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2023-09-21 05:24| 来源: 网络整理| 查看: 265

When I started my computer today, GRUB was blocked by this message :

Ubuntu has been blocked by the current security policy

I'm using a Lenovo Yoga, Ubuntu 18.04 LTS dual-booted with Windows 10. This window didn't let me access to GRUB, even by forcing booting to Ubuntu by accessing the MBR menu (with Fn + F12). My lonely choice was an OK on that message, and the computer booted automatically on Windows 10.

So I disabled Secure boot into BIOS settings, and that solved the previous issue, BUT I would like to solve it inside Ubuntu rather than in BIOS. My BIOS is in UEFI mode.

Yesterday, nothing special done, just update (and I removed Jonathonf python 3.6 PPA, which removed public access with sudo add-apt-repository -r ppa:jonathonf/python-3.6, because python packages won't let system to update).

What must I change into Ubuntu parameters to avoid this issue? So I could re-enable Secure boot inside BIOS.

How could I solve this issue without disable Secure boot BIOS option?

NB : I tried a solution from this Ubuntu forum link

sudo apt-get clean sudo apt-get autoclean sudo apt-get autoremove sudo apt-get -f install sudo apt-get install grub-efi-amd64-signed

But after re-enabling it, it didn't work.

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