybe these two are connected, so I made one question. My laptop is Dell 3542 (Inspiron 15 3000 Series) with Intel Pentium, 4GB RAM, kernel is 3.19.0-43-generic #49~14.04.1-Ubuntu SMP. When this ...
3
votes
4answers
1k views

Laptop brightness does not change

I have just installed Ubuntu 13.10 and am trying to adjust my laptop screen brightness. My laptop Dell studio 1558 has a key to change the screen brightness; however, when I reduced brightness to zero ...
1
vote
0answers
610 views

Ubuntu 15.10(wily) Brightness control not working

The brightness buttons and the brightness control in system settings in Ubuntu 15.10 have suddenly stopped working. They were working fine at first(after I upgraded from 15.04). I have no Xorg.conf ...
1
vote
1answer
84 views

Custom command - one less than current brightness level

I tried using xbacklight, but it wasnt working so I made some custom global commands to control the brightness. For example: "Bright" : sudo bash -c "echo 20 > /sys/class/backlight/acpi_video0/...
0
votes
1answer
98 views

Raise and lower screen brightness (both from menu and from keyboard)

I'm working on an Acer Aspire E15 with Ubuntu Studio 14.04 installed in dual-boot with Windows 8.1, and from Ubuntu I'm not able to modify the screen brightness, for two reasons. The first is that I ...
6
votes
2answers
2k views

2 folders in Sys/Class/Backlight?

ISSUE: Backlight brightness does not change. More Detail: Brightness will not change, using both 'System Settings->Screen', or Fn keys (Brightness bar shows and moves, but screen brightness does not ...
1
vote
0answers
100 views

Hotkeys and slider for brightness don't work

I have an Intel processor with no graphics and Nvidia GTX980M with Nvidia driver. I just installed Ubuntu Gnome 15.10 and everything works fine except for the brightness controls. Changing both from ...
0
votes
0answers
35 views

Change default brightness level in Ubuntu 14. 04 LTS / Brightness is reset to Maximum on every Restart on Ubuntu 14.04 LTS [duplicate]

Recently I was going through the link below (Brightness is reset to Maximum on every Restart) and was trying to change the default brightness level on my system as its very annoying as the default ...
1
vote
1answer
120 views

Brightness control is not working

The brightness control in the settings does not work. I have an Intel® HD Graphics 4000 (on a i5-3570K Processor) and run Ubuntu 14.04.03. I followed the instruction given in https://wiki.ubuntu.com/...
108
votes
20answers
105k views

Brightness is reset to Maximum on every Restart

The brightness of my laptop is reset to Max on every restart. I tried the solution provided at this website but had no luck. http://ubuntuguide.net/how-to-save-screen-brightness-settings-in-ubuntu-12-...
0
votes
1answer
105 views

Ubuntu 14.04 fn keys starts to work after resume from sleep

I have a problem with Ubuntu 14.04. After fresh installation none of the fn keys didn't work except for fn+f3 combination - which is sleep. After resume from sleep all fn keys (brightness, power, wifi)...
0
votes
1answer
111 views

15.10 Dell Vostro 3700 display brightness fn+key change problem

I have 15.10 default install, no any changes to /etc/default/grub. Now when I press Fn + arrowUp/Down I can see display brightness change notification. Moreover, /sys/class/backlight/acpi_video0/* ...
0
votes
2answers
726 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
1answer
71 views

Ubuntu screen brightness issue only at startup

Ubuntu 14.04 / Windows 10 dual boot The laptop can´t remember brightness before, but after manually set the brightness in the rc.local file, it can now remember the brightness level after boot into ...
0
votes
0answers
87 views

Strange problem with backlight (it worked and now no more?)

EDIT : It's started working again?! i went out on friday night and i left pc ON. This morning it was working. looking in syslog i saw this : Dec 10 22:41:00 LittleHP kernel: [ 262.553256] video ...
0
votes
0answers
18 views

How can I change my brightness on my two monitors via keyboard shortcut/key

I am using Ubuntu 14.04 LTS with two monitors and an apple keyboard with brightness keys. I have done some research and have come up empty handed. I an wondering if there is any way to connect my ...
0
votes
0answers
44 views

Cron job to set screen brightness not working in ubuntu 14.04

In the terminal, I ran: crontab -e Then I added the following cronjob in the file 26 21 * * * /usr/bin/xbacklight -set 80 This was supposed to set the brightness to 80% at 9:26 PM. But its not ...
0
votes
1answer
43 views

How do I set brightness to a lower level in lubuntu 12 (HP laptop)?

I tried everything I found online, but none of the methods I found worked. The buttons don't work, and there's no such thing as "Brightness" in Monitor Settings. I tried xbacklight -set but it didn't ...
0
votes
0answers
78 views

Changes in system screen brightness aren't reflected on actual screen. [Ubuntu 15.10][Laptop]

I've had this issue since 14.04.3 but I never bothered to fix it since I didn't use Ubuntu much. Pressing the brightness up/down function keys brings up the popup displaying the brightness level, ...
2
votes
1answer
167 views

Incompatibilities between ASUS G771JW and Ubuntu 14.04 LTS

I've just bought an ASUS ROG G771JW laptop. I installed Ubuntu Desktop 14.04 LTS here. I tried installing the driver for the NVIDIA GTX 960M inside it, but after restarting I've got a 640 x 480 ...
1
vote
0answers
33 views

Screen dim after booting, need to suspend and resume to fix it

I'm on Ubuntu 15.10 and the screen is very dim on startup (even the manifacturer's splashscreen), and I need to suspend and resume it in orther to fix the issue. This has happened on 15.04 and 14.10 ...
3
votes
3answers
913 views

Maximum brightness is not maximum brightness

On my dual boot laptop I noticed that maximum brightness in Ubuntu and Windows 8 is totally different. In Windows 8 the screen is much much brighter at maximum level than it is at Ubuntu maximum level....
0
votes
0answers
22 views

Cannot change screen brightness and f.lux does not work either

There is a problem which I find very annoying. Of course I tried to solve it by googling first but nothing I tried worked so far. I recently moved to Xubuntu and I used to change my brightness ...
0
votes
2answers
3k 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
45 views

Can not get my brightness to change

Happened on Ubuntu before, I could not fix it. Now same issue with Xubuntu. What I've tried: I tried all those sloutions below. Not a single on of them worked. Apps like F.LUX does not work either ...
1
vote
1answer
230 views

Brightness Control : Asus X453MA : Xubuntu 14.04

I cannot adjust the screen brightness using the Fn keys. I have scoured the net to find a solution and so far this is what I have : I've tried creating/editing /usr/share/X11/xorg.conf.d/20-intel....
9
votes
3answers
7k views

Ubuntu 14.04 Brightness issue with nvidia Quadro

I recently upgraded from Ubuntu 13.10 to 14.04. Everything is fine, except the brightness of my laptop screen. When I change the brightness the screen simply does not respond. I figured this was a ...
0
votes
1answer
496 views

How to stop screen from dimming when power cable is unplugged?

On HP Pavilion with Ubu 14.04 LTS, screen automatically dims when power cable is unplugged. I sometimes want to have maximum brightness, even when power cable is unplugged, for personal reasons. How ...
3
votes
0answers
238 views

Brightness Ubuntu vs. Kubuntu and Xubuntu

On Kubuntu and Xubuntu the brightness of my monitor goes down to zero (i.e. the backlight got switched off). On Ubuntu this does not happen, the minimux brightness is still with backlight on and ...
1
vote
0answers
39 views

Unable to change brightness on lock sccreen

When at the lock screen, I am unable to adjust the brightness. This is particularly annoying if the screen is completely off (to save battery) and then locks automatically. You then have a black ...
0
votes
1answer
43 views

How to switch the screen illumination off and continue typing? [duplicate]

I can switch the screen illumination manually off by pressing Fn+F6 on my laptop keyboard. This is the same as automatically switching it off on idle as it can be set in the power management. The ...
0
votes
1answer
528 views

FGLRX drivers boots without backlight

Fglrx Not working after install (I know) HW : Asus K72j with AMD HD5470 laptop So, after installing the ATI drivers fglrx on my ASUS K72J laptop via CL my screen booted black. So at first I thought ...
2
votes
0answers
91 views

How to change screen brightness from commandline on Asus X453?

I'm using the Fluxbox window manager on Ubuntu 12.04. I recently got my desktop into a strange situation, and I'm not sure how! The situation was this: If I close the laptop screen lid and then re-...
0
votes
0answers
32 views

I no longer have access to the system menu

I was trying to change my brightness and issued a command sudo setpci -s 00:02.0 F4.B=80 Later I installed xbacklight using the following command sudo apt-get install xbacklight Then changing my ...