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skynetbinary/brightness.md

Created May 16, 2015 10:42
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Set default display brightness in Ubuntu
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brightness.md

Setting Up Default Brightness in Ubuntu

Your default brightness is stored in

/sys/class/backlight/acpi_video0/brightness

but unfortunately, you have to set permissions to access it

$ chmod o+w /sys/class/backlight/acpi_video0/brightness

and now you can change the brightness level

$ echo 75 > /sys/class/backlight/acpi_video0/brightness

NOTE: I use 75% as my default brightness. But you can change the numbers. Cheers!

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