On 23/11/22 18:22, Samuel Sieb wrote:
On 11/22/22 22:45, Stephen Morris wrote:
On 23/11/22 12:04, Samuel Sieb wrote:
On 11/20/22 23:54, Stephen Morris wrote:
I am getting the following error message displayed before the
display of the grub boot menu, can someone explain to me what this
means and why it is occurring in F37 when it was never produced in
F36, and what I need to do to rectify it?
error:
../../grub-core/kern/efi/sb.c:169:prohibited by secure boot policy
That's not a file you'll find on your system. That's just
identifying where in the grub code that the error message is coming
from. As you say the grub-gfxmode command isn't working now, I
would assume that's what is causing the error message because it's
not allowed with secure boot enabled. You most likely have to stay
with the graphics mode that is initialized by the BIOS.
Thanks Samuel. Are you saying that grub command is not allowed if F37
because F37 is now booting via grub with full secure boot enabled,
whereas with the way F36 booted that grub command was honoured and
the menus and theme were displayed in that resolution with full
secure boot enabled?
That was just a guess and I think it was wrong now. I checked the
source and that error message is related to file loading. I would
have to see your config file to make a guess about what file it was
trying to load.
Following on from my previous mail, I tried the identified fix for F37,
which updated a number of grub packages, rebuilt grub.cfg and rebooted,
and the fix has made things significantly worse. There are now a lot
more messages produced including the original one, the resolution is
still ignored and the graphics terminal has been disabled. I'm not sure
if I can take a photo of the messages as they disappear significantly
quicker than before.
I'll not try to downgrade grub to back the fix out.
regards,
Steve
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