Comment 8 for bug 1762385

I can observe the same issue on several Dell systems with Linux kernel v4.4. I didn't test older kernel though.

It should be handled by the kernel instead of udevd's hwdb.

Does !wlan in hwdb necessary to make the wireless hotkey to work?
Anyway this is not the correct solution, the "!" is to send a release key for buggy keyboard, but 0xe008 we see here is just a "notification" instead of a real key press.