My Fedora 30 workstation keeps freezing up.  Can't open another session or reboot via the keyboard.  Only thing it responds to is a hard reset.

I've been using it for 3 years with no issues.

Ideas ?
How do I troubleshoot it ?


$ uname -a
Linux Brix 5.3.8-200.fc30.x86_64 #1 SMP Tue Oct 29 14:46:22 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

KDE Plasma Version: 1.15.5
KDE Frameworks Version: 5.59.0
Qt Version: 5.12.5
Hardware i7-5775R with 16 GB of RAM.