TLDR: I think 6.12 is not properly handling OOM errors, causing hard locks

 

I've had zero luck with 6.12. It always would just hang up and require a hard reboot. Then I'd downgrade back to 6.11.5 and wait for the next 6.12.x and try again, same result. The longest I'd make it is maybe an hour or two before it would lock up.

 

I also have been having issues with OOM errors on 6.11.5 that I could never fix. I finally figured out it was the Unassigned Devices plugin causing that. I removed and reinstalled that and the OOM went away in 6.11.5. After a day of no OOM errors (I always got them within 30 minutes of a reboot and then occasionally after that) I decided to try 6.12.4 again.

 

I've been up and running with no issues or lockups on 6.12.4 for a few days now. Before that the longest I got on 6.12 with no lockups was maybe 2 hours.

 

So the only thing I changed was fixing the cause of the OOM error and now 6.12 runs fine it seems. It looks like 6.12 is not handeling things like OOM issues correctly (killing the offending process) and instead is letting the system go until it totally locks up. It's possible there are similar issues other people are having that are causing their lockups and system freezes. Issues that 6.11 would handle before crashing, 6.12 does not

 

Just a followup, I duplicated this on a second server.

 

- Built a new server with 6.12.4

- It ran fine for almost a day, then hung up for hours.

- When I was finally able to access it again, I had an OOM error related to "Avahi-Daemon"

 

The only difference between this one and my main server is that this new one also had the "Unassigned Devices Plus" plugin in addition to the regular one. I'd forgotten I removed that one from my main server as well as the regular one. I reinstalled the regular one but never installed the Plus one again on my main server

 

So I can confirm one od the Unassigned Devices plugins (regular or plus) is causing an OOM. The OOM is causing 6.12 to become totally unresponsive

3 hours ago, shaunvis said:

Just a followup, I duplicated this on a second server.

 

- Built a new server with 6.12.4

- It ran fine for almost a day, then hung up for hours.

- When I was finally able to access it again, I had an OOM error related to "Avahi-Daemon"

 

The only difference between this one and my main server is that this new one also had the "Unassigned Devices Plus" plugin in addition to the regular one. I'd forgotten I removed that one from my main server as well as the regular one. I reinstalled the regular one but never installed the Plus one again on my main server

 

So I can confirm one od the Unassigned Devices plugins (regular or plus) is causing an OOM. The OOM is causing 6.12 to become totally unresponsive

Post diagnosics.