About less than a minute after turning off or unplugging the AC adapter, Pop OS 19.10 hangs and only the mouse continues to be functional. This however does not pose as a problem if warm booting from Windows OS or when using Windows itself. Had only encountered this issue recently after sending my laptop for an SSD replacement. Before the repair, I had previously used Ubuntu 18.10, kernel version 4.18 with no issues. However when I recently tried out Lubuntu 19.10, I am also faced with this problem.
*** This bug has been marked as a duplicate of bug 206365 ***