Questions related to screen brightness.

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5
votes
1answer
868 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 ...
5
votes
1answer
212 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
301 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
90 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
982 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
163 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
76 views

Toshiba u840: Hotkeys don't work after upgrading to 14.10

I've already tried the solutions presented here: Upgraded to 14.10, brightness control quit working - Intel HD 4400 and here: Brightness keys don't work on a Toshiba Satellite t110 with no ...
2
votes
1answer
69 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
88 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
256 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
550 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
743 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
22 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
146 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
143 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
44 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
83 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
192 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
1answer
51 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
135 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
148 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
158 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
99 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
169 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
892 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
185 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
775 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
93 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
968 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
347 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
134 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 ...
0
votes
0answers
86 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 ...
0
votes
0answers
59 views

Cannot change the amount of time before the screen turns off

I'm using ubuntu 13.10 and I cannot change the amount of time before the screen turns off. I access the settings and then the Brightness & Lock. I see a scrolling menu that looks like that: ...
0
votes
0answers
24 views

Ubuntu maxes brightness after lock

If I press Ctrl+Alt+L, brighness level sets to the maximum. It started from latest "Ubuntu base" update. How to disable this?
0
votes
0answers
52 views

13.10 No WiFi, ethernet, sound or brightness control after trying to install Spotify

I'm relatively new to Ubuntu (and this is my first forum post). I upgraded to 13.10 not too long ago and it's been working fine. The other day I tried to install Spotify through terminal using the ...
0
votes
0answers
18 views

Backlight brightness Changing hangs system

my laptop Dell Inspiron N5010, Installed Ubuntu 13.04, While changing Screen brightness my lap hangs and have to long press power button to shutdown, In Ubuntu version 11.04 this problem not come. Is ...
0
votes
0answers
47 views

Delay pressing volume or screen bright buttons

I have a ASUS NS53, running the last version of Lubuntu right now, 13.10. All the keys works fine, but when I press the volume buttons, or screen buttons, there is a random delay of 1 second (For ...
0
votes
0answers
55 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 ...
0
votes
0answers
36 views

Monitor turning off randomly. [Workaround exists]

I installed Ubuntu 13.04 on a machine with pre-installed Windows 8 using the options acpi_osi=Linux acpi_backlight=vendor I was unable to change the brightness of the system using the function ...
0
votes
0answers
35 views

xrandr works at startup, but when I type something, the bad brightness returns

I put a script for xrandr working at startup, its good. but when I type something, the bad brightness returns. When I re-put "xrandr --output LVDS1 --brightness 0.55" on a terminal, all is good. Why ...
0
votes
0answers
17 views

Need help diagnosing (random) dark screen

I have seen many threads on ubuntu 12.04 black screen (actually, mine is really dim screen. I can still see Guake terminal popping up the background, everything works fine, the screen is just really ...
0
votes
0answers
51 views

Brightness hotkeys stop working after closing lid

Apparently this is a common problem, but I haven't yet found a working solution. I know that the driver and my keyboard is supported, because after a reboot it works like a charm, but when I close ...
0
votes
0answers
141 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 ...
0
votes
0answers
357 views

Some Fn keys completely messed up in Toshiba Satellite L845

The brightness +/- fn key and the one for changing to an external monitor are messed up. If I try to press any the system will suspend for 3 seconds and then return asking my password to unlock the ...
0
votes
0answers
181 views

Followed instructions to fix brightness at boot using xbacklight, screen goes black after boot

So I followed the instructions in the top answer late last night: How do I set default display brightness? I'm running Ubuntu 13.10 on a HP Envy 15t quad and it was running perfectly other than the ...
0
votes
0answers
78 views

How do you get the display to automatically shut off in Ubuntu 13.10?

The display will not automatically turn off after 10 minutes, even though it is set to do so in the Brightness & Lock under System Settings. Running these commands in a terminal will cause the ...
0
votes
0answers
2k views

Brightness Control Keys on Sony Vaio not working on 12.10

Hi everyone i'm having a problem that for what i have seen its very common with the latest version of ubuntu. So I updated my graphics drivers on my laptop to the latest nvidia ones but now my ...