A backlight is a form of illumination used in liquid crystal displays (LCDs).

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0answers
476 views

Switch off laptop backlight when locking screen [duplicate]

Possible Duplicate: How can I disable backlight when I lock the screen? I'm using an IBM Thinkpad t61 and wish to have the backlight switched off when locking the screen.I've been told to ...
10
votes
2answers
9k views

Increase screen idle dim timeout

On Ubuntu 11.10, when on battery, the screen dims after 10 seconds of inactivity. This is annoying because it is too short. Is there anyway to increase this timeout? I know I can disable it, but ...
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4answers
4k views

HP Pavilion g6 laptop backlight turns off at login screen

I've seen posts like these but they all seem to mention the inability to get the brightness back up. I can turn the brightness back up with my keyboard, but it's an annoyance that I'd like to get rid ...
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vote
1answer
632 views

Netbook running ubuntu 11.10 screen backlight never comes back after it dims [closed]

My netbook running 11.10 ubuntu goes to sleep after 10 minutes of inactivity as per settings. After the screens dims, I cannot get the backlight to come back on. I can see the faint text of the ...
0
votes
1answer
310 views

Backlight keyboard commands working on live CD but not on installed ubuntu

so basically when i put the ubuntu installation disc of Ubuntu 11.10 inside and run a Live session everything works fine (i can press Fn + Arrow Up and Fn + Arrow Down to control the screen ...
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vote
3answers
1k views

Screen brightness not changing on a Packard Bell tx86 [closed]

I'm currently running ubuntu 11.10 on my Packard Bell tx86 when I try and use the fn key to change brightness, the icon thing appears in the top corner of the screen and the bar increases/decreases in ...
2
votes
2answers
573 views

Backlight driver /sys/class/backlight has two entries?

System: Dell N4110 Ubuntu ver: Oneric My /sys/class/backlight has two entries acpi_video0 and intel_backlight? Is it normal to have two entries here? When I try to change the screen brightness ...
3
votes
1answer
3k views

How do I make Fn+f2/f3 change the brightness on my HP dv7-6135dx?

The problem described below riddled me for quite a while and couldn't find a straight forward answer anywhere online. I have found a solution and I would like to use this post as a documentation ...
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3answers
2k views

Keyboard backlight sensor doesn't work on a Sony Vaio VPCS116FG

I have a VAIO laptop (VPCS116FG, S series). Its keyboard has sensors that can detect how bright the surrounding is, so it automatically turns on the backlight in dark places such as airplane cabins. ...
3
votes
1answer
850 views

Altering the backlight dim timeout on a Thinkpad laptop

It seems something else than gnome-power-manager manages the backlight dim timeout on Thinkpads, maybe thinkpad-acpi. How do you alter the timeout from 5 seconds? (which is very annoying)
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votes
2answers
1k views

How do I re-enable the backlight?

Since Oneiric, if I leave my machine (HP Mini 110 netbook) unattended and it goes into power-save mode, the backlight gets disabled. How can I turn it back on? Note that the keyboard backlight ...
15
votes
4answers
23k views

How do I set default display brightness?

Is it possible to set the default display brightness so you don't have to re-adjust it everytime you reboot? My laptop display is killing my eyes at the login screen already because it starts at 100% ...
0
votes
2answers
743 views

Dimming the backlight is irreversible on a Samsung Q210 notebook, what do I do?

I'm new to the community, although I have been using Ubuntu since 2010. I have a Samsung Q210 notebook; Specs: Intel® Core™2 Duo CPU P8400 @ 2.26GHz × 2 4 Gigs RAM Nvidia 9200m GS (although system ...
1
vote
2answers
3k views

How do I enable the backlit keyboard on an ASUS G53SX or G53SW?

Does anyone know how to enable backlit keyboard on ASUS G53SX? Edit as of Feb 18, 2012: As Qw4z1 mentioned here's a trick to enable the backlit brightness: su (enter root password) echo 0x00050021 ...
1
vote
1answer
944 views

Backlight no longer works on upgrade from Ubuntu 10.10 to 11.04

I think something changed in maybe the Linux core which has broken Ubuntu and practically every other Linux install on my laptop. The problem is that suddenly the back-light doesn't work when I run ...
5
votes
5answers
7k views

Backlight can't be turn on in Acer Aspire 4736

When I booted up my newly installed Ubuntu 11.04, I discovered, to my dismay, that the backlight was off by default. The keyboard shortcut (which is Fn+F6 on my Acer Aspire 4736) for turning on the ...
3
votes
5answers
2k views

Trigger Screensaver/Off monitor

IS it possible to somehow trigger screensaver or make the monitor sleep/off? I want to disable screensaver/monitor sleep as it gets annoying at times, however I still want a way to save power via such ...
3
votes
1answer
747 views

Can't change Backlight brightness in Asus ul20A [closed]

I have Asus ul20A and what I think is the newest netbook version of Ubuntu, and I can't seem to find a way to change my screen's brightness. It's a shame, because it takes hours off my battery life. ...
2
votes
1answer
1k views

Antec Fusion Black LCD won't turn off on system shutdown

I've been struggling a while with getting the iMON LCD/IR-receiver on my Antec Fusion Black case to shutdown together with the system (XBMC Live 10 - ubuntu based). But it won't. When it's turned off ...
4
votes
1answer
699 views

Monitor turns off when I unplug from AC power, how do I stop this?

I'm running natty on a 13" macbook pro, and when I unplug the AC power sometimes, the monitor turns off. Sometimes I can unplug the AC adapter and nothing happens, but as soon as it starts happening ...
7
votes
1answer
8k views

How to stop gnome-power-manager from changing the global backlight setting?

After installing Ubuntu on my ThinkPad T510, the GDM screen and GNOME session would always start at 100% brightness. I quickly found out, that this can be controlled via gnome-power-preferences, but ...
2
votes
3answers
1k views

Turning off the backlight on the console [closed]

I'm using an IBM Thinkpad X21 as a 3G router. It's running a server install of lucid. The laptop has the lid up most of the time. There is no X, just a plain console. The colsole blanks itself, but ...