Questions related to screen brightness.

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5
votes
1answer
218 views

Brightness resets to zero on an HP dm4 Pavilion

Everytime I reboot my HP dm4 Pavillion the brightness is zero on my screen. BTW I use a Ubuntu 12.04..
4
votes
1answer
399 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...
4
votes
1answer
2k views

Specific function keys not working

My Toshiba C800 laptop (12.04 LTS desktop) has special function keys as follows: fn + : F2 -> BRIGHTNESS DOWN F3 -> BRIGHTNESS UP F4 -> DISPLAY SELECT F5 -> TOUCH PAD on/off F6 -> PREVIOUS ...
3
votes
1answer
97 views

Brightness is reset to Maximum on every Restart in Ubuntu 13.10

I have upgraded from 13.04 to 13.10. After every reboot the brightness is set to maximum. Is there any solution?
3
votes
1answer
1k views

I can't modify the screen brightness on Xubuntu 13.10

I got this problem with brightness on my fresh xubuntu 13.10 install.. It ain't inc/decrease the screen brightness when pressing Fn+F5/F6 !! I've tried some solutions like setting these values in ...
3
votes
1answer
191 views

Dim inactive compiz ( set speed of the effect)

I just enabled the dim inactive effect in compiz on ubuntu 13.04 and my question is: How can I speed up this effect? With this I mean how can I reduce the time it takes to make the background less ...
2
votes
1answer
70 views

Adjusting default brightness upon boot

When I boot to ubuntu 12.04, the back light on my display turns off and I have to press the increase brightness button 4 times to get it to the desired brightness. Is there a terminal command I can ...
2
votes
1answer
92 views

Xubuntu 13.10: Only four levels of brightness?

Why do I have only four levels of brightness on my Dell Inspiron laptop, selectable by Fn+ArrowDown/Up? In Linux Mint Mate, I have 7 or 8, and so I have under Windows, on the same machine? This is ...
2
votes
1answer
1k views

Auto-change in brightness after reboot Ubuntu 13.10

I have noticed that after I set the brightness (High to Low) in Ubuntu 13.10 and then after when I do my work. After rebooting up the PC, the brightness again turns to High. I'm literally tired of ...
2
votes
1answer
280 views

How can I enable brightness control on my iMac 11,3?

I have Apple iMac 11,3 (27" LED, purchased in 2011) with a Radeon HD 5750 graphics card. When I installed Ubuntu 12.04 LTS, everything works fine except brightness control. I want to mention that I ...
2
votes
1answer
569 views

Toshiba Satellite L645D screen brightness does not work onUbuntu 12.04

I've installed Ubuntu 12.04 on my Toshiba Satellite L645D and the screen brightness does not work, any suggestions??? please help!!
2
votes
1answer
2k views

How do I get brightness controls working properly on an Eee PC 1001P?

Is there a solution to the low screen brightness issue with the Eee PC 1001P and release 12.04? When I use the brightness control, the screen goes through three adjustment cycles of dark to semi ...
2
votes
1answer
750 views

Screen brightness in Ubuntu not working

Hardware: HP DVD6t, AMD Radeon 6700 OS: Natty 32-bit. I have researched a lot on this and basically most of the solutions that are on the internet / stackexchange revolves around the brightness ...
1
vote
1answer
117 views

Dell Chromebook 11 - unable to set backlight and /sys/class/backlight/ folder is empty

I have installed Lubuntu on my Dell Chromebook 11 and everything works except for the backlight. Can't set the backlight with the brightness keys, neither with xbacklight,xdotool or any other GUI ...
1
vote
1answer
372 views

screen brightness control not working: Lenovo g50-45: AMD Radeon: Ubuntu 14.04

I've a Lenovo G50-45 machine with AMD processor [Radeon APU A4-6000 with R2 Graphics]. I tried the solution from Rmano but no success. Using Ubuntu 14.04. I tried the solution pasted here: Ubuntu ...
1
vote
1answer
88 views

Lubuntu Display brightness

Just installed Lubuntu 14.10 on my machine. I cannot change the display brightness. I have a slider in my power settings but it does nothing. Cannot post screenshot of the slider because of no rep ...
1
vote
1answer
169 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 + ...
1
vote
1answer
185 views

Disable brightness and keyboard back-light at start-up?

I'm new with Linux and I have an issue that I have being researching and have not been able to find a solution so far. I was wondering if any help can be given. I have an Asus Q500A with Win-8 and ...
1
vote
1answer
348 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 ...
1
vote
1answer
289 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 ...
1
vote
1answer
53 views

What to choose as application to launch Brightness-Controller?

I'm new in *ubuntu. I'm using lubuntu 14.04. When I'm trying to download Brightness Controller it is saying This link needs to be open with an application. Which application to choose? Actually ...
1
vote
1answer
447 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
86 views

Change the default screen brighthness

Hi im using Xubuntu 14.04 with linux 3.13.0-24 every time my screen goes dark ( activating the screen saver or so ) my current screen brightness is set to some default value how can I change ...
1
vote
1answer
58 views

Can't connect to WiFi and adjust brightness after crash

Disclaimer: I'm pretty new to Ubuntu; Lenovo G505s; Ubuntu 13.10 I was doing an update via the Software Updater when suddenly my laptop just hangs. I had to force shutdown (holding the power button). ...
1
vote
1answer
145 views

How to retain LCD brightness after reboot

I frequently test different linux Distros and recently found a 'feature' that I would like to know how to turn on in Ubuntu. In my testing of Fedora 20 I noticed that it retained the LCD brightness ...
1
vote
1answer
170 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 ...
1
vote
1answer
211 views

How to enable notifications while changing brightness and/or volume?

I'm using Ubuntu Gnome 13.10 (Gnome Shell 3.8). When I change the volume or brightness via hotkeys or my volume +/- buttons on my keyboard I do not get the notification in the middle of the screen. ...
1
vote
1answer
114 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
211 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 ...
1
vote
1answer
934 views

Unable to change display brightness with Function keys or Brightness and Lock application in Ubuntu 13.10

I am having problem with Ubuntu 13.10 brightness control. My brightness shortcut keys (Fn + F5/F6) worked in 12.10 and 13.04 but they have stopped working in 13.10. I am using Sony Vaio SVE15113ENB ...
1
vote
1answer
195 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
1answer
810 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: ...
1
vote
1answer
100 views

Ubuntu don't remember my brightness settings

I installed Ubuntu 13.04. I notice that when I lower the brightness there is a lowest brightness point and when I lower further than that the brightness will increase. And why every time I restart the ...
1
vote
1answer
1k 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 ...
1
vote
1answer
372 views

How do I fix the the brightness controls on a Samsung RV520?

I'm running Ubuntu 13.04 on my Samsung RV520 with Nvidia GT520M but it looks like my screen's brightness is set to a value close the minimum! Even though I can see the brightness bar increase or ...
1
vote
1answer
158 views

How can I turn down the sensitivity of my brightness slider?

How can I make the brightness change in smaller increments? I red this before (How to increase the screen brightness control sensitivity?), but I didn't find the solution to help in my case. My ...
1
vote
1answer
451 views

Backlight Indicator not Working with Nvidia Driver

I have a Thinkpad T420 with Nvidia Quadro NVS4200 running binary 319.12 driver. I am using Ubuntu 12.04 with Cinnamon. The display works fine, and the brightness up/down controls also work in ...
1
vote
1answer
311 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
1answer
769 views

Brightness setting in Lenov Thinkpad Edge E530 after update to kernel 3.8 not working

I used to run Dream Studio Unity (ivy bridge version) on sandy bridge on Thinkpad Edge E530 (B960 proc.), which worked OK, but after it updated itself to kernel 3.8 no more enables to set display ...
1
vote
1answer
460 views

Dell display problem Ubuntu 13.04

Since I upgrade from ubuntu 12.10 to 13.04 I can't change the brightness of the display, it remain in the darkest possible mode. I have a Dell 3721 laptop. Any advice? @Dell:~$ lspci -nn | grep VGA ...
1
vote
1answer
2k views

Brightness buttons not working properly

After upgrading from 12.10 to 13.04 the brightness control buttons on my laptop(Lenovo E430) are not working properly - when I try to brighten the screen, nothing happens, but when I try to dim the ...
1
vote
1answer
1k views

Modifying brightness control shortcut key bindings

I have a Toshiba Satellite R830 laptop with Ubuntu 13.04.1 64 bit. The Fn + F6 and Fn + F7 buttons adjust brightness until I put my laptop on sleep. On wakeup they don't work any longer. On Ubuntu ...
1
vote
1answer
207 views

Changing Brightness on netbook

I am using Asus Eee PC R051CX. I am unable to boost up brightnes of my screen. While I was trying ubuntu 12.04 from live img from usb stick it was good, but after installing on local hard disk screen ...
1
vote
1answer
245 views

How to turn down the brightness on my Dell mini laptop?

The keys that show the brightness symbols are 9 and 0, but when I hold down Shift and press these, it only shows ( and ). Help!
1
vote
1answer
736 views

Toshiba C850 brightness problem

I have recently bought a Toshiba Satellite C850 laptop. I've managed to install Ubuntu 12.10 on it and everything works fine (this site helped me installing the wireless driver). The problem is that ...
1
vote
1answer
482 views

Sony Vaio brightness [Radeon 7500M/7600M Series] in ubuntu 12.10

I bought a Sony Vaio with windows 7 preinstalled. Now I have a lot of problem installing Ubuntu, but I was able to install Ubuntu, but now the brightness doesn't work as needed. With lspci I get: ...
1
vote
1answer
105 views

Easy brightness control

I came from linux mint they had a really nice applet for adjusting the brightness. Is there something like that, or can it be done by hotkeys or something? I am on ubuntu 12.10.
1
vote
1answer
834 views

Does the order of kernel parameters matter when adding acpi_backlight=vendor?

I am running 12.10 on an HP DV7-6197CA. I had fan issues which I was able to correct by changing this line in GRUB; GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" to: GRUB_CMDLINE_LINUX_DEFAULT="quiet ...
1
vote
1answer
511 views

Sony Vaio VPCCW - Brightness Changes automatically when using browser

Screen brightness changes automatically when I am using my browser. There is question about this matter but it is closed for being too specific . I think this is a general issue about Sony Vaio ...
1
vote
1answer
824 views

Brightness works with Function (FN) Keys in Lubuntu 12.10 but not Ubuntu 12.10

I have a Toshiba Portege R930 laptop and installed Lubuntu 12.10 through Wubi and then installed the Ubuntu-Desktop package afterwards. When in Lubuntu, pressing FN+F6 and FN+F7 lowers and increases ...