Comment # 5 on bug 1004052 from Takashi Iwai

The problems are two folds at least:
- 4.4.x kernel lacks of the WMI keytable for new laptops.
  The upstream added it via commit
    a464afb9581f6a9eabce8a4aa0c70cb71e6bf4d9
    dell-wmi: Support new hotkeys on the XPS 13 9350 (Skylake)

  There are other useful commits to dell-wmi, so we should backport them to our
kernels.

- Even if an unknown key is received, it shouldn't result in the workqueue
warning.
  It must be something wrong either in workqueue or in dell-wmi.


And yet, there is still the issue: non-working rfkill.

David, could you install openSUSE-42.1 kernel onto 42.2 system, boot it, and
check whether rfkill really works as is?  I guess rather it's in other piece.