Hey Kleber, Thanks for confirming.
I guess there might be something wrong with the boot process on r5.metal, specifically: - there's no issue with kexec boot, just with normal boot (same code and from/to versions) - there's no issue with normal boot on similar instance types (r5d.metal, r5.24xlarge) - rarely, but sometimes, it works with normal boot. I'm looking forward to hearing back from Ian on whether he could get additional information from AWS, or how to reach out to them, about getting the serial console log from the r5.metal instances internally, via AWS support, so we know what the actual issue is. -- 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