Comment 11 for bug 1946149

Mauricio,

Interesting update, I agree that we need more info as to what the state is when the instance won't boot switching to the new 4.15 kernel. I'll check with my team in the morning and see if we can get additional info from AWS

I was trying a few more scenarios this evening the first being the most interesting.

Scenario 1
start with 5.4.0-1056-aws
install 5.4.0-1058-aws
reboot
confirm 5.4.0-1058-aws booted
reboot AGAIN
install 4.15.0-1113-aws
reboot
machine booted 4.15.0-1113-aws successfully

Scenario 2
start with 5.4.0-1056-aws
install 4.15.0-1112-aws
reboot
install 4.15.0-1113-aws
reboot
confirmed 4.15.0-1113-aws booted
then booted back into 5.4.0-1056-aws
removed 4.15.0-1112-aws and 4.15.0-1113-aws
rebooted again for good measure
confirmed still running 5.4.0-1056-aws
installed 4.15.0-1113-aws
rebooted
4.15.0-1113-aws successfully loaded