[Bug 214899] ideapad-laptop: platform backlight device not working

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https://bugzilla.kernel.org/show_bug.cgi?id=214899

Andy Shevchenko (andy.shevchenko@xxxxxxxxx) changed:

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                 CC|                            |andy.shevchenko@xxxxxxxxx

--- Comment #12 from Andy Shevchenko (andy.shevchenko@xxxxxxxxx) ---
(In reply to Johannes P from comment #11)
> Still nothing but grave silence from the brightness keys though.

Which might be a sign that the key presses are handled by some microcontroller
(EC?) with a custom firmware and being delivered to the OS in different way.
It's also possible that the WMI can be used but these events have to be enabled
somehow (obviously with ACPI methods or so).

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