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X450LCP lost abillity to turn the screen off


Since 5.0.0-rc4 I vefiried that my ASUS laptop cannot turn the screen of
anymore. There were several commits in 5.0 merge window touching this
functionality like:

  71b12beaf12f platform/x86: asus-nb-wmi: Drop mapping of 0x33 and 0x34 scan codes
  b3f2f3799a97 platform/x86: asus-nb-wmi: Map 0x35 to KEY_SCREENLOCK
  78f3ac76d9e5 platform/x86: asus-wmi: Tell the EC the OS will handle the display off hotkey

I didn't have time to track it down, and my previous working kernel was 4.12
(default in openSUSE Leap 15), but I hope I will be able to test older kernels this week.