Turn on Laptop backlight without a keyboard shortcut

Posted by user24963 on Super User See other posts from Super User or by user24963
Published on 2014-06-06T02:12:32Z Indexed on 2014/06/06 3:29 UTC
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I recently installed the latest drivers and my screen backlight turned off. The problem is that my Fn-F7 key combination doesn't work, so I can't turn it back on.

I can see my screen at night if I hold a source of light next to the screen. So I can still do some trivial things with my laptop.

Is there a way to turn the backlight on without using Fn-F7 key combination, either via the command line, or some other way?

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