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I have an IdeaPad G560 and it has a bunch of LEDs on the keyboard. I would like to use some of these. Where should I look for files controlling these? There's no led directory in /proc/acpi (where it was on my previous laptop, in the asus directory) or in /sys/class.

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Check out a program called ledd. Lets you program blinking sequences and change them on the fly.

At least on my Poweredge 2500 server, the leds are controlled through the console driver.

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May I suggest you start here:

http://www.helpowl.com/manuals/Lenovo/G560/66125

Or the direct link here (no signup needed)

See page 13.

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Link only answers are discouraged here, please expand your answer. Welcome to Super User! – studiohack♦ May 13 '11 at 18:38
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Thanks for the welcome, updated answer – Peter Manton May 13 '11 at 18:45
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