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 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1946149 Title: Bionic/linux-aws Boot failure downgrading from Bionic/linux-aws-5.4 on r5.metal To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-aws/+bug/1946149/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
