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Hello guys:
For the time I've been using ArchLinux my screen brightness buttons don't work. Also power options for adjusting screen brightness do nothing, so you see why I have a problem, my screen eats the laptop's battery... I've also tried adjusting the values of /proc/acpi/video/GFX0/DD02/brightness, but saw no effect. I'm using an Acer Aspire 5740-5513, which has an intel core i3 using Intel Graphics Media Accelerator HD
The problem with the world is stupidity. I'm not saying there should be a capital punishment for stupidity, but why don't we just take the safety labels off of everything and let the problem solve itself?
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Did you try with gnome-power-manager? ( Or a name like that ). You said "power options", maybe it is the same.
My Fn button does not work properly and I am using gnome-power-manager to set the brightness low.
I hope that it help.
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Hello. For the time being I cannot set my brightness automatically neither (I have a Toshiba T130-10G notebook). However, I execute this command in terminal to set the brightness:
setpci -s 00:02.0 F4.B=30
You can of course change that "30" value to your needs. Although being no automatic solution, I guess it will help.
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I faced the same issue as you Mikus01. I tried the above solution and it worked. Thanks archer!
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You can also use the following command to set the LCD backlight brightness:
xbacklight -set 50
or if you want to map a key to increase/decrease the brightness:
xbacklight -inc 10
xbacklight -dec 10
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Hey guys, the following script I wrote might be useful for increasing/decreasing and/or setting brightness to min/max using 'xbacklight' so you can bind it to some of your key combination. For example i have FN+f2 set to '/path/to/script down' to decrease '/path/to/script up' to increase etc ...
Respect
#!/bin/bash
#
if [ $# -ne 1 ]
then
exit 1
elif [ $1 == "down" ]
then
xbacklight - 10
elif [ $1 == "up" ]
then
xbacklight + 10
elif [ $1 == "max" ]
then
xbacklight = 100
elif [ $1 == "min" ]
then
xbacklight = 10
fi
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i faced the same issue with my old lenovo. the setpci command worked there too. i had written a simple script to keep track of the backlight value and change accordingly, usually through keybindings or just by command. it's written in zsh but i guess it can be changed to bash if you redo the expansions. https://github.com/milomouse/code/blob/ … /moodlight
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