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I'am using Ubuntu 13.04 on Lenovo G500 -E

when i turn my laptop computer on the brightness of screen is 0 and i need to increase the brightness to see the screen

is this problem related to Ubuntu 13.04?

please help me to solve this problem

thanks in advance,

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marked as duplicate by Radu Rădeanu, mikewhatever, psusi, Lucio, karel Jan 2 '14 at 22:52

This question was marked as an exact duplicate of an existing question.

Not 13.04-specific; I installed 13.04 on three different Lenovos including a T500 without this problem. – K7AAY Jan 2 '14 at 19:03
up vote 0 down vote accepted

You can try to login and set the brightness via the brightness control.

Or you can try if it works with this terminal command

echo 1666 >> /sys/class/backlight/intel_backlight/brightness

if this works you can add this command to the /etc/rc.local file which will run this command at startup process.

ps. you can change 1666 to whatever you want (more or less brightness)

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your answer is true but we need to add sleep 5 (or more, or less) a line above the echo ...-line ,because /etc/rc.local is executed before the screen is fully initialized – Mostafa Jamareh Jan 4 '14 at 15:51

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