Agree with the comment and this particular update process is likely
acting as expected since an unsigned kernel was found. However, just to
set the context right - I didn't install the unsigned kernel. I rolled
back kernel 4.15-0-177 to work around Bug #1973482, using apt remove and
it
Public bug reported:
Dell XPS 15 9570. Dual boot with Windows 10. Linux was on 18.04 when
attempting to upgrade to 20.04. Had previously installed kernel
4.15-0-177 which was rolled back to working kernel 4.15-0-175 due to
issues already reported in Bug #1973482. Due to rollback, there was an