Ubuntu Installation :: 10.4 Can Not Controll Brightness
May 4, 2011
Brightness Problem Dell Inspiron 14R N4010 Problems.I freshly installed Ubuntu 11.4 on my laptop Del Inspirion 14 N4010 but in my laptop there is Brightness controll problem. I read all of forum posted matter for brightness but it didnt work.Brightness up down keys moves the brightness slider around but doesn't change the actual brightness. I am also not able to change the brightness using the power management tool also.
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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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Jul 7, 2010
I am running Ubuntu 10.04 and I am thinking of setting up a few X10 lights so that I can turn them on and off at certain times of day/night. I am not to concerned with turning stuff on and off via the web but that might be a nice option. I want to keep it as simple as possible. I have looked over the forums and web but I am not sure about how to start and keep it simple.
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Jan 6, 2011
I'm using Lucid laptop-edition on an HP dv6000 laptop. I wanted to tweak the bass-treble so I installed a few volume control apps from the software center (ALSA mixer, "Volume Control", JackEQ, maybe a few I don't remember).They worked right after installation. but after restarting I have no sound. I can play with the volume all I want but I can't hear anything. When I open System/Preferences/Sound there are no devices in the hardware tab.Here is what lshw says:
Code:
bob@bob-laptop:~$ sudo lshw -c sound
[sudo] password for bob:
[code]....
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Feb 9, 2010
I'd been trying to get into Linux before I bought it so I figured that I would try to get it onto my new Mac so that I could use it wherever I am. I decided to try Debian Lenny 5.0.3 a whirl after reading about all the different distros available. I've successfully installed it and I can get to it with rEFIt, and I have quite a few things working such as the video drivers and wifi. However, I've had trouble getting it to a level where it'd be usable away from home. Here are the main problems I'm worried about:
1) I installed pommed but I still can't use the brightness keys to change the screen brightness. I'm not sure if there's some other workaround for this?
2) I tried some recommended power management packages (gnome-power-manager) but it doesn't seem to be accessible or functional right now. I don't have any way to control it or get to it that is obvious to me. Is an icon or anything supposed to appear on the task bar when you install or what? Getting some sort of power management on here is important because it gets really lousy battery life otherwise.
3) Being a Macbook, there's no right-click button. Multitouch would be really nice (two-finger scrolling!) but I'd be OK with ANY way to right-click with the touchpad. I have a wireless USB keyboard/mouse combo that works at home at least . . . right out of the box too!
4) I've seen some packages called the Mactel PPA, but they are made for Ubuntu. Since Debian and Ubuntu are so similar, is there any way to make those work on Lenny? I think that if I got those to work, I could fix some of the problems above. Or do I have to install Ubuntu?
5) I just noticed that the sound doesn't seem to work yet either.
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Mar 22, 2011
I'm having a really strange problem, when I turn on openSUSE, the brightness is fine.owever, as soon as I log in the brightness gets obnoxiously low. I have a MacBook Pro 7.1 with openSUSE 11.4 KDE
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Aug 18, 2011
I have installed Ubuntu 11.04 for the 1st time. Before, I used Windows 7. I've got a Samsung R418 Laptop and on my laptop the brightness level is too low.. When I plug in the charger, the brightness level is good. I used the Fn up/down key to increase and decrease the level of brightness, but didn't work. I even checked the Power Management section, but didn't work. Installed an app called Ubuntu Tweak which allowed me to increase the level of brightness when on battery, but that too didn't work out.
Also tell me what to do and where to do it from, since I'm new to Ubuntu
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Jan 28, 2010
After updating to 9.10 NBR on my MSI U90 it behaves like pressing the function keys "increase brightness" and "decrease brightness" continuously, including show the appropriate pop up.
I guess it is related to power management because it mainly happens while on battery.
How can I get rid of this problem?
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Oct 14, 2010
i have inspiron n4010 lap top. i installed ubuntu 10.10, now brightness control is not working.
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May 22, 2010
I could find on the net to fix the screen brightness keys and get them working so I could increase the screen brightness. Nothing worked.For most or many people, some of the suggestions will work fine. For those of you who can't get them to work and are stuck with Ubuntu 10.04 on the NC20 with a dimmed-out screen, I have a quick workaround:
When you boot and get to the BIOS password prompt, use the function and up-down array keys to control the brightness there. The screen brightness will be carried through to Ubuntu. You might be able to do this at the GRUB prompt. The point is that the BIOS handles the screen brightness before Ubuntu, so it just works.
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Aug 5, 2010
I am a new user of Ubuntu, I use Ubuntu 10.04 Lucid Lynx on my laptop Acer Aspire 4741G and the specification are:
1. Intel(r) Core(tm) i5-430M Processor
2. Intel(r) HD Graphics
3. 2GB Memory
4. HD LED LCD
I have a problem in adjusting brightness, before this laptop, I used Ubuntu on my Acer Extensa, all shortcut buttons are working properly, include Fn button. To adjusting brightness, I only have to push Fn button + arrow left or arrow right. And now, I try in Aspire 4741G, it does not work. I also try to type command via terminal:
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Jun 12, 2011
I have F15 fresh install on Samsung Q45. The brightness function key is recognized but doesn't really increase or decrease brightness. It is set to maximum.There was a workaround in F14 for same problem.
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Aug 13, 2011
Over the past couple of years i have been converting other users (family members that I have to provide technical support to ) from windows to opensuse.Needless to say, my job is much easier now. Is there some application that I can install on the supported computers where I can remotely log in and control, make configuration changes, update, and fix dumb problems... when they come up?
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Aug 1, 2011
First: When I try to edit my brightness it doesn't work at all. I can turn the LED on/off but when I do up down it brings up the status bar and nothing changes. Asus K60IJ T4400 is my laptop.
The other 'problem' is the MP3 codec? How do I install this? I'm trying to use my Mp3 files in Rhythm box but can't find out how. =[Why does it have to be different ;(
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Jun 10, 2010
Last weekend I installed Ubuntu 10.4 (Netbook remix) on my new Acer Aspire 751h. The installation seemed to go smoothly, but I've noticed several things that don't work as well as on my old AA 110. I should say that I installed Ubuntu in a dual-boot setup with Windows XP, which the machine already had installed. Firstly, the screen brightness can't be adjusted with the function key/hotkey combination. The sound volume hotkeys work fine, and the brightness hotkeys work with XP, so it's not a hardware issue. The default brightness is pretty dim, so this is an annoying problem. Is there a way to bind the hotkeys to the 'increase/decrease brightness' functions?
Secondly, the vertical scroll bar on the desktop doesn't work, by which I mean if I click above or below the highlighted area no scrolling takes place. However, I can drag the highlighted area up or down and scrolling does take place, and scrolling via the touchpad works. All forms of scrolling work normally within applications. Is there anything I can do to fix this? It's only a mild annoyance, though. Thirdly, in the power management preferences application I don't have an 'On Battery Power' tab - just 'On Mains Power' and 'General'. There are some other peculiarities that probably follow on from this. I have a power indicator in the top panel of the desktop, but on bootup it's a 'lightning bolt' icon rather than the battery-shaped icon it should be. If I plug into mains power, it changes to a battery-shaped 'charging' icon until it's fully-charged, when it changes back to the lightning bolt. If I then unplug the mains power, I get a battery-shaped 'discharging' icon, but this doesn't survive a restart. Obviously, a battery level indicator is very useful and I'd like to get it working properly. The help file for power management preferences says something about GConf policy keys that need to be made writable in order to display some sliders and option boxes. I certainly don't have as many sliders and options as shown in the help file. I guess this might be related to the screen brightness problem.
Finally (for now - I haven't explored everything yet) the screen ratio looks wrong. Circular icons appear as ovals. It looks like the software thinks I've got a 4:3 ratio whereas really it's widescreen. I can't see where I can change this. I've looked in 'System.. Preferences. Monitors' but there's nothing I can change there. System testing shows the apparent resolution at 1024x768, whereas the hardware spec is 1366x768. I'm wondering whether to try to fix these things individually or whether a better option might be a reinstall - perhaps without the XP dual boot. What do you think? I'm willing to change settings from the terminal but I'd need to be told exactly where to go and what to do.
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Apr 28, 2011
This fixed a black screen issue and a brightness adjustment issue after installation of ubuntu. Also on 11.04 I couldn't get Unity to work until I edited grub I didn't come up with the fix but it took me forever to find a solution so I figured I would post it. If I have did something wrong just get a mod to delete or move this. I don't use forums often.
Code:
sudo gedit /etc/default/grub
Edit two lines to read as follows:
[code]....
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Jun 5, 2010
I am currently using Windows 7 but I would really like to install the new Ubuntu, what bothers me is that I tried using Ubuntu 9.04 few months ago and I had troubles changing the brightness (Toshiba L40). I have searched in the forum and it appears that there are quite some people with the same problems, of course fixes are offered but as at least some basic kernel knowledge is required I am in no position to follows the proposed steps. Since this is one of the determining factors whether to stay with Windows or go to Ubuntu I was wondering whether this problem is fixed in 10.04 or not?
P.S. I haven't tried messing with the kernel because I have only one laptop and I am afraid to lose the information on it.
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Feb 3, 2011
I have a sony vaio VGN-NW270F.Everything is working fine except the FN brightness keys, they are mapped to F5 and F6. If anyone knows the solution to this problem or could provide me with a way to map different keys to control the brightness of my monitor that would be great.
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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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Mar 22, 2010
I want to pick up an obviously unsolved problem. I have a Samsung Q210 Seven Notebook and recently installed Kubuntu. Everything works fine, as long as I put on my sunglasses when working with the notebook in the evening. Triggering the hotkeys shows an icon with a percentage counter that increases or decreases, depending on which function key I use. Although this looks really nifty, it gets boring after utilizing a few times. And, as you might already think, the brightness doesn't change here...
I found a hint telling to adjust the /etc/default/grub: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nomodeset acpi_backlight=vendor"
The only effect this has is that the nice percentage lowering/raising minigame doesn't work anymore
Also, nothing from the suggestions from the previous post work. This is really bad, since that way not only the user's eyes suffer, but also the energy consumption of the display is maximized.
how I can change brightness/backlight intensity
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Mar 9, 2010
I took the courage yesterday to install ubuntu 9.10. Internet was working absolutely fine (wireless), but brightness controls were not working (they still don't). So I went to this page https://wiki.ubuntu.co/Hotkeys/Troubleshooting, and ran following command(s) killall gnome-settings-daemon gnome-power-manager Now since then I cant get the internet working, and cant see the wifi connection on task bar. I have restarted the laptop but no avail.
PS: any help on how I can reduce the brightness of monitor. I am using SONY VIAO VGN FZ38M, with Nvidia 8400M GT. I have tried several threads and tried all sorts of things, like xbacklight, or somthing to do with sudo .VGA/LCD/brightness.etc.
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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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Aug 20, 2010
I have a fairly new Samsung 2233RZ 120hz lcd hooked up to a GeForce 8800gt...
When i click on the Brightness and Contrast controls on the monitor it gives me "Not available"...
Does the linux nvidia drivers disable my monitor functions? is my monitor improperly configured? do i need to take some steps in setting up my monitor? there are some tiny white scanlines going through the display horizontally if i look real close...minimimalist ubuntu 10.04/XFCE4 same happend on ubuntu 10.04 gnome... with or without the geforce drivers.
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Aug 20, 2010
Problem with lowering brightness and increasing it, When I press button to lower brightness it doesn't remember, but when I set it with power management it is fine.
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Nov 1, 2010
It seems that the brightness applet of Maverick has some bugs. I can adjust the brightness of my laptop using the Fn keys, but the notification bubble does not appear. (You know, the one that appears at the upper right hand corner of the screen when you get notifications.) Also tried adding the brightness applet to a panel, but does nothing when I try to fiddle with the slider. And one more thing, when I unplug my laptop from the power adapter, it doesn't scale down the brightness automatically, the same way when I plug it back in, the brightness doesn't scale up.
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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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May 25, 2011
I am using Samsung N150 and ubuntu 10.10 is installed in it. There is problem with brightness control i.e., I cannot control my brightness by up & down keys. I made settings such as:
I Add the repository to the sources list and enable it
sudo add-apt-repository ppa:voria/ppa
Perform complete system update
sudo apt-get update && sudo apt-get upgrade
it may take long time depending the internet connection
than I installed packages "samsung-backlight" and "easy-slow-down-manager"
sudo apt-get install samsung-backlight easy-slow-down-manager
Also I made changes in brightness setting in during the boot i.e set to user control instead of automatic. But after doing all these stuff still my laptop brightness not control by fn + up/down keys.
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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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Jul 19, 2011
I recently purchased an HP Pavilion dv7t 6163us and I installed ubuntu 11.04 on there. Everything works fine except the fn + f2 and fn +f3 which decreases and increases the brightness respectively. It's using the i7-2630qm sandy bridge processor and intel HD graphics 3000.
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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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