Screen blackened

Sam Varshavchik mrsam at
Thu Sep 5 00:02:59 UTC 2013

richard.vickeryrv at writes:

> Ha‎s anyone had the problem where the screen dims very close to black the  
> moment Fedora start or finishes booting after the bios has booted up?


Your laptop probably has an ambient light sensor, and the screen brightness  
gets autoadjusted based on its reading; either that, or Fedora is restoring  
the saved display brightness setting.

Your keyboard must have an ACPI keystroke combination that adjusts screen  
brightness, and/or ambient light sensor on/off.

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