I have an Asus UX433 (8265U, integrated graphics) and it sometimes fails to boot. kernel v5.0.9 boots just fine, 5.0.17 (intermittently ~4/10), 5.1.7(intermittently ~1/3), 5.1.8 (0/1). The same has been confirmed on a similar device(Asus UX461) on fedoraforums. I don’t think it’s a graphics issue. The system is completely unresponsive, no command line, nothing. ctrl+alt+del, esc etc don’t work. There are no boot logs in the journal.
I’ll be happy to provide any additional information.