https://bugzilla.kernel.org/show_bug.cgi?id=19592


Zhang Rui <rui.zh...@intel.com> changed:

           What    |Removed                     |Added
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             Status|ASSIGNED                    |NEEDINFO
         AssignedTo|acpi_power-video@kernel-bug |rui.zh...@intel.com
                   |s.osdl.org                  |




--- Comment #18 from Zhang Rui <rui.zh...@intel.com>  2012-11-13 07:24:33 ---
so, we are clear what the problem is.
for one hotkey press,
1) kernel changes the backlight
2) kernel send notification to userspace
2) userspace changes the backlight based on the kernel notification

And kernel has a module parameter to disable step 1) and do step2) only, and
this parameter is designed to be used by X to disable step 1) when X starts.
but this is not the proper solution that X guys want?

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