Created attachment 125268 [details]
My latest Xorg.0.log

Even though it's irrelevant to the fact that I couldn't even get console video,
here's my Xorg.0.log.  I suppose it may provide more detailed chip info than
the kernel log.  Also, I should mention that I diffed dmesg, Xorg.0.log, and
xrandr outputs with and without video, and found no differences outside of time
stamps (and of course the chosen crtc in xrandr when using that technique to
get it working, but nothing is printed to kernel or X logs during this
procedure).