https://bugs.freedesktop.org/show_bug.cgi?id=109206
--- Comment #36 from Talha Khan evo8800@gmail.com --- (In reply to JerryD from comment #35)
Well, I just ran Fedora updates which brought kernel to 5.0.7-200.fc29 and there was also an update to mesa-dri-drivers.x86_64 18.3.6-1.fc29. My laptop failed to boot with or without the raven_dmcu.bin file after this update.
I then also noted that the 5.06 kernel will boot with or without the raven_dmcu.bin file. I am leaving that firmware file in place and using 5.06 kernel at the moment.
I suspect we have a "whack-a-mole" bug, also affectionately known as a Heisenbug. Or at least more than one problem overlapping another. Hard to say whether the problem is in the kernel or somewhere else. For sure, I can not boot the 5.07.
I also updated my system to kernel 5.0.7-200.fc29 and mesa-dri-drivers.x86_64 version 18.3.6-1.fc29, and here are the results for me: original initramfs image with raven_dmcu.bin file: Unable to boot, same issue as before. updated initramfs image without raven_dmcu.bin file: able to boot fine.
It's unfortunate that the issue is so hard to reproduce.