Hallo,
Ik had hetzelfde probleem met mijn Acer. Met deze stappen moet het lukken, zoniet, pb mij dan even
groet,
Gerard
-- Boot Ubuntu Live USB
-- open terminal
sudo -s
ubiquity -b
-- Press Continue testing after installation is over.
sudo mount /dev/sda2 /mnt #sda2 is the root partition
sudo mkdir /mnt/boot/efi
sudo mount /dev/sda1 /mnt/boot/efi #sda1 is the efi partition
for i in /dev /dev/pts /proc /sys; do sudo mount -B $i /mnt$i; done
modprobe efivars # make sure this is loaded
-- notice the bootx64 file
efibootmgr --verbose
-- We will reinstall grub-install for a 64bit version
apt-get install --reinstall grub-efi-amd64
grub-install —no-nvram —root-directory=/mnt
chroot /mnt
update-grub
cd /boot/efi/EFI
cp -R ubuntu BOOT
cd BOOT cp grubx64.efi bootx64.efi
-- You are finished, reboot the system.