Public bug reported:

version_signature -> Ubuntu 5.3.0-48.41-generic 5.3.18
uname-a -> Linux work 5.3.0-48-generic #41-Ubuntu SMP Fri Apr 10 06:59:18 UTC 
2020 x86_64 x86_64 x86_64 GNU/Linux

dmesg and lspci logs attached.

$> lsb_release -rd
Description:    Ubuntu 19.10
Release:        19.10

The problem is with the kernel versions 5.3.0-48-generic, 5.3.0-46-generic, and 
5.3.0-45-generic.
Kernel version 5.3.0-42-generic is working fine.

Steps to reproduce:
Download some Java project (say, https://github.com/yegor256/cactoos/)
Open this Java project in IntellijIdea community version 
(https://www.jetbrains.com/idea/)
Type Ctrl+Shift+f (to search for all the files in a project)
This freezes the system for 7-8 seconds.

Similar behavior was seen when browsing firefox and or switching windows
(Alt+Tab). But not that easy to reproduce.

The problem does not occur when running heavy memory task (i.e. stress-
ng --vm-bytes $(awk '/MemAvailable/{printf "%d\n", $2 * 0.9;}' <
/proc/meminfo)k --vm-keep -m 1)

The problem does not occur when running heavy cpu task (i.e. sudo
stress-ng --cpu 8 --timeout 60 --metrics-brief)

** Affects: linux-meta (Ubuntu)
     Importance: Undecided
         Status: New

** Attachment added: "dmesg-lspci.logs"
   
https://bugs.launchpad.net/bugs/1872856/+attachment/5354223/+files/dmesg-lspci.logs

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https://bugs.launchpad.net/bugs/1872856

Title:
  whole system freezes frequently

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