SSD- Ubuntu 20.04 kernel panic mode on the 5th day,

Solution 1:

Let's first check your Ubuntu file system for errors...

• boot to a Ubuntu Live DVD/USB in “Try Ubuntu” mode

In the terminal app:

• type sudo fsck -f /dev/nvme0n1
• type sudo fsck -f /dev/nvme0n2
• repeat the fsck command if there were errors
• type reboot

Update #1:

Let's increase your /swapfile from 2G to 4G and see if that helps...

Note: Incorrect use of the dd command can cause data loss. Suggest copy/paste.

In the terminal...

sudo swapoff -a           # turn off swap
sudo rm -i /swapfile      # remove old /swapfile

sudo dd if=/dev/zero of=/swapfile bs=1M count=4096

sudo chmod 600 /swapfile  # set proper file protections
sudo mkswap /swapfile     # init /swapfile
sudo swapon /swapfile     # turn on swap
free -h                   # confirm 16G RAM and 4G swap

Edit /etc/fstab, using sudo -H gedit /etc/fstab or sudo pico /etc/fstab.

Confirm this /swapfile line in /etc/fstab... and confirm no other “swap” lines... use SPACES in this line... confirm NO TABS...

/swapfile  none  swap  sw  0  0

reboot                    # reboot and verify operation

Update #2:

In reviewing new log files, nvme1 (Kingston) has a problem. It looks like it needs to be re-seated in its socket. Make sure it's pushed all the way in. Also need to check the firmware.