My bias is anti
systemd, just so you know.-- scant documentation and there has never been a security review of its package.
I had a lot of weird issues running Jessie 8.5 and Trinity--it became a very unstable system. There was no proof (nor was there enough systemd documentation that would let you troubleshoot the issues) but a few clues led me to believe that systemd was involved somehow, in some of my issues.
I switched to Devuan (Debian Jessie without systemd) a couple of months ago, and a lot of the problems went away... Devuan just released their Release Canidate 1.0 in the last week or so... so I decided to do a bare metal install of Devuan and Trinity..
There were a few problems with installing the pair, but nothing serious. First problem was that the Deuvan Live Install didn't like my UEFI bios and after I attempted to install grub2's UEFI version using the Live distro. I then had to manually remove the version of grub2 that it installed, using apt from the console and a grub2 USB rescue stick.
The second issue was that I used a live USB stick to install Devuan and it put that info in /etc/sources.list as a CD install and when Trinity wanted to install stuff from the ppa it demanded the "distro CD" be mounted and would not pay any attention to my USB stick. I edited sources.list using nano and commented out the reference to the CD listing and then everything worked.
So if you can't get your problem solved and or you start having more problems, you might consider installing Devuan. It can upgrade Debian Jessie in place and that feature worked fine the first time I installed Devuan. It took about 15 minutes to do the upgrade and kept all of my configurations. I made a clone of my system (Clonezilla) before I upgraded and I suggest you do too...
Keith