Brightness not working in dual boot

I have Lenovo IdeaPad S300 and I am facing a problem as brightness not changing and I know I can acpi settings but I have dual-boot. I am using dr460nized edition and 4gb hdd.

Wait.. Are you serious?

:dizzy_face:

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Read this topic on how to troubleshoot and apply a workaround.

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Working fine now thanks for your support .

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