Hello, all. Adding the following information regarding a workaround found by a customer on this exact situation @ Ubuntu Bionic 18.04.3.
He found that this should be caused by not importing UEFI:MokListRT cert 'Canonical Ltd. Master Certificate Authority, and devised the following workaround steps: (1) Convert CA certificate in crt format to der format: # openssl x509 -outform der -in /etc/ssl/certs/ca-certificates.crt -out new-ca.der (2) Import the CA certificate using the mokutil tool: # mokutil --import new-ca.der (3) Reboot OS (4) After reboot into MOK management interface, enter (5) Select Enroll MOK > Yes, then input the password, then reboot (6) After OS startup finish, we found that the kdump-tools works root@ubuntu:~# /etc/init.d/kdump-tools status ● kdump-tools.service - Kernel crash dump capture service Loaded: loaded (/lib/systemd/system/kdump-tools.service; enabled; vendor preset: enabled) Active: active (exited) since Tue 2019-10-08 16:13:16 EDT; 55min ago Main PID: 1061 (code=exited, status=0/SUCCESS) Tasks: 0 (limit: 4915) CGroup: /system.slice/kdump-tools.service Oct 08 16:13:15 ubuntu systemd[1]: Starting Kernel crash dump capture service... Oct 08 16:13:15 ubuntu kdump-tools[1061]: Starting kdump-tools: * Creating symlink /var/lib/kdump/vmlinuz Oct 08 16:13:15 ubuntu kdump-tools[1061]: * Creating symlink /var/lib/kdump/initrd.img Oct 08 16:13:16 ubuntu kdump-tools[1061]: * loaded kdump kernel Oct 08 16:13:16 ubuntu kdump-tools[1318]: /sbin/kexec -p -s --command-line="BOOT_IMAGE=/boot/vmlinuz-4.15.0-55-generic root=/dev/mapper/ubuntu--vg-root ro nr_cpus=1 systemd.unit=kdump…b/kdump/vmlinuz Oct 08 16:13:16 ubuntu kdump-tools[1321]: loaded kdump kernel Oct 08 16:13:16 ubuntu systemd[1]: Started Kernel crash dump capture service. Hint: Some lines were ellipsized, use -l to show in full. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1840941 Title: kdump fails to start with secure boot enabled To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/shim-signed/+bug/1840941/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
