Hi Marc, On Wed, May 06, 2026 at 02:01:20PM +0200, Marc Haber wrote: >On Tue, May 05, 2026 at 11:34:05AM +0100, Steve McIntyre wrote: >> On Tue, May 05, 2026 at 12:05:00PM +0200, Marc Haber wrote: >> > Package: grub-efi-arm64 >> > Version: 2.14-2 >> > Severity: normal >> > X-Debbugs-Cc: [email protected] >> > >> > Hi, >> > >> > I'm running Debian unstable on a Raspberry PI 4. The firmwware loads >> > u-boot, u-boot loads grub-efi-arm64, grub-efi-arm64 drops me on a grub >> > rescue shell with "error: symbol `grub_memcpy' not found.". Going back >> > to grub-efi 2.12-9+deb13u1 from trixie works without other changes to >> > the system. >> > >> > The information given below originates from the system after doing the >> > downgrade. >> >> OK, this is 99.9% certain to be a mismatch between the grub core image >> and the modules installed in /boot/grub. > >After a few rounds of debugging, I concur that your assessment is correct.
ACK. >> If you're on a Pi, then it's >> very likely you're booting using the removable media path. Could you >> give us the output of "ls -lR /boot/efi" as root please? > >I use the raspi firmware partitions as ESP and mount them as /boot/efi. Grub >is thus accessible as /boot/efi/EFI/debian/grubaa64.efi and you're right that >the grub 2.12 image that is placed there does not get updated when I do >grub-install. Hence, the boot with the 2.14 modules in /boot/grub fails; >setting prefix to the backup copy /boot/grub-works helps here. > >The efivars error message that other people noticed is due to the fact that >the Raspberry Pi 4 doesn't have persistent efivars. > >Can this cause the grubaa64.efi to not be replaced during grub-install? Which >software component in the stack is supposed to update /boot/efi/EFI on >grub-update? You're ralking about grub-install here. Are you running that by hand, or letting the system run it automatically during grub package upgrades? >Whatever that component is, it does not seem to do its job. Grub package upgrades *should* be handling this. -- Steve McIntyre, Cambridge, UK. [email protected] We don't need no education. We don't need no thought control.
