Steps to reproduce: --- Ubuntu 18.04 image in AWS r5.metal instance type.
$ lsb_release -cs bionic $ dmesg | grep DMI: [ 0.000000] DMI: Amazon EC2 r5.metal/Not Specified, BIOS 1.0 10/16/2017 $ uname -rv 5.4.0-1045-aws #47~18.04.1-Ubuntu SMP Tue Apr 13 15:58:14 UTC 2021 $ sudo add-apt-repository ppa:canonical-kernel-team/ppa $ sudo apt install linux-image-4.15.0-1113-aws $ sudo grub-reboot 'Advanced options for Ubuntu>Ubuntu, with Linux 4.15.0-1113-aws' $ sudo grub-editenv /boot/grub/grubenv list next_entry=Advanced options for Ubuntu>Ubuntu, with Linux 4.15.0-1113-aws $ sudo reboot The system should not come back from reboot (which usually takes 10-15 minutes on r5.metal) -- 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 [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
