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

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

--- Comment #14 from Hans de Goede (jwrdegoede@xxxxxxxxxxxxxxxxx) ---
Created attachment 299405
  --> https://bugzilla.kernel.org/attachment.cgi?id=299405&action=edit
acpi-video event debug patch

Please give this a test spin and see if any events are printed to dmesg when
pressing the brightness keys.

p.s.

We should really also hookup that WMI 0xd0 event to e.g. KEY_OPEN. Johannes,
that would potentially make a good first kernel patch for you (assuming you
haven't written kernel patches before).

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