https://bugzilla.kernel.org/show_bug.cgi?id=13773
Zhang Rui <rui.zh...@intel.com> changed:
What |Removed |Added
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CC| |jbar...@virtuousgeek.org
--- Comment #33 from Zhang Rui <rui.zh...@intel.com> 2010-09-28 02:01:20 ---
(In reply to comment #31)
>
> On the other hand, if somebody would explain a bit more, what can happen, than
> I could help more. I can compile kernel myself and I can devote a bit of time
> to hack it, but I am total unaware about this problem. What can be the root?
> How the backlit can not switch on back?
usually, the graphics driver saves and restores the LCD status.
and this may happen if the graphics driver doesn't restore the status
correctly.
> What kind of software means do we have
> to try to switch on if it is off?
as you're using intel graphics, cc jesse, who is an expert on this.
> E.g restarting the X server or switching
> between console and graphical mode does not solve the problem for me. The
> laptop must be restarted to get the backlit on.
>
> Please share if you have any ideas how to start to reproduce/fix this.
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