Ubuntu
linux package

  1. Bug #1690085
  2. Comment #682

Comment 682 for bug 1690085

Revision history for this message
In , exander77 (exander77-linux-kernel-bugs) wrote :

This bug bugs me so much, that I registered to kernel bugzilla.

I tried many workarounds, nothing solved it.

Machine: ThinkPad A485 with AMD 2500U.
System:
Distributor ID: Ubuntu
Description: Ubuntu 19.04
Release: 19.04
Codename: disco
Kernel: Linux kni 5.0.0-13-generic #14-Ubuntu SMP Mon Apr 15 14:59:14 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

And the problem is still there.

Have idle=nomwait kernel parameter set, but tried many others. Disabling C6 states, everything.

I can reproduce this with 100% success by running my accounting software Flexibee (https://www.flexibee.eu/podpora/stazeni-flexibee/) which has a PostgreSQL backend. When it stars PostgreSQL, soft lockups start to appear, it gives me freezes and finally the system completely freezes after a 30 or so seconds. I can even reproduce it in VirtualBox, when starting the software in VirtualBox, it crashes the whole system (the host system!).

I can offer help with debugging this problem. This problem needs to go away. It is not present on Windows as far as I know.