> On 5 Mar 2021, at 03:23, viverna <viverna@???> wrote:
>
> Yesterday I updated one of my computers with apt-get upgrade. This packages are upgraded:
>
> grub-common grub-pc grub-pc-bin grub2-common
>
> dpkg install from version 2.02+dfsg1-20+deb10u3 to version 2.02+dfsg1-20+deb10u4
>
> 2.02+dfsg1-20+deb10u4 seems came from to:
> http://deb.devuan.org/merged beowulf-security/main
>
> 2.02+dfsg1-20+deb10u3 is in:
> http://deb.devuan.org/merged beowulf/main
>
> Upgrading system does not produce or show any problems and then I halt the system.
>
> I use Devuan Beowulf for all my pc. In this computer there is only 1 hd, partition type gpt, 3 partitions:
>
> /dev/sda1 EFI System
> /dev/sda2 Linux filesystem
> /dev/sda3 Linux swap
>
> I switched on the pc later and grub rescue appears. WTF?
>
> I solved (temporarily) the problems with:
>
> set prefix=(hd0,gpt2)/boot/grub
> set root=(hd0,gpt2)
> insmod normal
> normal
>
> and grub menù appears.
>
> Login with root, and then update-grub... grub-install... and so on...
>
> Restart the system. Grub rescue. Then login with root. New tests. Grub rescue again. [N times?]
>
> At the end I downgrade from 2.02+dfsg1-20+deb10u4 to 2.02+dfsg1-20+deb10u3 the upgraded package.
>
> update-grub and grub-install. Reboot. Grub works!
>
> I am currently reluctant to upgrade again.
>
> And now the question. Has anyone reported the error in Devuan? Has anyone haved this problem?

Seems to be a bit of news about the latest update.
https://9to5linux.com/patches-for-multiple-new-grub2-security-flaws-start-rolling-out-to-linux-distros-update-now

The changelog mentions changes to secure boot. Could that be related to the issue?

https://metadata.ftp-master.debian.org/changelogs//main/g/grub2/grub2_2.02+dfsg1-20+deb10u4_changelog