Questions related to screen brightness.

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10
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0answers
575 views

How to disable KDE's brightness OSD?

I am using lightum to automatically control the screen's brightness depending on the surrounding light (on a Retina MacBook Pro). The problem is, though, that KDE picks up the change and displays the ...
3
votes
0answers
327 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 ...
3
votes
0answers
208 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 ...
3
votes
0answers
240 views

Laptop brightness keys have a delayed effect or none

My laptop is a Gateway NV52L03H, Amd Radeon HD 7520G using the AMD FGLRX drivers. Most of my laptop's Fn (function) keys are working properly and as they should. The only one misbehaving are the ...
3
votes
0answers
540 views

Display problem when adjusting brightness in ubuntu 12.04

Recently I installed Ubuntu 12.04 on my Dell 1554 laptop. I was adjusting my screen brightness when this happened : this has become a recurring problem which is really annoying. I also want to ...
3
votes
0answers
600 views

Is it possible to change a laptop's screen-dimming capabilities?

My laptop is able to dim it's screen automatically until it is turned off by Ubuntu to save power, currently my dim screen button doesn't let me turn off my screen completely, my questions are: Is ...
2
votes
0answers
13 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 ...
2
votes
0answers
121 views

Brightness fn key adjustment problems

My brightness function key controls work after setting grub boot parameter to "acpi_osi=" but using them I cannot adjust the brightness higher than around 70% (there is empty bar left over and I can't ...
2
votes
0answers
53 views

Black screen after screen off on 13.10

I swtiched "Turn screen off when inactive for" to 3 minutes and Lock screen after screen goes off to on. The problem is that after the screen is off, when I try to come back I can`t do anything, the ...
2
votes
0answers
80 views

Brightness stuck at full after suspend HP Pavilion G6 12.04

I have an ongoing problem with my linux install where brightness seems to get stuck at full after my laptop suspends. Before suspend, the hotkeys work fine. After suspend the hotkeys still bring up ...
2
votes
0answers
1k views

Can't control screen brightness on saucy on Acer Aspire 5755 and Acer Aspire V3-571G

I can't control the screen brightness in Ubuntu 13.10. I tried the way that worked for me on 12.04, 12.10 and 13.04: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" but it doesn't work on 13.10. My ...
2
votes
0answers
1k views

Default Keyboard brightness is not working

I am running Ubuntu 13.04 64-bit on an Asus UX31A. To control the default screen and keyboard brightness after the start, I wrote this to the rc.local: echo 0 > ...
2
votes
0answers
148 views

Amd catalyst drivers increases screen contrast if laptop is on battery power

How to prevent catalyst drivers from increasing contrast if I switch from power supply to battery power? One oddity about this is that increase in contrast isn't shown in the drivers settings, e.g. if ...
2
votes
0answers
346 views

ATI HD 6320 ASUS Brightness doesn't change

When i press Function + [F5 or F6] to increase or decrease the brightness, the adjustment display on top right pops out and the slider moves but the screen brightness remains the same. i've done ...
2
votes
0answers
239 views

How to adjust brightness in games with Radeon driver?

I recently installed Lubuntu 12.10 on an older laptop, an HP Pavilion zv6000. It runs GREAT with one exception. I am unable to adjust the brightness in any games. I realize I am stuck using the open ...
2
votes
0answers
186 views

Bright/Dim Controls Wont Work In 12.04

I have a gateway nv54, and the controls wont work to brighten or dim the screen. The only way it does is if you change it to the setting you want, then restart the computer. Any suggestions/drivers ...
1
vote
0answers
42 views

Brightness keys do not modify actual brightness

I am really new to linux, sorry if this is an easy question. I recently installed Ubuntu on an old macbook with next to no issues, except for the fact that the backlight does not respond to the ...
1
vote
0answers
140 views

Ubuntu 14.04 Intel Brightness After Resume

I recently installed Ubuntu 14.04 on my Dell Inspiron laptop. Seeing that my hotkeys didn't work, I followed the instructions here and everything was going smooth. Except for when I close the lid to ...
1
vote
0answers
52 views

No brightness control in Brightness & Lock menu

I have Ubuntu 12.04 LTS 32bit in my Dell Latitude E5530 with Intel core i5 and graphics of Intel® Ivybridge Mobile x86/MMX/SSE2. I can change Brightness with Fn buttons but screen brightness reset to ...
1
vote
0answers
151 views

Cannot lower brightness in Ubuntu 14.04 with amd drivers

So I cannot adjust my brightness at all. It is always at the max and I have tried updating the grub with acpi_osi=linux & acpi_backlight=vendor & acpi_osi= & acpi_osi=Linux ...
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?
1
vote
0answers
40 views

How can I adjust the brightness on an HP Envy dv7?

I have an HP ENVY dv7. When I was running Windows 8, I could tweak the brightness to my heart's content. Now, I'm limited to only the first five clicks on the brightness bar. After that, same max ...
1
vote
0answers
35 views

How to decrease step of XF86KbdBrightnessDown and XF86KbdBrightnessUp handlers on Ubuntu

My hardware supports full 256 steps of screen brightness. Unfortunately Ubuntu's default brightness driver uses wrong steps: I need to increase granularity of steps in the dark end of the spectrum, ...
1
vote
0answers
32 views

Can't change brightness when installing

I'm kind of newbie in ubuntu. After several hours of research and trail, I finally managed to boot into Ubuntu installation screen via USB. However, my screen brightness is really really dim, I can ...
1
vote
0answers
79 views

fn + Up and fn + Down both increase brightness, notification not showing when doing so(Lenovo z570)

When I installed Ubuntu on my Lenovo z570, with Ubuntu 13.10 I couldn't manage to get the brightness to change. I read some of the solution to similar problems people had and I played around with ...
1
vote
0answers
55 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 ...
1
vote
0answers
26 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 ...
1
vote
0answers
117 views

Ambient light sensor support

I have a 2010 Sony Vaio laptop running Ubuntu 12.10, with an ambient light sensor installed to adjust screen brightness automatically. However, last time I checked, this was not supported by default ...
1
vote
0answers
47 views

Key Repeat functionality doesn't work on certain keys (Ubuntu 12.04)

I'm running Ubuntu 12.04 on a Macbook Pro and key repeat (when I hold down a key) is not working for any of the brightness buttons (keyboard backlight and screen brightness). Is there any way to ...
1
vote
0answers
58 views

Cannot change my Screen Brightness

though I am Pressing Brightness Keys on my laptop.The brightness is still not changing But Showing Change in Progress Bar of Brightness Setting. Hardware Spec: Intel Pentium Dual Core 2.1 GHz 64 bit ...
1
vote
0answers
64 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
0answers
231 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 ...
1
vote
0answers
673 views

Brightness 0% on Lenovo G500s on startup / boot

I've installed Ubuntu 12.04 on a Lenovo G500s Laptop. The screen is scrambled/shows weird artefacts during boot but that doesn't really bother me. What does is this: The screen's brightness is always ...
1
vote
0answers
144 views

Problems with sound/shutdown screen on Ubuntu 13.10

I'm running Saucy on my Dell Latitude D620 laptop and often when I press the 'mute' button the shutdown screen appears. It doesn't do it every time but often enough to be irritating. As I've been ...
1
vote
0answers
776 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
vote
0answers
85 views

Keyboard shortcut script not working

I finally gave up on getting my FN+up and FN+down keys to change my screen brightness on my laptop. I took a brightnessup.sh and brightnessdown.sh script and put them in /etc/acpi and then went to ...
1
vote
0answers
375 views

FN brightness keys only has 3 steps on laptop with nVidia Optimus

First, I'm a noob at linux. I've tried about everything to fix this but nothing seems to work. My FN keys for the backlight only has 3 steps - either its maximum, medium or minumum. ls ...
1
vote
0answers
148 views

Ubuntu Gnome 13.04 & Thinkpad L530: brightness buttons

Good day everyone, as mentioned I'm using my Thinkpad L530 running Ubuntu Gnome 13.04 as of late. I have two basic problems at the moment: Toggeling the screen brightness with fn+F8 /fn+F9 only ...
1
vote
0answers
319 views

Can't change the brightness with nomodeset

If I try and boot without nomodeset I go to a black screen. On this I can adjust my brightness using Fn + <-/-> but I can't actually do anything. I can boot with nomodeset but then I cannot change ...
1
vote
0answers
97 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 ...
1
vote
0answers
686 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
176 views

ubuntu 13.04 issues with screen and suspend

I installed ubuntu 13.04 yesterday on my sony vaio vpceg18fg(http://www.sony-asia.com/product/vpceg18fg). There are two problems. 1) I cannot increase/decrease screen brightness 2) after waking from ...
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
0answers
245 views

Backlight Control Bar not working

I upgraded my 12.10 to 13.04 and the brightness control has completely disappeared! In the settings tab all the options are available except the brightness control bar I have attached the screenshot ...
1
vote
0answers
751 views

Can't change brightness: Fujitsu Amilo li3710 & Ubuntu 13.04

I can't change the screen brightness on my Fujitsu Amilo li3710. Pressing the keys (Fn+Brightness up) or sliding the bar in Brightness&Lock has no effect. It worked on windows so the function is ...
1
vote
0answers
72 views

Brightness error on Ubuntu but not Windows

Every time I open my computer the brightness is always either on high or low, even though I already set it at about 65%. When I'm using Windows 8, I don't have this kind of error (maybe). How can I ...
1
vote
0answers
154 views

Able to adjust screen brightness on Live CD, broken after install

I am trying to use Xubuntu 13.04 on a Macbook Pro 6-2 (mid 2010). That's a Nvidia GeForce GT 300m. I'm positive this is a video drive issue. So what I've done so far: Tried installing the latest ...
1
vote
0answers
69 views

What command is being executed with the brightness control slider in system settings?

I've been finding a disappointing number of systems who's function keys do not work to control brightness. That said, if I go into the brightness settings within system settings I find a slider. I can ...
1
vote
0answers
330 views

Custom Keyboard Shortcuts Not Working

Hi I have created two custom keyboard short cuts as my brightness settings have disappeared since installing Nvidia Driver. These two short cuts are as follows: name: brightness_up command: ...
1
vote
0answers
288 views

Backlight control keys with nvidia driver work sometimes

I've got a Vaio S11 laptop with Nvidia 310M graphics running Ubuntu 13.04 with nvidia graphics driver (nvidia-310). Backlight control started working since I created a .conf file in ...