This patch from mwhudson fixes the issue:
diff --git a/d-i/source/grub-installer/grub-installer b/d-i/source/grub-installer/grub-installer index 2329f0e801..ac9fd37ff3 100755 --- a/d-i/source/grub-installer/grub-installer +++ b/d-i/source/grub-installer/grub-installer @@ -641,7 +641,7 @@ db_progress INFO grub-installer/progress/step_install # to grub legacy, or vice-versa case "$grub_package" in grub-pc) - log-output -t grub-installer $chroot $ROOT dpkg -P grub-efi grub-efi-amd64-bin grub-efi-amd64 grub-efi-amd64-signed grub-efi-ia32-bin grub-efi-ia32 + log-output -t grub-installer $chroot $ROOT dpkg -P grub-efi grub-efi-amd64 grub-efi-ia32-bin grub-efi-ia32 ;; grub-efi) log-output -t grub-installer $chroot $ROOT dpkg -P grub-efi-amd64-signed
This patch from mwhudson fixes the issue:
diff --git a/d-i/source/ grub-installer/ grub-installer b/d-i/source/ grub-installer/ grub-installer .ac9fd37ff3 100755 grub-installer/ grub-installer grub-installer/ grub-installer progress/ step_install amd64-signed grub-efi-ia32-bin grub-efi-ia32 amd64-signed
index 2329f0e801.
--- a/d-i/source/
+++ b/d-i/source/
@@ -641,7 +641,7 @@ db_progress INFO grub-installer/
# to grub legacy, or vice-versa
case "$grub_package" in
grub-pc)
- log-output -t grub-installer $chroot $ROOT dpkg -P grub-efi grub-efi-amd64-bin grub-efi-amd64 grub-efi-
+ log-output -t grub-installer $chroot $ROOT dpkg -P grub-efi grub-efi-amd64 grub-efi-ia32-bin grub-efi-ia32
;;
grub-efi)
log-output -t grub-installer $chroot $ROOT dpkg -P grub-efi-