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Is it possible to set the default display brightness so you don't have to re-adjust it everytime you reboot? My laptop display is killing my eyes at the login screen already because it starts at 100% brightness every time.

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possible duplicate of How to make GNOME remember brightness setting – Jorge Castro Oct 15 '11 at 11:32
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3 Answers

up vote 1 down vote

This should do the trick:

System settings -> Screen -> Brightness

Use the slider to adjust default setting.

enter image description here

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up vote 0 down vote

It isn't default. Whenever I reboot my brightness is set to 100%. Luckily I saw

$ echo 5 > /sys/class/backlight/acpi_video0/brightness

and before that, 

$ chmod o+w /sys/class/backlight/acpi_video0/brightness
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up vote 0 down vote

this works in my 12.04 How set brightness on startup – Ubuntu 12.04

every time i boot up, it is set already. hope it will help you.

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protected by Community♦ Feb 13 at 12:24

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