https://bugzilla.kernel.org/show_bug.cgi?id=205589
--- Comment #4 from pkk@spth.de --- Today, I've also installed a 5.1.21 kernel from Ubuntu on my Debian GNU/Linux testing system, and logged into XFCE thrice. I did not see the green screen crash with that kernel, though one I got a crash (system frozen, only mouse pointer still moveable) a few minutes after logging in.