Factorio Forums

We are running a headless server with no mods on Google Cloudand generally it works great but every once in a while we get repeated desyncs.

Attached is a zip with 3x desync reports
- It was just me on the server
- I generally have a <15ms ping to the server
- factorio is the only thing running on a single core server with 3.75GB of RAM, our factorio process generally uses just under 1GB.
- Server: Linux factorio-server 4.4.0-31-generic #50-Ubuntu SMP Wed Jul 13 00:07:12 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
- Client: OSX 10.11.6

https://drive.google.com/open?id=0B0KQR ... 0ZOdVl2NjA

Are you using mods?

No mods (I did say that in the original post).

It appears to be save related. We have the server set to autosave every 5 minutes and have 24 slots. I slowly went back in time until I found a save that worked.

Here is a drive folder of the saves: https://drive.google.com/open?id=0B0KQR ... C1vdTF5TVU

save 20 works saves 21-24 result in immediate desync.

We restarted from save 20 and played several more hours (yay factorio) without problem.

Thanks for the saves. I was able to reproduce the desync. I'm looking into it and will report back when I've figured out what's going wrong.

Awesome, glad to give you usable data. I realized that after I verified save 20 worked I never went and re-verified that save 24 caused the desync still and it wasn't some transient issue.

Fixed for 0.13.16.

Awesome thanks! For a curious software engineer can you share what the bug was?

Fast replacing a filter inserter with the condition "set filter" with an inserter that doesn't have filters.

Yay! So glad we got it fixed! This isn't the first time we've hit this bug either )