Occasionally I see my Dahua NVR rebooting at odd times. I have it scheduled for "maintenance" at 2:00am on Tuesdays. Today it rebooted at 4:26 as well.
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Contents: Reboot Symbol: 0x06f
Exactly the same issue here.
NVR5216-4KS2 and 4 cams purchased from Andy back in March. NVR just got setup on Saturday with a new WD Purple 4 TB drive. Already had one 5231R-Z camera that I had updated the f/w on, so that is all that is connected. I first saw a lockup on Saturday afternoon a couple of hours after I created a single IVS 'zig zag' tripwire to watch the street as an experiment - camera is two stories up. I noticed that objects with lower contrast against the light grey road would not trigger the rule. Small black dogs, yes ... small white dogs, no. Same with people and some cars. It missed a lot of people, bikes and cars rolling by without triggering. I even tried a 'sawtooth' pattern to see if it worked better with objects crossing more at a 90 deg. angle ... no change.
All my reboots are preceded by multiple, sequential Tripwire events in the log (multiple due to the zig zag detection line) except the '0x01' which had two tripwire events then a 'DEFAULT' event (whatever that means) entry preceding it. I have set iframe and fps to the same and still get the one or two second dropout after an IVS event (if not a crash). The 'crash' manifests as a total lockup - I can't see the mouse, let alone move it, click on it, etc. while connected directly to the NVR with VGA monitor. The NVR watchdog reboots itself a couple of minutes after a lockup. Total outage each cycle is about 5 minutes. Had 6 reboots with flag '0x6f' and one with flag '0x01' yesterday.
The IVR rule was turned off yesterday afternoon and no more reboots as of this morning. I'll setup one of the other new 5231R-Z cams without the f/w update tonight with a tripwire on it to test for a day. Can't say yet whether the camera with new f/w is a contributor or not. Will update here after my experiments.
BTW - Fan working OK, no detectable heat coming out of vent. Power brick barely warm to the touch.
Looking forward to see if the latest published f/w at least fixes the crashes. It's fugly for a security video system to drop 1-2 seconds of video when it detects an event, and useless if it crashes for 5 minutes several times a day. If not fixed, then I'll move on to
Blue Iris for now.