Having an issue with my previously working server. The sequence of events is as follows.

Friday

• Installed new mobo, CPU, RAM, and a new 14TB drive

• Updated apps and dockers that needed updates

• Started preclear of drive to add to array

Saturday

• Woke up and the server was unreachable, monitor just showed black screen, no command line.

• Did a hard reboot. Server booted into GUI mode with no issues.

• Started the preclear again. Preclear finished and the drive was added to the array.

• Server working fine, dockers were launched everything was working.

Monday

• Wake up and the server is once again unreachable. The monitor shows the GUI but it's totally frozen. Hard reboot.

• Server boots up into the command line but seems to be stuck in a login loop, when I try to run any commands such as "diagnostics" it just asks me to login again

• Tried to boot into the GUI but it's just a black screen.

• When I try to reach the server from another computer to view the web GUI it asks me to create a new password. When I type in the password and click "set password" the webpage hangs.

• Got into the command line and saw this error

  • malloc: jobs.c:1435: assertion botched

    free: start and end chunk sizes differ

    Aborting...

• It was hung on aborting for about 5 minutes, I CTRL+C and was able to get back to the login line, logged in a few times and was eventually able to run "powerdown" in command line.

I have attached syslog and some photos. My research seems to suggest there may be a bad plugin? but wanted some confirmation before I start trying to delete corrupt files or something.

syslog

By the description, looks more like a hardware issue, but you can reboot in safe mode to rule out any plugins.

36 minutes ago, JorgeB said:

By the description, looks more like a hardware issue, but you can reboot in safe mode to rule out any plugins.

Boot into safe mode was successful. I can't boot into the GUI in safe mode. Still get black screen but command line safe mode and the web GUI works. I got a diagnostics file out and have attached it here.

tower-diagnostics-20250617-1516.zip

If it boots in safe mode it suggests a plugin is the issue, uninstall or disable them all and retest in normal mode.

Ok I disabled almost all of the plugins except Appdata Backup. I'm assuming as it's such a well used plugin that it's not the issue. The server boots, still won't boot into the GUI (just a black screen with a blinking cursor) but I can access it from the web GUI. I can start the array just fine but when I go to start dockers some of them start and some just don't and then eventually the web GUI becomes unresponsive and I have to reboot. I updated to 7.0.13, thinking maybe there was a bug fix. Managed to pull some diagnostics before the last freeze-up. I was removing the plugins in batches and before I removed the unraid connect plugin the server booted but gave me a "The Unraid API is currently offline" message. Not sure if that's related.

I'm at a loss here, it seems like something fundamental is broken.

tower-diagnostics-20250618-1649.zip

GUI boot mode not working is a separate issue, typically related to the GPU.

Btrfs is detecting data corruption and there are also some segfaults, so start by running memtest.

Ok memtest identified a bad stick. I have gotten new RAM but is there anything I need to be doing before or after I replace it? Should I run a memtest again or can I just install the new RAM and boot up as normal?

I'd suggest running memtest for 24hours to rule out any more bad ram.