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Set laptop display brightness

Terminal - Set laptop display brightness
echo <percentage> | sudo dd of=/proc/acpi/video/VGA/LCD/brightness
2011-01-05 03:57:58
User: alperyilmaz
Functions: dd echo sudo
Set laptop display brightness

An alternative which does not require to be root


There are 3 alternatives - vote for the best!

Terminal - Alternatives
echo <percentage> > /proc/acpi/video/VGA/LCD/brightness
2010-12-29 13:51:45
User: renan2112
Functions: echo

Run as root. Path may vary depending on laptop model and video card (this was tested on an Acer laptop with ATI HD3200 video).

cat /proc/acpi/video/VGA/LCD/brightness

to discover the possible values for your display.

Know a better way?

If you can do better, submit your command here.

What others think

echo <percentage> | sudo tee /proc/acpi/video/VGA/LCD/brightness
Comment by kaedenn 281 weeks and 6 days ago

I agree with Kaedenn. "dd" works, but "tee" is the standard way to do this.

Comment by hackerb9 281 weeks and 6 days ago

Your point of view

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