I don't get that on my Mini but I do get a black screen that comes and goes. At random times my display will turn black (not off) and come back. Once, twice, maybe several times and for about a second and a half each time. Usually it can be ignored and go away other times it gets bad enough that I turn the monitor off, wait, turn it back on and good for the day. It has done this since I moved to display port vs HDMI. I moved because the color setting on HDMI require a trick to use or it thinks you are connected to a TV.
If your example is only every once in a while, I will take it.
I seem to be getting kernel panics for the first time on any of the Developer Releases of Sierra.
Seems that its associated to the WindowServer and the new Nvidia drivers that they've updated to.
Mind you I have a 2010 Mac Mini. I've never ever have gotten a kernel panic on this machine.
"
Anonymous UUID: E0115385-1BC5-4E0D-AB6D-6FC3CBDE5833
Thu Feb 9 08:34:35 2017
*** Panic Report ***
panic(cpu 1 caller 0xffffff80013fcc5d): Kernel trap at 0xffffff7f83d30681, type 13=general protection, registers:
CR0: 0x0000000080010033, CR2: 0xffffff80e3595004, CR3: 0x00000001f71af000, CR4: 0x0000000000002660
RAX: 0x000000000008fff7, RBX: 0x0000000000000002, RCX: 0x0000000000000001, RDX: 0x0000000000000001
RSP: 0xffffff912a20b9e0, RBP: 0xffffff912a20ba10, RSI: 0x000000000000ffff, RDI: 0xffffff80d2379000
R8: 0xffffff8014fcb804, R9: 0x0000000000000000, R10: 0xffffff8014fcb608, R11: 0xffffff7f83d2bcb6
R12: 0x698e148016301804, R13: 0x000000000000ffff, R14: 0x0000000000000001, R15: 0xffffff80d2379000
RFL: 0x0000000000010202, RIP: 0xffffff7f83d30681, CS: 0x0000000000000008, SS: 0x0000000000000010
Fault CR2: 0xffffff80e3595004, Error code: 0x0000000000000000, Fault CPU: 0x1, PL: 0, VF: 0
Backtrace (CPU 1), Frame : Return Address
0xffffff80e278ddf0 : 0xffffff80012e88ac
0xffffff80e278de70 : 0xffffff80013fcc5d
0xffffff80e278e050 : 0xffffff8001299543
0xffffff80e278e070 : 0xffffff7f83d30681
0xffffff912a20ba10 : 0xffffff7f83d2c8a3
0xffffff912a20ba70 : 0xffffff7f83d2bd50
0xffffff912a20bac0 : 0xffffff80018e2789
0xffffff912a20bb20 : 0xffffff80018e07b2
0xffffff912a20bb80 : 0xffffff80018e9671
0xffffff912a20bcc0 : 0xffffff80013bbf08
0xffffff912a20bdd0 : 0xffffff80012edb2c
0xffffff912a20be30 : 0xffffff80012ca4b1
0xffffff912a20be80 : 0xffffff80012deb27
0xffffff912a20bf10 : 0xffffff80013e8c1e
0xffffff912a20bfb0 : 0xffffff8001299d66
Kernel Extensions in backtrace:
com.apple.GeForceTesla(10.0.2)[6718444C-A0BE-3D2E-A948-5562C1E6E602]@0xffffff7f83d09000->0xffffff7f83dcffff
dependency: com.apple.iokit.IOPCIFamily(2.9)[61BC8602-4601-3A2C-850A-E6DD2E5F13B6]@0xffffff7f81c23000
dependency: com.apple.iokit.IONDRVSupport(514.6)[90E0E034-1DE2-3D16-A105-5C75840AD16D]@0xffffff7f820e8000
dependency: com.apple.iokit.IOGraphicsFamily(514.6)[7B082584-659C-3534-A470-92AB5F58BD02]@0xffffff7f820a0000
dependency: com.apple.nvidia.classic.NVDAResmanTesla(10.0.2)[EE3AC36E-C7B2-3DD6-8E34-AE262BEE1AA3]@0xffffff7f820f8000
BSD process name corresponding to current thread: WindowServer
Boot args: b"
[doublepost=1486648427][/doublepost]I've already filed a report on it.