I have an ATI Radon 5450 and recently I have gotten an annoying problem. Sometimes when I boot I get a black screen on both monitors. I was able to boot single user mode with a serial cable(after a long wait) and saw a stack dump in dmesg right after the kernel tries to load the open source "Radon" driver. Anyone know how to fix this? My kernel is "4.12.14-200.fc25.x86_64". I am running fedora core 25 which is what the "fc25" means in my kernel version.

I had a boot-to-blank-screen problem myself under Ubuntu after a routine software update that installed a modified nVidia display driver. It's probably a long shot that my experience is relevant to your problem, but since no one else has replied to your post, you might browse my blog entry at

https://www.linuxquestions.org/quest...ecovery-36345/

My admittedly drastic solution was to install Debian and overwrite Ubuntu altogether.

I have had this fedora installation since Fedora 14 and I don't feel like replacing it now. I do have my home partition on a separate drive so I could do that if I had too. My current workaround is to keep rebooting till it works. I think this is a kernel bug so maybe if I wait it will go away in a kernel update. I can't seem to get the proprietary ATI drivers to install but that might fix things. When I try and says I need another version of Xorg and I don't want to try that since it has more of a chance of breaking things worse then they are.

Oh, I know this has something to do with detecting monitors since when I turn that off(can't remember the command) I boot consistently but X-windows does not start.

The problem went away after an update.