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My Ubuntu 20 is freezing here and there since I changed my disk to a NVMe SSD.

While debugging for kernel logs I noticed these errors:

[sex dez  4 11:34:55 2020] mce: CPU9: Package temperature above threshold, cpu clock throttled (total events = 9314)
[sex dez  4 11:34:55 2020] mce: CPU3: Package temperature above threshold, cpu clock throttled (total events = 9314)
[sex dez  4 11:34:55 2020] mce: CPU5: Package temperature above threshold, cpu clock throttled (total events = 9314)
[sex dez  4 11:34:55 2020] mce: CPU4: Package temperature above threshold, cpu clock throttled (total events = 9314)
[sex dez  4 11:34:55 2020] mce: CPU11: Package temperature above threshold, cpu clock throttled (total events = 9314)
[sex dez  4 11:34:55 2020] mce: CPU10: Package temperature above threshold, cpu clock throttled (total events = 9314)
[sex dez  4 11:34:55 2020] mce: CPU0: Package temperature above threshold, cpu clock throttled (total events = 9314)
[sex dez  4 11:34:55 2020] mce: CPU1: Package temperature above threshold, cpu clock throttled (total events = 9314)
[sex dez  4 11:34:55 2020] mce: CPU6: Package temperature above threshold, cpu clock throttled (total events = 9314)
[sex dez  4 11:34:55 2020] mce: CPU2: Package temperature above threshold, cpu clock throttled (total events = 9314)
[sex dez  4 11:34:55 2020] mce: CPU8: Package temperature above threshold, cpu clock throttled (total events = 9314)
[sex dez  4 11:34:55 2020] mce: CPU7: Package temperature above threshold, cpu clock throttled (total events = 9314)
[sex dez  4 11:34:55 2020] mce: CPU6: Package temperature/speed normal
[sex dez  4 11:34:55 2020] mce: CPU7: Package temperature/speed normal
[sex dez  4 11:34:55 2020] mce: CPU1: Package temperature/speed normal
[sex dez  4 11:34:55 2020] mce: CPU4: Package temperature/speed normal
[sex dez  4 11:34:55 2020] mce: CPU10: Package temperature/speed normal
[sex dez  4 11:34:55 2020] mce: CPU0: Package temperature/speed normal
[sex dez  4 11:34:55 2020] mce: CPU3: Package temperature/speed normal
[sex dez  4 11:34:55 2020] mce: CPU11: Package temperature/speed normal
[sex dez  4 11:34:55 2020] mce: CPU2: Package temperature/speed normal
[sex dez  4 11:34:55 2020] mce: CPU8: Package temperature/speed normal
[sex dez  4 11:34:55 2020] mce: CPU5: Package temperature/speed normal
[sex dez  4 11:34:55 2020] mce: CPU9: Package temperature/speed normal

This is how my CPU temp looks at the moment of this messages:

enter image description here

So as you can see, nothing unusual, and the kernel messages also state that within the same second, all CPU are both above threshold and also at a normal temperature.

Like, what the hell? What is going on?

https://streamable.com/6qq26o

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  • I suspect hardware. Following a hardware change, are you sure that there is still room for airflow in the machine? Could a cable have obstructed a fan? What kind of processor do you have? There are thermal specifications published by manufacturers. – Stewart Dec 4 '20 at 12:13
  • 73C at idle? That's a lot! Check your fans and maybe you'll need to reapply your CPU thermal paste. – Artem S. Tashkinov Dec 4 '20 at 12:20
  • It was not in idle. I had firefox and intelij opened. I have reapplied paste 1 week ago (and didn't notice any difference). On windows I see the temperature changing from 60ºC to 90ºC and back to 60ºC in less than a second. As if it is measuring a noise signal instead of the real CPU temp. Very strange. – Pedro D. Dec 4 '20 at 13:33
  • Here's a video streamable.com/6qq26o – Pedro D. Dec 4 '20 at 14:02
  • Is it a laptop? (I guess not since 6 cores, but the thermals seem awfully familiar) – Oskar Skog Dec 4 '20 at 14:11

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