Screen blackened

William Brown william at
Thu Sep 5 00:09:40 UTC 2013

On 05/09/2013, at 9:32, Sam Varshavchik <mrsam at> wrote:

> 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?
> Laptop?
> 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.

Linux doesn't work with ambient light sensors.

What model graphics card and laptop do you have? This same issue affects my ati gpu on my laptop. Its likely a kernel regression. 


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