[Bug 568611] Re: Screen brightness control fails on Dell Studio 1558

[Tito Torrisi]

@Kamal: I definitely need both commands. When I use both, everything
works. When I use only the first one, the following things happen: a)
the fan goes crazy (this also happened with your old kernel after
awaking from suspend, so a restart is needed to turn it off) b) the
screen is very dark (in contrary to 100% as before) and the controls
don't work, neither the fn keys nor the power managment brightness
slider. c) however, only one backlight control (your new one) appears

Hope you can read something from that, especially why the fan goes high,
I will try suspend tomorrow, but I guess this is some other matter...

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Screen brightness control fails on Dell Studio 1558
https://bugs.launchpad.net/bugs/568611
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