I’m trying a new CPU in my PC (Ryzen 5500GT) and I’m seeing:

  • Sporadic kernel panics during boot.
  • Random .ko.zst module files (different one each boot) complaining that ZST decompression failed checksum.
  • Random .so’s failing to find a symbol and causing programs to crash/fail to start.
  • Started a stress-ng sequential session at 5s per stressor and it hung up after a dozen stressors. Couldn’t ctrl-c it and also ps didn’t work anymore. 😅

Funny thing is, other than that the system runs fine (when it boots, that is).

Switched back to my old CPU (that’s the only change in the machine) and all of these things stopped.

That CPU that’s doing that is defective, correct? Just double-checking I’m not missing anything else.

I’ve reset BIOS between CPU swaps and left it at defaults. Could default settings cause a CPU to act like this?

Edit: cooling is good, all temps (chipset, CPU etc.) are in the 30’s C in idle, CPU went up to 75C when stressed. Have a tower cooler (Scythe Kotetsu) with a 120mm fan.

I’m also adding some voltage readings I took from sensors while the problematic CPU was installed:

Vcore: 840mV
+3.3V: 3.31V
+12.0V: 12.10V
+5.0V: 5.01V
VSOC: 780mV
VDDP: 900mV
DRAM: 1.21V
3VSB: 3.29V
VBAT: 3.26V
  • @KnightontheSun
    1•6 hours ago

    No, I would search for your motherboard model and forums to see what situations might match yours so that you might glean something useful as far as settings go. A quick check revealed nothing useful that stands out to me. Resetting all electrical connections was the lone useful tip. (The reddit link blocked me, lol. Fine) Perhaps more detailed (or different) search terms would produce better results.

    I think you’ve taken the right steps to this point. Another CPU to test with would prove useful (though your original should suffice). Or another board to test this CPU in. Perhaps the shop you procured this one from has one or the other? Otherwise, I would pursue replacement.

    • lemmyvoreOPEnglish
      1•4 hours ago

      Honestly I’ll just send it back at this point. I have kernel panics that point to at least two of the cores being bad. Which would explain the sporadic nature of the errors. Also why memcheck ran fine because it only uses the first core by default. Too bad I haven’t thought about it when running memtest because it lets you select cores explicitly.