General :: Stop From Re-setting The Display Brightness?
Mar 16, 2010
After manually setting the display brightness on my laptop, the system re-sets the value. If the laptop is plugged in, the value is set to full brightness; if it is not plugged in, it is set to dimmer. How do I stop that behavior?
Note that I am not talking about what it does in response to the event of plugging in or unplugging my system. It changes on it's own - usually several minutes after I change the brightness value. I have observed this behavior on different systems, different distributions, and different desktop environments.
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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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Sep 24, 2010
Installed 10.04 on a Dell Latitude D610. Found that the screen would start dimming after a few seconds of the computer being idle. Went into the Power Management Preferences to make sure that "Dim display when idle" was unchecked, and it is, both for "On AC Power" and "On Battery Power". Can't seem to figure out how to stop my brightness from dimming. Any help would be greatly appreciated, and any further information you need I will gladly provide.
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Jul 12, 2011
I have Fedora 15 gnome 3 installed on my new laptop. When my system runs on battery my power management keeps changing my screen brightness. It keeps dimming my backlight. In the GUI of Power Management I cant find any option to change this setting. How can I do that through Command Line
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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 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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Apr 25, 2009
Totem didn't play .avi movies by default after my new CentOS 5.3 install. In my effort to find a way to fix it I learned in another forum that installing VLC allows almost all video formats to be played. So I added RPMForge to my repository group then I found and installed VLC with no problem.
Now that VLC is installed and I've had a chance to use it, I've learned that it fails to save my brightness setting between launches. This is very frustrating because the default brightness is always too dark, which means I have to go to the controls and reset it every time I launch the software. Does anyone here know how I can save my brightness setting between launches?
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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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Mar 25, 2010
I am running Karmic (9.10) on my macbook air (2,1) and although many things work fine (I wrote about it here:[URL]) one of the last things that doesn't work is setting the screen brightness. The FN-F11/F12 combo does bring up the brightness adjustment notification window (top right) and I can change the setting, but it has no effect UNTILL I reboot or suspend to RAM and reboot.
A related issue is that the brightness doesn't automatically adjust to the surrounding brightness.
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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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Jul 15, 2015
Today I installed debian-8.1.0-amd64 on my older Samsung Laptop (Model r560). The installation without a desktop environment worked fine and the system booted without any problems into the virtual console. There was however one problem: when I was away from keyboard for some time, the screen turned black and when I came back and hit a button to wake the system up, the laptop immediately restarted. Later I installed the gnome desktop environment. This also worked fine.
But whenever I try to change the screen brightness in the gnome-shell, my system immediately restarts and successive attempts to boot debian fail. Some time later and after countless attempts to boot debian, it finally does boot again. By "debian fails to boot" i mean the following: The initial ram disk is loaded and fschk runs. Usually the system suddenly reboots at this point. SOmetimes, however, the video mode changes, the console font is changed and some services are getting started, but then at some point the system also restarts. I don't reach the point where a login prompt appears, or the graphical environment starts up.
Assuming, it has something to do with buggy acpi implementation of my hardware, I tried the following:
I tried to disable acpi completely by using the kernel parameter "acpi=off". This doesn't work and causes the kernel to hang
I tried to start debian without using a GUI using the single parameter. This also didn't work.
acpi_backlight=vendor also did not fix the problem.
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Jan 11, 2010
i was using GDE in my ubuntu system. But yesterday i did some thing so my ubuntu system has changed as debian. My login screen changed and i cant access "system->administration->Login window"when i do this i am getting this error message"GDM (GNOME Display Manager) is not running.You might be using a different display manager, such as KDM (KDE Display Manager), CDE login (dtlogin), or xdm. If you wish to use this feature, then your system will need to be configured to use GDM instead." How to come back to my normal original ubuntu with GNOME.
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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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Apr 15, 2010
Normally I use disper to enable my external monitor, but I don't think I can force the 2nd monitor to be primary. [URL]
I've played around with nv-control-dpy included in the nvidia-control source, but I haven't figured out how to do it yet. How to get: [URL]
This is a laptop, to which I connect an external hdmi display when I get to work. dipser -e extends the desktop for me, but the laptop remains the primary desktop (holding the panels etc). nvidia-settings can set primary monitor for me, but I want to use the cli.
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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 11, 2010
I just recently changed one of my OSs to Ubuntu 10.04. I have run into a somewhat annoying problem. The problem: My monitor is going to sleep after 10 min. of inactivity no matter how I have the system set. I do not wish for this to occur, I mean why bother having a screensaver? lol I am using a desktop PC. The Power Management daemon is enabled. I have power management set to - Put computer to sleep when inactive for: Never Put display to sleep when inactive for: Never When power button is pressed: Shutdown When suspend button is pressed: Suspend
I have screensaver set to- Activate screensaver when computer is idle: unchecked Lock screen when screensaver is active: unchecked The duration slider is maxed out to 2 hours. The sleep function of my monitor is turned off. It's a Compaq WF 1907. I know it's Ubuntu because my monitor OSD is showing a "No Signal" message when it happens and it never happens when I am using Linux Mint 9. Since LM9 is built on top of Ubuntu, this leads me to believe a setting is simply not taking. Ubuntu is fully updated. I have a wonderful desktop set up and I would really hate to scrap it and go back to LM on this partition but this is really irritating. Is there some way to make it work the way it's supposed to?
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May 27, 2010
How do I stop the message asking me to select a vga setting on every boot or press enter or space to see the various settings available? running slackware 13.1 on an aspire one netbook
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May 31, 2011
im looking at changing the computer systems over to Ubuntu, at a scout campsite im staff at. i have sorted some filtering out with dansguardian.
but how do i limit the powers of users, so remove all the administrative side and most importantly stop a user changing the network proxy setting.
i have used ubuntu before but not for a while, so im a bit of a newbie atm.
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Nov 9, 2010
I noticed that after certain installations in Xubuntu/Ubuntu and many other distro, some of the times the distro will load the correct video module and resolution for the most part but in others we are stuck in messing with the xorg.conf file. I have observer that in the newer distros they dont use xorg.conf anymore and have steered toward xrandr. My question is:
1 - If after an initial install you have no video and you know what hardware you have, how would you use xrandr to configure the machine to boot with the correct resolution and setting? 2 - I also read that you can still use the xorg.conf, would this still be the standard method of setup?
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Nov 9, 2010
I noticed that after certain installations in Xubuntu/Ubuntu and many other distro, some of the times the distro will load the correct video module and resolution for the most part but in others we are stuck in messing with the xorg.conf file. I have observed that in the newer distros they dont use xorg.conf anymore and have steered toward xrandr.
My question is:
1 - If after an initial install you have no video and you know what hardware you have, how would you use xrandr to configure the machine to boot with the correct resolution and setting?
2 - I also read that you can still use the xorg.conf, would this still be the standard method of setup?
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Jul 7, 2010
When I click once with my bluetooth mouse (Logitech M550b), about one time in three ubuntu receives two clicks.I'm not sure if this is a problem with the mouse or a bug in the OS, but even if it is a problem with the mouse these two clicks arrive at the same time, way too quickly to be a genuine double click.I have searched everywhere (including all the options in gconf-editor) and cannot find where the debounce delay is set for mice. Debounce should ensure that two clicks occurring in rapid succession are interpreted as a single click and thereby solve my problem.
The mouse settings window and gconf-editor both have a setting for 'maximum double click delay', but nothing for 'minimum double click delay' (AKA debounce delay). Does anyone know how I can change the setting so that two simultaneous clicks from the same mouse will be interpreted as a single click?Alternatively, does anyone know of an ubuntu bug which might be causing a single click to be interpreted as two simultaneous clicks? I suspect that the mouse is not the source of problem but have not had a chance to test it on another machine to confirm.I've searched the forum history and found lots of other people having the same problem of phantom double clicks, but nobody has found a solution in any of the previous threads.
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May 16, 2010
Not sure if I'm doing right to post this on this thread but I've got an issue with my laptop screen extension. I have plugged a vga monitor to my laptop for a right display extension. The idea is to put the right extension on the vga monitor but don't why the monitor is know my main screen and my laptop the extension. I have tried to change sides but the laptop is still the extension and not the main one as I want.
Is there a hard way to make this work?
Notes:
Video: ATI HD2300 with fglrx drivers.
KDE 4.4.3
Trying with ati catalyst panel and preferences-screen options
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Nov 26, 2010
Installed 11.3 KDE today on an old Vaio desktop we were given (Duron 900Mhz, 512mb, 40Gb HD, SiS630 onboard video, Trinitron 15" monitor). Everything works fine except it will not save the 800x600 resolution setting. Every time I reboot it is back to 1280x1024 which it thinks is the default resolution. Any tweak to get 11.3 to save that setting?
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Jun 9, 2010
I am connected to work via a VPN. I am logging into a Solaris box at work from OpenSuse 11, using ssh -X. I would like to start a GUI on the solaris box. The problem is that I don't know what value to give the DISPLAY variable. Is it the local internal LAN ip address, for my machine? I did try that, and I tested it using, xterm on the solaris machine. It says it can't open the display. I have enabled remote connections on my machine using xhost +.I have to run a performance test on the Solaris box at 7am in the morning... so need to find out how to start the GUI
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Feb 1, 2011
At home, I am running Ubuntu 10.04.1 LTS with openssh server OpenSSH_5.3p1 Debian-3ubuntu5 In my office, we are using CentOS 5.5 with openssh OpenSSH_4.3p2, OpenSSL 0.9.8e-fips-rhel5 Both my /etc/ssh/sshd_config at home and my ~/.ssh/config has X forwarding enabled.When I log in to my home machine from my office with ssh -X -vv host, I got the following:
Code:
debug2: x11_get_proto: /usr/bin/xauth list :0.0 2>/dev/null
debug1: Requesting X11 forwarding with authentication spoofing.
debug2: channel 0: request x11-req confirm 0
But once I log in, I get:
Code:
home:~>echo $DISPLAY
DISPLAY: Undefined variable.
I tried setting DISPLAY to localhostx.0 (xx from 0 to 10) but none of that works. I have also tried ssh -Y but the result is the same.
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Jan 12, 2010
i was using GDE in my ubuntu system. But yesterday i did some thing so my ubuntu system has changed as debian. My login screen changed and i cant access "system->administration->Login window"when i do this i am getting this error message"GDM (GNOME Display Manager) is not running.You might be using a different display manager, such as KDM (KDE Display Manager), CDE login (dtlogin), or xdm. If you wish to use this feature, then your system will need to be configured to use GDM instead."How to come back to my normal original ubuntu with GNOME.
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Feb 13, 2009
New install PCLinuxOS, and the max resolution setting is 1024 x 768 (too low).
What do I need to change to reset the options? xorg.conf file??? Where's that?
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Jan 5, 2010
I am new to Ubuntu (Karmic with GNOME). I have a Samsung LED UEB7020, with an Asrock ION 330 BD player feeding to a Onkyo TXSR607, AV rec. The other day I downloaded NVidia v180.25, which was very useful, because it immediately solved an earlier teething problem of no sound. However immediately upon re-booting and ever since, the screen size is too big for the TV, meaning that I can not see the top, bottom, side and left of the display by about 2 inches either way. I have checked the NVidia resolution settings and they are correct for the TV, ie 1920 by 1080.
My etc/X11/ xorg.conf file reads as follows:
Section "Screen"
Identifier "Default Screen"
DefaultDepth 24
EndSection
Section "Module"
Load "glx"
EndSection
Section "Device"
Identifier "Default Device"
Driver "nvidia"
Option "NoLogo" "True"
EndSection
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Mar 17, 2010
I have extended desktop working on my netbook (finally, by turning off compiz), but now Gnome prefers my netbook's main screen as the main display (with the panel and such) instead of my external monitor.How can I switch this? I don't see any setting for it in the Display dialog.
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