$ uname -a Linux amd64-secureboot-testing 6.6.0-1001-ibm #1-Ubuntu SMP Wed Jan 10 16:31:12 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux
$ sudo dmesg | grep secure [ 0.000000] secureboot: Secure boot enabled [ 0.004598] secureboot: Secure boot enabled
$ cat /sys/kernel/security/lockdown none [integrity] confidentiality
$ uname -a t-testing 6.6.0-1001-ibm #1-Ubuntu SMP Wed Jan 10 16:31:12 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux
Linux amd64-secureboo
$ sudo dmesg | grep secure
[ 0.000000] secureboot: Secure boot enabled
[ 0.004598] secureboot: Secure boot enabled
$ cat /sys/kernel/ security/ lockdown
none [integrity] confidentiality