I have the latitude 7490 and it worked great with Linux, FreeBSD and OpenBSD. The only issue is some hardware design issue where lifting it with one hand will cause it to freeze (possibly some stress causing a shock or a displacement).
The best resource to check support is https://dmesgd.nycbug.org/dmesgd
Consider balling up some electrical tape underneath the Ram stick. This solved this very specific issue with my laptop that was flexing too much and crashing.
This happened exactly to me also, I suspect some flexing in the motherboard or other component; right now it is complaining about the RAM and reseating hasn’t fixed it. Great laptop otherwise however!