Created attachment 134350 [details]
dmesg from ARCH 4.12.3 kernel

Linux 4.12.12 (confirmed in Arch) and 4.12.13 (confirmed in both my Gentoo and
Arch installs) appear to break nouveau's autodetection of the display and
gnome-shell crashes:

[   12.945435] nouveau 0000:0a:00.0: DRM: DDC responded, but no EDID for DP-1
[   13.087167] gnome-shell[901]: segfault at 28 ip 00007ffab9d672f5 sp
00007fff5771ba20 error 4 in libmutter-0.so.0.0.0[7ffab9d1d000+139000]
[   16.264988] nouveau 0000:0a:00.0: DRM: DDC responded, but no EDID for DP-1
[   16.286324] nouveau 0000:0a:00.0: DRM: DDC responded, but no EDID for DP-1

Attached dmesg from failed nouveau init.

Can we get movement on this?