The kernel version prior to the upgrade was 4.18.0-15.
The upgrade installed kernel version 4.18.0-18.
Notice in the output below, that vmlinuz-4.18.0-15-generic file is missing in the /boot directory, although the corresponding initrd.img-4.18.0-15-generic file is present.
The kernel version prior to the upgrade was 4.18.0-15.
The upgrade installed kernel version 4.18.0-18.
Notice in the output below, that vmlinuz- 4.18.0- 15-generic file is missing in the /boot directory, although the corresponding initrd. img-4.18. 0-15-generic file is present.
$ ls -1 boot/{vmlinuz, initrd} *
boot/ initrd. img-4.18. 0-15-generic initrd. img-4.18. 0-18-generic vmlinuz- 4.18.0- 18-generic
boot/
boot/
This missing file causes Cubic associate the wrong files together.