https://bugs.freedesktop.org/show_bug.cgi?id=106225
--- Comment #35 from Andrea Vettorello andrea.vettorello@gmail.com --- Sorry for the spam, I thought the two attachments would be inserted in the same comment.
I think I'm afflicted by the same bug on different HW (Asrock AB350 ixt, Ryzen 5 2400G), Debian Stretch running vanilla kernel 4.17.5. I would say my boot rate is 1 in 4~5 attempts.
Feel free to require other info.