Questions related to screen brightness.

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7
votes
0answers
414 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
164 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
218 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
498 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
576 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
39 views

Stop Screen Dimming After 60 Seconds (MacBook running 12.04)

I'm running Ubuntu 12.04 on a MacBook air - everything works fine, apart from the fact that the screen dims after 60 seconds of activity. Is there any way to stop this? My computer is on mains ...
2
votes
0answers
47 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
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
130 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
318 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
196 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
184 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 ...
2
votes
0answers
4k views

Fn-keys stopped working on a Lenovo Thinkpad Edge

I'm running 12.04 on a Lenovo ThinkPad Edge. I'm having these possibly related issues with things that worked perfectly when I installed Ubuntu: Most of the Fn-keys worked seamlessly after I freshly ...
1
vote
0answers
14 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
8 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
17 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
49 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
41 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 ...
1
vote
0answers
30 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
23 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
44 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
33 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
34 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
54 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
172 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
576 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
141 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
693 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
70 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
139 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
239 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
86 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
622 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
51 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
232 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
714 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
68 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
149 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
64 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
311 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
280 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 ...
1
vote
0answers
1k views

Asus eeePC - Screen Brightness Issue

I have ASUS 1015CX Netbook on which I have installed Ubuntu 12.04LTS. All seem to work fine however there is an issue with brightness settings; changing the brightness (both through settings and with ...
1
vote
0answers
651 views

Brightness and touchpad issues on an Acer Aspire 725

I have an Acer Aspire One 725 running Ubuntu 12.04 LTS, and it flashes the screen when not charging. The same happens when I want to change the brightness of the screen (whether or not connected to a ...
1
vote
0answers
213 views

Is there a way to push contrast, brightness and saturation in X11 for arbitrary applications?

I'm looking for something like Compiz-style controls for opacity, brightness and saturation which can push values for contrast, brightness and saturation beyond the 100% limit in Compiz. Basically, ...
1
vote
0answers
51 views

Graphics driver troubles

I have an hp pavilion g6 and have just recently switched to ubuntu 12.10 but im having issues with the graphics driver, the graphics are really slow and the brightness wont change and is stuck on max. ...
1
vote
0answers
192 views

How can I change brightness on Toshiba Satellite c855-21m?

I can't change the settings for brightness. In fact, it doesn't matter if the Fn keys work or not. I would like just to decrease brightness. For example, using brightness-indicator I get a message ...
1
vote
0answers
94 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
0answers
196 views

Auto Brightness depending on power source

Is there any way to make Ubuntu remember different brightness settings when I'm plugged in and when I' plugged out like windows? I dim the brightness to the minimum when I'm running my laptop on ...