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].....
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.
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.
View 5 Replies View RelatedHow do I adjust the brightness in Gnome?
View 9 Replies View RelatedI 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.
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?
View 3 Replies View RelatedUbuntu 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?
View 5 Replies View RelatedI 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?
View 4 Replies View RelatedWhen 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
dont say xgamma, i need brightness/contrast not gamma
View 2 Replies View RelatedI 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.
View 2 Replies View RelatedI'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?
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
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]...
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.
View 3 Replies View RelatedCan anyone recommend an application that will automatically dim my monitors when it gets dark at night?
View 2 Replies View RelatedI 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?
View 9 Replies View RelatedCan't adjust brightness of display on buttery power mode Have no controller, such as in the tab "On AC Power"
View 4 Replies View RelatedSometimes 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.
View 2 Replies View RelatedI 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.
View 9 Replies View Relatedwhy both ubuntu and centos 5.4 will only give me 800x600 resolution on my monitor when opensolaris immediately gives me 1280x1024?The first time I tried ubuntu it gave me 1280x1024 and now will only make 800x600...This is a viewsonic VG930M Monitor..
View 4 Replies View RelatedI have a problem with my graphics (exactly this one: [URL] I've got an Intel 845G chipset and a LG Flatron F900P monitor.A friend of mine convinced me to try ubuntu and I installed the 10.10 version. Everything (except the monitor's resolution) works all right.
My computer is: IBM Net Vista 8305-21G
Chipset: FRU PN 49P1599 (Intel 845G)
i got an AOC 18" lcd, the instructions that came with it, are only for Windows and Macs, if i press a button at the base of it, a square appears with all the pictures to configure including brightness, but i can't click on the screen. The cd that came with the monitor, i assume only works with Windows/Mac, i haven't inserted it for fear of screwing up.
PS: when i pass the mouse over the square, the pointer disappears.
Ubuntu 10.04.1
Nvidia gpu ( Asus GeForce GTS 450 Series graphic card)
DVI connection to monitor (Dell 2405)
Using a VGA connection I can use the buttons on the monitor to control both contrast and brightness. Using dvi there is no control(no contrast control and the brightness button changes the numbers but not the actual brightness!) I cannot find the app that controls the Nvidia GPU
(it should exist as I found it on Zenwalk).
I have a very old monitor that shows too dark colours I would like to increase the brightness via software, in another distro I used gxvattr but in ubuntu doesn't work, I also tried gdcccontrol but my monitor isn't supported. What should I try ?
View 3 Replies View RelatedI 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.
I'm a fairly nocturnal creature by nature, but life requires me to spend more time during the bright hours of day. I also have a visual impairment which makes it that my eyes take a very long time to adjust to darker situations. I need to be able to easily dim my screen so that using my computer doesn't keep me awake as much and doesn't prevent me from doing other stuff.
I will accept both a hotkey based solution "like on most laptop" as a timed one. My main monitor lacks simple brightness/contrast controls. f.lux doesn't suit my needs, since it only changes the screen's color temperature. I'd like the solution to work regardless of the make and model of the video card involved. Wearing sunglasses is impractical, since they make it hard to interact with objects around my computer.
I bought a new computer, pretty awesome machine, AMD FX6300 with a Radeon 260X graphics. Along I bought a new Led monitor AOC with DDC/CI capability.
It is my understanding that with the DDC/CI, monitors can have their brightness controlled just like laptop screens do, but better software controlled.
This is something I have done before with nvidia graphics, the open drive had the control and the proprietary only needed a small config setting. This was done however in a dekstop iMac, the screen also LED and HDMI.
So I just freshly installed debian jessie in this setup, it seems the open source driver does a pretty good job, but still missing the brightness control and audio through HDMI doesn't work either.
In xfce ,My keyboard for adjust volume don't work.I found in xfce--config--keyboard, there are settings to set globe hotkey.I try to add XF86AudioLowerVolume ,XF86AudioRaiseVolume and XF86AudioMute in this area,,but don't know which command should be.
View 7 Replies View RelatedI've just switched to slackware from opensuse (and before ubuntu) for few days. Everything is ok , no, is awesome when I was doing my job on run level 3. However, I found there was no sound when I booted it to run level 4 (xfce) trying to play some music on yesterday. After googled a lot, I thought there must be some wrong with my alsa driver, because I couldn't adjust the PCM volume from either alsamixer or amixer. In fact, there is even no PCM section in it, but two sections named "IEC958" and "IEC958 D" instead with no "pvolume" capability. Here is some outputs:
Code:
bash-3.1# cat /proc/asound/cards
0 [Intel ]: HDA-Intel - HDA Intel
HDA Intel at 0xefffc000 irq 21
[Code].....
ps: I've reinstalled alsa-lib, alsa-oss, alsa-utils from the installation dvd, no use