https://bugs.freedesktop.org/show_bug.cgi?id=108693
--- Comment #1 from Ronny Standtke ronny.standtke@gmx.net --- I can confirm the bug. We provide an exam environment based on Debian Live. Since we switched to Kernel 4.18 (provided in Debian backports) we have seen *many* Macs failing to boot and just showing a black screen. So at least for us this regression is quite severe...