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Due to the comment on my question Why low swappiness (10) leads to system crashes? I decided to run memory test.

When It starts automatically with the default "Fail-Safe" option, the screen seemed to be frozen (only red "+" was blinking) at Time: 0:00:01:

enter image description here

There is no response to neither (ESC) nor (c) and I may only guess what SP or CR stand for.

When I run "Multi-Threading (SMP)" option, screen changes for the first 27 seconds, and (c) responds with a list of options. Then the screen seems to be frozen again:

enter image description here

Is it some misbehavior, or does the test requires screen to be frozen?

abukaj
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    Firstly, memtest86 does not run within Ubuntu, so I'm not sure this is a Ubuntu specific question (as Ubuntu isn't running when memtest86 is!). I have noted on some boxes the program does lock up, yet if I take the RAM out of that box, and perform the same memory test (using same live Ubuntu ISO) on another box; I can get it to complete successfully; thus I don't see the issue as bad ram, just that the app has issues with some hardware/firmware combinations. I have no explanation sorry; just what I've experienced. – guiverc Sep 21 '23 at 10:14
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    I suggest that you try a newer version of the FOSS memtest86+ or the free memtest (free to download and use, but the source code is not open). See this link and this link. – sudodus Sep 21 '23 at 13:06

1 Answers1

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If it looks like it is frozen, it is frozen.

It is a known bug of Memtest86+ 5.01 coming with Ubuntu 20.04.

In my case the solution was to use ISO with Memtest86+ 6.20 downloaded from https://memtest.org.

abukaj
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