Cannot change screen brightness

Posted by sixpounder0302 on Ask Ubuntu See other posts from Ask Ubuntu or by sixpounder0302
Published on 2012-12-10T05:00:14Z Indexed on 2012/12/10 23:18 UTC
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brightness

I can't change the screen brightness on my laptop (Asus G53JW) with 12.10 installed. I have tried many ways to solve the problem, but nothing worked. I tried to edit grub with acpi_vendor and acpi_osi (I have tried all the combinations found on the ubuntu.org forum but still I can't change it. I even tried to add in xorg.conf the string:

Option “RegistryDwords” “EnableBrightnessControl=1?

Nothing changed. The only way to get it to work is to use nvidiabl but I have flickering problems with it and I'd like to find a way to solve the problem without external modules like nvidiabl.

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