Screen blackened

[William Brown]

On 05/09/2013, at 9:32, Sam Varshavchik <mrsam at courier-mta.com> wrote:

> richard.vickeryrv at gmail.com 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. 

William