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bbfa235
(Get the code!)
using "acpi_backlight
however, some people found solution from this thread: https:/
in my case, its true that I can get my backlight work again by using setpci command and add it to my rc.local file. But when i change my screen resolution or running apps that needs to change screen resolution, my screen blank again :(
thats why i recommend to set a keyboard shortcut to run an executable file containing setpci command, so whenever we change resolution and blank screen again, all we need to do is only press that keyboard shortcut. at least it helped me a little.