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26 lines
904 B
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---
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layout: post
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title: "nVidia kernel module: key rejected"
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date: 2025-08-02 16:00:00 +0200
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comments: true
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categories:
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---
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# Situation
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On a Dell Precision 7520 running Debian, I found myself switching between UEFI / secure boot and legacy BIOS boot, and having trouble restoring the right boot settings after reenabling secure boot.
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The first problem was to identify the correct file to boot from: `EFI/debian/shimx64.efi`.
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# Kernel module load issue
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After disabling secure boot and then reenabling it again, kernel modules not loading despite updating nvidia-driver and kernel-image
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solution: reenroll MOK (Machine Owner Key):
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* `mokutil --import /var/lib/dkms/mok.pub` (set an import password)
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* `mokutil --list-new`
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* reboot into MOK management => provide import password => key reenrolled
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* modules loding :thumsbup:
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Debian documentation: [Secure Boot](https://wiki.debian.org/fr/SecureBoot)
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