Created attachment 691039 [details]
Xorg.0.log

On Saturday I updated from Tumbleweed to the latest Tumbleweed.
Among a few things, the kernel upgraded from 4.7.1 to 4.7.2.

After using the laptop all weekend, I suspended the laptop, moved to the dock,
resumed, and used two external monitors with the lid shut.
In the afternoon, I suspended, undocked, and resumed in another location. 
I had no laptop display.  If I suspended, and resumed again, the laptop briefly
displays the lock screen and then goes blank.  I could plug in an external HDMI
monitor, and could see my desktop.

I suspended, and moved back to the dock, resumed, and the external displays
worked.
If I suspended, undocked, and resumed, no display on the laptop.

If I bring up System Settings> Display settings, it shows the laptop and
external display.  If I use the id function, both identity pop-ups show up at
the same time on the external display.

Attached is
Xorg.0.log
hwinfo
journalctl
lspci
rpms list before upgrade
rpms list after upgrade
xrandr query output