Ubuntu :: Kubuntu 10.4 Screen Brightness Slider Doesn't Have An Effect?
Oct 8, 2010
I ran Kubuntu 10.4 from the Live CD and from the start The screen was automatically set to be as dim as possible, but in the power manager the brightness is set to be as bright as possible. Moving around the slider doesn't do nothing, and when I click the battery icon in the tray, it shows another brightness slider that's set to dim as possible, when I move it around it has no effect and just goes back to where it was when I close the popup window. Right now I'm running from the livedisk on an IBM T42 thinkpad laptop.How do I fix this, is it a hardware issue, I've had problems with my graphics card in the past with compositing in X/Ubuntu.I've found some text files for the backlight, they're all set to 0 which I believe is the problem, however even though I'm running the File Manager as root with kdesudo and the permissions are set to read and write for the owner, who is root, I can't save any changes.
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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 16, 2011
I installed Ubuntu Natty on an Ideapad Z570. The screen brightness seems to be stuck. The keys that control brightness don't work and I can't find any option anywhere to change it.
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Nov 3, 2010
After some experience with ubuntu i have just installed Debian Squeeze on a dell inspiron 1564.
I have faced with some problems:
1- The screen brightness doesn't change. neither the brightness hotkey works nor the brightness applet changes the brightness
2-There is no sound
I had none of these problems with ubuntu lucid.
Here is the output of lspci command:
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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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May 7, 2011
i've just put on a fresh install of natty narwhal, and the volume slider in the top right corner doesn't work. if i move it all the way left to 0, the sound goes off, but anything non-zero seems to be full volume. i searched a bit , tried fiddling around in alsamixer , and gconf-editor -> apps->gnome_settings_daemon->volume_step but couldn't get any useful result.
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Nov 10, 2010
I can not enable Desktop Effect
In system setting->desktop effect I find Wrote:
The desktop effects are not available on this system, because of the following technical problems.
My video card is ati 3650. driver installed with jokey.
I ran this command:
OpenGL vendor string: ATI Technologies Inc.
Control Center for the ATI graphics accelerators
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May 7, 2010
I have upgraded to 10.4 and and after try to install mac look in ubuntu.My screen start flickering, I found it this due to in system => preference => appearance => effect become no effect automatically (as each and every time I select extra effect)After some time.for changing this setting i need to turn off the computer and restart then after i can do it i.e. change effect to extra effect. Its done after following installation
[URL]
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Mar 17, 2011
I added the Brightness Applet to the top panel, but when I change the brightness, nothing happens. D:I can't stand this, it's like my screen is stuck on supa-bright and it's hurting my eyes. When I load my PC up in Windows, the brightness control works just fine. But it doesn't seem to work on Ubuntu.
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Oct 30, 2010
i use a HP Pavilion dv6-3016ax everything works perfectly and i am very happy with ubuntu! If i could get the Brightness keys to work and the microphone i'd be even better. The brightness FN keys change the slider but make no physical difference of the brightness. And the microphone just doesn't work.
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Nov 23, 2010
According to the Community Documentation for a 6,2 running Maverick, the LCD brightness just "Works." I have mbp-nvidia-bl-dkms and pommed installed, but this has never worked for me.
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Jul 2, 2011
I have an Acer Travelmate 630(14.1" model) running Ubuntu 11.04 and I have experienced a frequent amount of freezing. Usually when I log in, the login sound effect doesn't play, the cursor turns into a wheel which changes back to the normal cursor, then changes into the wheel, but frozen. At this point the computer has completely frozen, nothing moving, no input of any kind responisive, and I have to hard reboot. Several times after that the problem goes away and I am able to log in and use it normally. I also experienced freezing when loading up Ubuntu Software Centre and using Firefox.
Sometimes after leaving it for a while, the problem is gone, but after an hour or two completely freezes again. Everything on the machine is stock, apart from upgraded 1GB RAM and 60GB HDD. And I use an external monitor because the internal one has a damaged cable(replacement coming soon). Are there anyways I can track down the problem? I have already uninstalled compiz and am running Ubuntu Classic mode. I am happy to downgrade to 9.04 as that is compatible with my USB WiFi adaptor without doing complex stuff, but would like to solve the problem on 11.04.
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Apr 5, 2011
I just upgraded from kde 4.4.4 to 4.6.0 in the *stable* kde repo, and now beclock effect doesn't works anymore I can't live without it how can I solve???
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Feb 10, 2010
1. The resolution change (from 1024*768 to 1680*1050)could not be saved to /etc/X11/xorg.conf2. After I manually changed the /etc/X11/xorg.conf, it could not take effect when I restart my suse. On restarting, it firstly 1680*1050, then jump back to 1024*768.How I resolved it: 1. When click "Save to X configuration", save the xorg.conf to user directory, then manually copy it to /etc/X11/xorg.conf using root privilege. (sudo cp ...) 2. change the resolution to 1680*1050 in nvdia-settings, then click "apply", after it takes effect, go to "control center" - "display", you will find the resolution here has been changed to 1680*1050, then press apply, restart suse, you get 1680*1050.Some details:(1) I have a nvdia GeForce 6150SE on board video card, and suse11.2(2) I installed nvdia driver through NVIDIA drivers - openSUSE
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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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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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Dec 21, 2010
I have used /etc/fonts/local.conf to control how the fonts looks like in my laptop, which runs a Gentoo. In particular, I don't want anti-aliasing. I copied the file to my Debian desktop, but it seems the file doesn't take effect, even after reboot. Do I need to do something else to make it take effect?
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Apr 20, 2011
I installed the Gnome Splash Screen application to change my login splash screen to the same background as my desktop.After using the program and applying my changes, and rebooting nothing happened. I still have the pink default image in the background instead of the image I chose.I did not have any luck using a search engine to solve this issue.I'm using Ubuntu 10.10 with an Nvidia graphics card.This is my first attempt at linux support of any kind and I hope I am in the right place and using an acceptable format
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Jan 22, 2010
My laptop with Ubuntu 9.10 just randomly while adjusting the brightness using the shortcut key commands on my laptop the brightness started to glitch between two brightness levels. If I don't use the shortcut keys it doesn't glitch unless I shut the screen or restart the computer. So I've had to put up with this for the past couple months now and I think that it might even drive me to reinstall but then I lose all my data.
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Dec 4, 2010
In which configuration files can I manually set the default screen brightness?
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Jan 3, 2011
Sometimes, out of the blue, my screen will suddenly change brightness. And no, not the gnome power manager dimming the screen when idle, I'm talking about it suddenly going from dimmest to brightest when I haven't even touched the screen brightness buttons in the last few minutes.
what package would I file this bug against)? This is Maverick on a thinkpad T60, and I can provide any other information that people find relevant. On what may be a related note, it seems that one push of the screen brightness up or down buttons causes two increments in brightness.
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May 11, 2011
I originally installed Maverick on my Macbook 5.1 using rEFIt to dual boot. For some reason, after installing Compiz my screen brightness functionality stopped working. It was permanently 100%. I thought that upgrading to Natty might work, but no luck. So far I've tried changing the brightness manually in terminal and in power-management, editing the grub file and also reinstalling compiz, all to no avail. Trying to alter brightness using the fn keys displays the brightness panel in the top right, and it decreases in value as it should, but the screen stays bright. The brightness settings work fine when I boot to Mac.
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Feb 1, 2011
on my fairly new ubuntu install (10.04.1 LTS) on a laptop, the screen brightness changes seemingly at random, i.e. while I do other things like surf the web. Often, the brightness will decrease some (it does not fade to black as reported by others with similar problems) and come back a few seconds later
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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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Apr 9, 2010
if there is a way of selecting a specific area of the screen and increase brightness? The thing is that I had to reduce my monitor brightness and contrast, due to recurring headaches. The new configuration is fine for most applications, but videos on web pages are too dark. I have created a script that allows me to change nvidia settings quickly, but when switching to the brighter setup my eyes hurt even if it is just for a moment. So I would like to be able to brighten a specific area of the screen.
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Aug 10, 2010
I have a netbook with LED backlight, but even the lowest brightness of the screen is still very bright and eye straining in a dark environment. On Windows and MacOSX there are simple tools that put a borderless more or less transparent black window in front of everything on the screen to reduce brightness even further.Are there such tools for Ubuntu or other means of achieving the same result?
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Nov 18, 2010
I bought a Asus eeepc a few days ago which I really like, with the exception of one thing - windows 7 starter. I like Windows 7, but starter is just bad. I also really like ubuntu, so I've decided to put it on my netbook. I download the netbook edition from the site, put it on a usb drive, and than tested it out - well, my screen is dim, very dim. Changing the brightness setting on the tool bar up top doesn't change anything, and using the function keys does change it, but still keeps it very dim.
I've tried restarting my computer, same thing, I've tried messing around with settings in the battery options, nothing... I really don't want to install it if its going to be this dark, I can see things, but its not very pleasant to use. I'm starting to consider that its the problem with the file I downloaded. Theres nothing wrong with my netbook, everything worked perfectly fine in Windows 7. I use the full version of ubuntu 10.04 on my other laptop which works perfectly fine, I'm not sure why this version is acting so weird on my netbook.
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Aug 14, 2010
I've been running Ubuntu 10.04 since it came out using two monitors, on the extended desktop option (the way I want it to be) with no problems. Today I unplugged the HDMI cable from my laptop and used it for my ps3 and now when I put the HDMI back in it will only run in the mirror desktop option. This is not acceptable to me as my 2nd monitor is a 50inch tv with a much higher resolution than my laptop.
When I uncheck the "Same image in all monitors" box it says to log out and back in. Doing this changes nothing(neither has restarting), it is still a mirrored screen.
When I click the detect monitors button absolutely nothing happens. Before today the detect monitors button did work.
How can I go about fixing this?
Edit: Also I just watched a show on the laptop and theres a lot of screen tearing, this didn't happen before.
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Aug 30, 2010
I've been using Ubuntu for a while on my laptop so I thought I'd also run it on my arcade machine. The monitor can handle a resolution up to at least 704x513 60hz (the resolution the original arcade game used) and uses composite sync. I've spent some time using xrandr to get the resolution, refresh rate and sync polarities that I need.
These are the commands I used to set my resolution.code...
But it has the same effect since I have the hsync and vsync wired into a composite sync anyway.
What I get is this weird split screen effect that's in the picture. It looks like I'm missing something I just cant figure it out!
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Sep 18, 2009
I'm having trouble locating a way to adjust the screen brightness on fc10... It is only possible to use the monitor's control for now.Yeah my monitor make an annoying whining noise unless you turn it on 100% brightness, but that hurts my eyes.It is so crazy that they didn't put a brightness control in! ( or rather they destroyed working ones of year past, Why? )
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