https://bugs.freedesktop.org/show_bug.cgi?id=83792
--- Comment #2 from Tim Nelson wayland@wayland.id.au --- Regarding "not worked", these kernels have always hung on boot with a blank screen; most of these are from my attempts to upgrade to various different versions of Fedora between 13 (currently working for me) and 20 (the one I'm attempting to install now). I suspect that these kernels weren't being passed the "nomodeset" option by default, but I have no evidence of that, and I don't plan to go back and look unless it becomes necessary, since I want to get the Fedora 20 kernel working, rather than the intermediate ones.
When I boot the machine (after removing the "quiet rhgb" options, and adding "debug"), the machine spits out a bunch of log messages that scroll too quickly for me to see, and then the screens go blank (the LCD one displaying the message "No Signal"), and I can't access the machine remotely at that point; unfortunately this means that I also can't post the relevant dmesg and xorg information. I think the machine is hanging before the network card is enabled, although I will try to double-check that.
As for bisecting the kernel, I can have a go, but I suspect it will be the original KMS commit.
Thanks for the time you've put into this. I'll have some more time to put into it later, but probably not for another week or two, unfortunately.