lilpete

No UPS here, the smart plug sits just between the PC's power supply and an extension lead. Still not a single hang or reboot since I removed the smart plug so I'm now pretty certain it was my problem all along. It is sat in the corner thinking about what it's done.

Stability has been fine still, guessing it was the smart plug somehow! I went for an i5-14400 in the end.

For what it's worth, I have since taken out the smart plug (Kasa KP115) that I had been using for energy monitoring and ever since it's been stable. It was linked to Home Assistant and didn't ever show any changes in state/being toggled. All I can think was something momentarily breaking the connection causing a brown-out. Either way without the plug it's been stable since, which is the longest it's been stable in a while. Will update if this changes.

As much as I wanted you to be wrong, with nearly a month of uptime it randomly rebooted this morning. Have you had any more joy since?

So, if anyone is interested, I replaced the memory, replaced the PSU, still with either reboots or random hangs and a flashing blue/red corrupted visual output. At a loss (because at this point I've replaced everything but the drives) I recreated the boot USB on a different USB stick. Where it was down to crashing every few days, so far it's up to 14 days with no hangs. So, despite all indications being hardware, it must have been a failing USB. Not known a failing USB stick to cause this kind of thing before, but, worth trying as a cheaper option then replacing literally the entire server to try and troubleshoot!

The rebooting by itself is a new one since the replacement motherboard, before it would just hang. I figured it was most likely hardware, just hoped it wasn't. I've ordered a replacement CPU so will give that a go and wait 3 weeks. I understand your point on Memtest, if it's still glitchy I'll give it a shot!

Sadly not. I've made a separate post on my issue with more information. https://forums.unraid.net/topic/187786-random-crashes-and-reboots-12th-gen-intel-i5-12400/

Any more information on your hardware/can you attach the unraid diagnostics?

Hi, For a while now I've been having random lock ups or reboots every few weeks, typically around the 3 week mark, which has stumped me. I have run Memtest, many passes, the version on the USB and a separate latest version, no errors in the RAM. I did initially have RAM errors that suddenly appeared after a BIOS update, but the kit was RMA'd and the new kit tests fine. Stress testing the CPU with tasks doesn't seem to trigger it. In fact I can't seem to ever trigger it, it usually just happens when the machine is near idle, although once happened whist watching something via Plex. Symptoms I've noticed: Nothing at all in the syslog (I did have it logging to USB for ages, now disabled but have it remotely going to syslog now). It will all look normal until nothing and then the next messages will be from the reboot. It would typically lock up with a sudden spike in power usage reported by the power monitoring plug connected to it, as if the processor were at full tilt. I don't regularly have a screen attached but one time I did connect it there was a funky RGB scatter pattern over the output. Other times I tried it would just be displaying the "Login" CLI prompt but be unresponsive. I recently replaced the motherboard (Asrock Z790 Pro RS to ASUS Prime Z790-P), figuring it was more likely that than the CPU failing, but a few days ago during a parity check it did exactly the same again with the exception that instead of hanging outright it rebooted. Again nothing in syslog. The previous motherboard did occasionally exhibit weird behaviour, not POSTing and hanging, but then would be fine again. I did try to enable power saving features in the BIOS, but disabled them all/reset to defaults to eliminate low power states potentially causing hangs. I've had a look through and all I could see weird and potentially related is the i915 driver. I am a little out of my depth here (ok, a lot) but it seems to be both modprobe in the go file, which I gather loads the module, but also blacklisted. I did have this in an i5 3rd gen and it's perhaps a holdover from there combined with something else I did. It's the only config weirdness I can spot and there was mention years back of this module causing issues. I did wonder if a "fresh" reinstall of Unraid may help but without any indication I didn't want to have to set everything back up again. I'm at a loss. Generally. My remaining suspects are the CPU somehow having a glitch, perhaps in the iGPU (based on the weird display output I saw), or the other suspect is the PSU, but it's a fairly solid Corsair (can't quite remember which at the moment!). Any suggestions/things to try? I'm tempted to buy a 14th gen i3 (i3-14100) to replace the i5-12400 with, but don't want to throw more money at it if it's something else. Thank you for reading this far!

It does seem to point to hardware. I'm glad you managed to get a return and sorted it, maybe I should stop poking around with software and hoping, and just replace the CPU, hope that does it, if not I can always re-sell.

Not an overly helpful reply, but just to say you're not alone. I'm on Unraid 7.0, i915 loads itself, and experiencing the same issues you are (no response at all, usually remotely reboot it using a smart plug but have seen the weird screen glitching). I have extensively run Memtest, various stress tests of the CPU, replaced the motherboard recently because it was all I could think of as CPUs much less frequently fail. Unfortunately it randomly rebooted a few days ago, which is different to random locking up I guess. Mine at least does it every 3 weeksish. I'm out of troubleshooting options beyond buying another LGA1700 CPU to see if it's that. Is yours still doing it? I'm tempted to try blacklisting the i915 module but it feels like a random stab in the dark.

Hi, I've been having issues getting the Minimum PWM Value to be detected, although the sensors and fan RPMs do largely show up (although it shows 4 when I have 5 fans). Given that the values are detected I'm guessing I don't need the acpi_enforce_resources=lax flag to be added and have a different (probably user related) problem? Many thanks!