CentOS 5 Hardware :: How To Adjust / Increase Laptop Brightness

Apr 23, 2011

I want to know how can I increase the brightness of my LCD screen. I have a toshiba sattelite A500-1f4 laptop with nvidia geforce gt 330m video card. I work on centos 5.6 x86-64 system.

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General :: Unable To Adjust Brightness On Laptop?

Apr 24, 2011

I have acer Aspire 5742 with mint 9 {64/32 bit both} installed.. I cannot adjust brightness of my laptop in any of them.. The shortcut keys are working fine as increasing or decreasing through keys show icon increasing or decreasing brightness but it is not affecting brightness in anyway.

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Ubuntu :: How To Adjust Brightness

Jul 31, 2011

I just recently installed Xubuntu 11.04 and I want to adjust the brightness levels. I tried using the corresponding buttons on my laptop, but they aren't working. Where can I find the brightness settings on the OS?

I tried this thread: [URL] , but "Power Manager" didn't have that setting.

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Fedora :: Adjust Screen Brightness

Mar 13, 2011

Running F14 on Dell Studio 14 with LCD screen and US keyboard selected. After initial power on the keyboard selection of "Windows Key" + F4 will dim the screen and the "Windows Key" + F5 will brighten the screen. When being used, either combination will also show a meter on the screen to display the adjustment of the brightness. When the lid is closed the computer is set to suspend by default. After the computer is brought back from suspend the keyboard short cuts no longer control the brightness and the meter does not appear on the screen. I have not found any other way to control the brightness and I have to restart to get the keyboard short cuts to work again.

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OpenSUSE :: Adjust The Brightness In Gnome?

Oct 4, 2010

How do I adjust the brightness in Gnome?

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Ubuntu :: Cannot Adjust Screen Brightness V 10.04

Jun 3, 2010

I cannot adjust the screen brightness in the power management menu. I can access the window and move the scroll bar, but there is no change.

I am on v 10.04 32bit , a Benq joybook s35.

It was working just fine on the previous version of ubuntu.

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Ubuntu :: Can't Adjust Screen Brightness

Jun 23, 2011

My computer (Samsung R580 N330M)seems doesnot adjust brightness both power manager and configuration file in /proc, I tried NVIDIA setting and it works,but I think it changes the color,not LCD. is it caused by driver problems?

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Ubuntu :: Can't Adjust Display Brightness

May 28, 2010

Ubuntu 10.04 lucid with gnome-power-manager installed on a HP elitebook 8530p. FN keys and desktop display applet will not adjust the display. when I first boot my display is pretty bright with either it plugged into ac or not until i either plug or unplug for the first time then the display dims some, but will not get bright again plugged or unplugged, also /proc/acpi/video/DGFX/LCD/brightness shows it set to 100% at all times it never changes. I'm using the ati driver tried running aticonfig --acpi-services off, but it made no difference. It worked fine in karmic and ibex. I'm out of ideas on how to fix this one. Can anyone point me in the right direction on what to try next?

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General :: Any Way To Adjust Screen Brightness

Nov 12, 2010

I have a low end 7" CnMBook running modified Debian OS. Is there any way to adjust the screen brightness, if possible by adding a Fn command Up and Down?

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Slackware :: Adjust The Monitor Brightness?

Feb 24, 2011

Researching this problem, I find very often this solution:

Code:
echo -n 100 > /proc/acpi/video/VGA/LCD/brightness
Unfortunately, I don't have that on my old PC:
Quote:
ls -F --group-directories-first /proc/acpi/
button/

[Code].....

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Debian :: Can't Adjust Screen Brightness Using Fn Keys?

Nov 24, 2015

When I first install debian I couldn't change the screen brightness at all not manually nor with function keys, but I tried some of the solutions I found on the internet and now I can change the brightness manually (from the power management or the battery icon) but when I use the function keys it takes them like 2 to 3 minutes to respond and cause the system to hang (even mouse curser not responding) and then I'm forced to manually reboot the system, here is some information :

Code: Select all$ ls /sys/class/backlight/
acpi_video0  intel_backlight
 
Code: Select all$cat /etc/default/grub
# If you change this file, run 'update-grub' afterwards to update
# /boot/grub/grub.cfg.
# For full documentation of the options in this file, see:
#   info -f grub -n 'Simple configuration'

[Code] .....

And I've tried this:

Code: Select allsudo -i kwrite /usr/share/X11/xorg.conf.d/20-intel.conf

And I add the following in this file

Code: Select allSection "Device"
        Identifier  "card0"
        Driver      "intel"
        Option      "Backlight"  "intel_backlight"
        BusID       "PCI:0:2:0"
EndSection

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Hardware :: Adjust Brightness Of A CRT With No Physical Controls On It?

Jan 2, 2010

dont say xgamma, i need brightness/contrast not gamma

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Fedora :: Adjust LCD Brightness (backlight) From Command Line?

Jul 10, 2010

I'm writing a script to toggle LCD backlight on my laptop between minimum and previous/current level. I will then assign this script to a button. For this I need to be able to adjust backlight by using some command line utility. Also, this must be possible to be performed by a regular user.

What I have already tried:

1) The "xbacklight" utility. This didn't work. Program reported something like "no outputs found".

2) Used "acpitool -l <backlight_level>". This didn't work either.

3) The "echo -n 100 > /proc/acpi/video/VGA/LCD/brightness" works only when I am root. Changing permission of the file to allow writes by a user only valid until reboot. After reboot I need to change permission again, so this approach is not good either.

What works on my laptop, but with GUI:

1) Adjusting LCD brightness in "System->Preferences->Power Management" works.

2) Adjusting brightness with Gnome Brightness Applet works. However, after changing brightness with applet it says "Cannot get laptop panel brightness" and shows red crossed circle icon. Even after applet shows this message, it is possible to change the backlight level. It seems like the brightness level cannot be retrieved by the applet/system, but it can be set.

I can see that it is definitely possible to adjust LCD brightness through software because of the 2 things above, but how do I allow any user to change it from command line?

So, what are my other possible choices for changing backlight from command line?

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Ubuntu :: Cannot Adjust Brightness - No Proprietary Drivers Detected

Aug 10, 2011

I just cannot adjust the brightness. When I use Gnome bar's brightness applet or the combination of keys on my laptop,the bar moves but there is no effect. Its too bright for me, I am getting blind for real.
Acer Aspire 5742g
NVidia GeForce GT540
No proprietary drivers detected
Ubuntu 10.04 LTS 64bit

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General :: Unable To Adjust The Brightness Of The Netbook Screen?

Apr 19, 2010

Long, sad story made short. I have a Samsung Netbook running Windows XP Home, SP3. I set it up to dual boot with Ubuntu, just so I could play around with Ubuntu. Well, Ubuntu started giving me trouble: my internet connection went south, I was unable to adjust the brightness of the Netbook screen, etc., and when I looked for troubleshooting help on the internet, it was all Greek to me as it involved working with Terminal.

I did a search for removing a partition in Windows XP and found "How to use Disk Management to configure basic disks in Windows XP" on the Microsoft and followed the instructions there.

[Code]...

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General :: Windows - Adjust Screen Brightness Automatically At Night?

Jun 7, 2010

Can anyone recommend an application that will automatically dim my monitors when it gets dark at night?

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Ubuntu :: [lucid] Can't Adjust Screen Brightness Using Function Keys?

May 3, 2010

I have just upgraded to xubuntu 10.04 and although some function keys are working (like volume control), the screen brightness function keys aren't (the screen brightness is at top level and can't be reduced)Notes:I am using a Compaq 610 laptopThe brightness keys are working on Ubuntu 10.04 (live session)How can I fix this?, and at least is there any other way to adjust screen brightness?

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Ubuntu :: Increase The Brightness Of Display In 9.1?

Dec 26, 2010

i have a desktop computer with a fresh install of ubuntu 9.1. the display is too dark to see pictures and several websites as well. is there a gui tool for color and brightness correction, or do i need to do something special?

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Fedora Hardware :: Can't Adjust Brightness Of Display On Buttery Power Mode

Feb 9, 2010

Can't adjust brightness of display on buttery power mode Have no controller, such as in the tab "On AC Power"

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Ubuntu Multimedia :: Webcam Brightness Increase ?

Mar 10, 2010

Ubuntu, in its most recent version (9.10) has stopped to support certain webcams that it previously supported with just plug-and-play simplicity. After many searches on the web, I could somehow managed to make my old webcam (Logitech QuickCam Traveler) work. Skype couldn't see it, but adding the command bash -c 'export LD_PRELOAD=/usr/lib/libv4l/v4l2convert.so; skype' to the launcher, worked the miracle.

Whatever, the image was very dark, and in a new web search I found a solution [url] As stated there, I opened the Terminal and entered:

Code:

All is OK, brightness gets up, I can finally see my face (not a great view, but I somehow got away with it) in Skype's test, but I need that change to be PERMANENT, so every time my parents open Skype (it's my parents' computer) they won't have to mess with Terminal (they're 69 and 72 years old, it's their first computer, so I CAN NOT expect them to use Terminal, they just want to open Skype and use it, as they did when they used Windows (until two weeks ago, when I finally convinced them to switch).

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Hardware :: Increase LCD Monitor Brightness With Software?

Aug 6, 2010

I have a ViewSonic V1912Wb-4-- It recently got broken. I got to it repaired. However I cant force the brightness or the contrast of the monitor to increase or decrease, it is just stuck!

In my WinXP I can adjust this with software-- however I cant change anything on my slackware 12.2!

Do you think I need to install softwares like Argyll CMS?

I am using the default graphics drivers. I cant find anything for my built in graphics card of my Asus motherboard P5S-MX SE.

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Ubuntu Multimedia :: How To Adjust Color / Brightness / Contrast Of Flash Video Inside Browser

Dec 14, 2010

Sometimes while watching ..... vids in firefox I often want to adjust the brightness/contrast/saturation levels.I didn't see any addons for the purpose.Is there a way to do this ?I have visited web sites with embedded flash players which includes these controls.

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Ubuntu :: Aspire One 751h - 1948 Can't Lower/increase Brightness?

Jan 17, 2010

EDIT: I finally figured out how to do it - xbacklight -dec 10 lowers, xbacklight +inc 10 increaces. I'll use ubuntu tweak to get the shortcuts. I got my self a new lappy, and Acer Aspire One 751h-1948. After that, I installed Ubuntu Karmic on that, while leaving a 20GB XP partition. I configured it's Intel GMA500 Poulsbo video card, so now I can use it at the native 1366x768 res. Most of my fn keys work, other than one very important one, and here lies my problem; The brightness keys dont work(fn+left/right arrow). I've searched the net for a long time, but I still can't find a solution that works with karmic - perhaps i should downgrade?

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Ubuntu Multimedia :: Can't Control Brightness / Show Brightness Popup / Screen Brightness Don't Work

Mar 3, 2010

I Install Ubuntu 9.10 and I can't control Brightness, show brightness popup (Fn+F5F6) but screen brightness don't work, I install NVIDIA Driver Linux-x86_64 version 190.53, modiffed xorg.conf.

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Debian :: Laptop Brightness Gets Set To Maximum On Boot

Jun 10, 2010

My laptop brightness gets set to maximium each boot.

Just wondering if this is the case for other laptop users. I have a Lenovo Thinkpad SL500 (GeForce 9300M GS) and am running Testing.

Ideally I'd like it to remember my last setting (which is usually the lowest). It'd be nice not having to turn it down each time I reboot/power-on.

It actually starts off at a low setting but during the boot process (before gdm and just after the "Waiting for /dev" line I believe) it suddenly gets set to max.

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Debian Hardware :: 7.8 - Laptop Brightness Control

May 7, 2015

I have an issue with Debian 7.8 (wheezy) on my laptop. I've had to reinstall Debian on my laptop and since then I've had issues getting brightness controls to work properly.

It's a Core i3 370M processor with Ironlake graphics, I've had this issue before with Ubuntu and I sought [URL] ..... I've tried the steps that worked for Ubuntu (thinking they'd be the same as they're both Debian based) and it hasn't worked.

What should I try to get it to work? Since I have updated my grub config (as per the Ubuntu fix), brightness doesn't work at all and my screen now tiles ever so slightly when moving the cursor from side to side. I'll revert those changes if need be or if this issue cannot be resolved.

I've tried to install the Intel graphics drivers from 01.org, however I get an issue with libglib dependencies not being satisfied ( libglib2.0-0(>=2.37.3) ) that how to resolve.

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Ubuntu :: FN Keys Of Laptop Brightness Does Not Work

Jul 25, 2011

I have installed Xubuntu 11.04 on a HP Probook 4510S and the FN Keys of brightness only works when I on the login screen (gdm). Until I enter to my desktop the FN Keys stop Working. This is a XFCE Issue? I have another Laptop, a IBM THinkpad X40, with the same Xubuntu 11.04 and the FN Keys works perfect! Even the keyboard light Works! I think this is a ACPI related problem, I google it the problem with out a specific issue like this. The only thing that I can do it is use of xbacklight when I'm on my session.

root@xavierc-lt-xub:~# ls /proc/acpi/
ac_adapter battery button event wakeup
root@xavierc-lt-xub:~#

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Fedora Hardware :: Can't Change Brightness On M11X Laptop

Jul 4, 2010

i have an alienware M11X and i have installed fedora. I have a problem with brightness. When i press hotkey for increase or decrease brightness i see the bar increase and decrease on my screen but brigthness don't change and stay maximal. I have tested a live cd ubuntu and it's work.

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Ubuntu :: 9.10 - Sony F Series Laptop Brightness Control?

Feb 23, 2010

I got a new Sony F series laptop and struggled thru getting the video card to work, the wireless card to work, and the volume to work on 9.10. The brightness controls have stumped me though. The screen is on full bright and the brightness controls (FN+F5 & FN+F6) make the applet display change but the actual screen brightness does not change. I have also tried the brightness applet in the panel and that also has no effect on actual screen brightness.

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Ubuntu :: Brightness Not Changing On Sony Vaio Cw Laptop?

Mar 21, 2010

I am having problems with the brightness control on my sony vaio laptop, at virst when i upgraded the driver for the VGA card the whole screen went blank, I had to port a bin file from windows and write my own EDID file to get it to work (nVidia GT 230M), but I am having problems with the brightness, although ubuntu does read the input from the keys (FN+...), the brightness refuses to change, adding the brightness applet to the taskbar does not work either. I really need to be able to change my brightness because the battery usage is off the charts.

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