I'm own xps 9550. After bios update to 1.13.1 i have weird keyboard issues. Some key combinations (shift+`, Ctrl+z, Ctrl+v) stops working accidentially for some period of time. Shift, Ctrl, z, v and ` itself works fine, but pressed modifier (Shift, Ctrl) makes pressing letter keys (z, v, `) invisible.
I have dual boot (linux, windows). The issue concerns both.
I've made a reserch and figured out, that the problem is with my Tilda and Control_L buttons.
When the button is pressed instead of one event "Key press" it generates a lot of "Key press", "Key release" pairs.
Who can be responsible for such behavior - keyboard controller, bios, processor?