Comment # 11 on bug 43939 from Anthony Foiani

(In reply to comment #10)
> With a bit of luck, this is similar to bug #60680, which will hopefully be
> bisected soon.

Hopefully!

> By the way, are you connecting to your monitor's HDMI input, or is there a
> HDMI->DVI adapter in there?

All the failures are with HDMI-to-DVI adapters of various sorts.  (Originally
it was a HDMI-to-DVI cable; I seem to have misplaced that cable, so at the
moment I'm using HDMI-to-HDMI + adapter + DVI-to-KVM + KVM-to-DVI ...

Which is a mess, but since the BIOS / UEFI and grub all seem to work with it,
it still looks like xorg / nouveau is doing something odd.

Thanks!