A Linked monitor will not trigger an upstream monitor after zone changes

Discussions related to the 1.36.x series of ZoneMinder
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lk777
Posts: 14
Joined: Wed Jun 02, 2021 2:32 pm

A Linked monitor will not trigger an upstream monitor after zone changes

Post by lk777 » Mon Jun 21, 2021 1:23 pm

I am experiencing the following issue with the linked monitors.
My setup:
A High Resolution monitor (Nodect): Linked Monitor - Low Resolution (Modect) *(Storage JPEGS, Video writer - disabled).
Everything works until I change/add zones on the Low Resolution monitor. It will not trigger a High Resolution monitor any longer after these changes.
And only zoneminder service restart fixes it.

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iconnor
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Re: A Linked monitor will not trigger an upstream monitor after zone changes

Post by iconnor » Mon Jun 21, 2021 8:48 pm

What version of ZM? I fixed an issue like this back during 1.35 development, but am fairly confident in the code now.

lk777
Posts: 14
Joined: Wed Jun 02, 2021 2:32 pm

Re: A Linked monitor will not trigger an upstream monitor after zone changes

Post by lk777 » Wed Jun 23, 2021 12:12 pm

Ubuntu 20.04 LXD container (a host 20.04 as well)

ZM 1.36.4

lk777
Posts: 14
Joined: Wed Jun 02, 2021 2:32 pm

Re: A Linked monitor will not trigger an upstream monitor after zone changes

Post by lk777 » Wed Jun 23, 2021 6:54 pm

And one more.
Just do not want to start a new topic:
Ubuntu
/usr/share/zoneminder/www/api
not all files have the right ownership, at least, in my installation they were root:root instead of www-data:www-data

It flooded logs with the cake permissions errors.

lk777
Posts: 14
Joined: Wed Jun 02, 2021 2:32 pm

Re: A Linked monitor will not trigger an upstream monitor after zone changes

Post by lk777 » Wed Jul 07, 2021 7:55 pm

Update:

Now it is v1.36.5
It is not only changing zones (as I initially thought) but even opening/closing zones breaks monitors link.

dangelsaurus
Posts: 2
Joined: Fri Jul 23, 2021 10:43 pm

Re: A Linked monitor will not trigger an upstream monitor after zone changes

Post by dangelsaurus » Fri Jul 23, 2021 10:45 pm

same issue here. linked monitors work fine until you change the motion zone in the lower res monitor... v1.36.5

Magic919
Posts: 548
Joined: Wed Sep 18, 2013 6:56 am

Re: A Linked monitor will not trigger an upstream monitor after zone changes

Post by Magic919 » Sat Jul 24, 2021 6:45 am

It has been mentioned on a few threads. Either a ZM restart or a change of the monitor type (then change back) will sort it.

dangelsaurus
Posts: 2
Joined: Fri Jul 23, 2021 10:43 pm

Re: A Linked monitor will not trigger an upstream monitor after zone changes

Post by dangelsaurus » Sun Jul 25, 2021 2:56 am

thanks Magic, that's reasonable. I'll give that a shot. Still a little new to ZM

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