Dear community,
I am experiencing problems enabling UEFI secure boot on my HP Elitebook when booting the PREEMPT RT kernel using linux-image-5.10.0-33-rt-amd64
Everything works fine when I use the stock linux-image-5.10.0-33-amd64 kernel. Booting the RT kernel also seems to work initially, I get a running system. Both systems report
"secureboot: Secure boot enabled" when I grep dmesg output.
However, running "efibootmgr" under the RT kernel reports "EFI variables are not supported on this system." Also, calling "modprobe efivarfs" fails with the RT kernel.
For reference I have added dmesg of both kernels.
In line 521 of the standard kernel, "Registered efivars operations" is reported. This is missing on line 523 in the RT dmesg output.
What can I do
Regards
Richard
I am experiencing problems enabling UEFI secure boot on my HP Elitebook when booting the PREEMPT RT kernel using linux-image-5.10.0-33-rt-amd64
Everything works fine when I use the stock linux-image-5.10.0-33-amd64 kernel. Booting the RT kernel also seems to work initially, I get a running system. Both systems report
"secureboot: Secure boot enabled" when I grep dmesg output.
However, running "efibootmgr" under the RT kernel reports "EFI variables are not supported on this system." Also, calling "modprobe efivarfs" fails with the RT kernel.
For reference I have added dmesg of both kernels.
In line 521 of the standard kernel, "Registered efivars operations" is reported. This is missing on line 523 in the RT dmesg output.
What can I do
Regards
Richard
Statistics: Posted by lerichi — 2025-01-26 23:31 — Replies 0 — Views 10