#StackBounty: #18.04 #ram #cpu Ubuntu periodically freezes

Bounty: 50

I have a strange problem. On a freshly installed Ubuntu 18.04, the systems seem to work fine. Suddenly, apparently for no reasons, the system hangs up, for 10 seconds or a couple of minutes, and I am unable to perform anything.

I tried to leave a top instance open and the RAM/CPU usage seems to be fine. I am on a i5 machine with 6GB of RAM, and 12GB of swap. I just tested ram and disk and they are error-free.

EDIT
Some additional information. I set the CPU frequency governor to performance, so it always work at maximum.

The problem appears more often when performing a CPU intensive operation, such as data analysis. After it finishes, the GUI becomes totally unresponsive, and it’s hard or impossible to get it back to work.


Get this bounty!!!

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