------- Comment From [email protected] 2026-03-02 05:45 EDT------- I upgraded to kernel 7.0.0-2-generic as described and rebooted. System could be IPLed as expected from DASD. Secure Boot: 1. With production key only, I got "Signature verification failure for component 3" - expected, OK, DASD part 2. With development unstable PPA key only, I got "Signature verification failure for component 1" - expected, OK, zipl part 3. With both of the above keys I was able to securely boot the LPAR with kernel 7.0.0-2 from DASD, as expected.
root@a83lp32:~# uname -a Linux a83lp32.lnxne.boe 7.0.0-2-generic #2-Ubuntu SMP PREEMPT Fri Feb 27 10:24:48 UTC 2026 s390x GNU/Linux root@a83lp32:~# lsreipl Re-IPL type: eckd Device: 0.0.7e65 bootprog: 0 br_chr: auto Bootparm: "" Loadparm: "" clear: 0 Secure boot: 1 root@a83lp32:~# -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2142693 Title: [26.04] Please test secureboot and lock-down with 7.0.0 kernel (s390x) on Resolute Raccoon To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/2142693/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
