On Wed, Mar 03, 2021 at 05:20:39PM +0100, Karsten wrote: > there was no system update or an installation. It booted perfect.
Since you're reporting this against grub-pc 2.02+dfsg1-20+deb10u4, and since the mentioned grub_register_command_lockdown symbol was only introduced in that version, then there must have been a system update, because we only released that version yesterday. > I simply switched the PC off and the next time it does not boot any more! > Every entry of the boot menu ends up with the attached screenshot. > > To recover the PC i had to boot an Debian 10 installation from SD-Card and > select recover of grub. > > I have no idea if this is reproducible and the search for such an error is > empty. > So i report it here, if someone has the same error. What does "sudo debconf-show grub-pc" say? -- Colin Watson (he/him) [[email protected]]

