Comment # 6 on bug 1094430 from Josef Reidinger

ah, not needed. I found it now:

2018-05-23 23:40:39 <3> linux-2iyu(3175) [Ruby] yast2/execute.rb:63 Execution
of command "[["/usr/sbin/grub2-mkconfig", "-o", "/boot/grub2/grub.cfg"]]"
failed.
Exit code: 1
Error output: Generating grub configuration file ...
Found theme: /boot/grub2/themes/openSUSE/theme.txt
Found linux image: /boot/vmlinuz-vanilla
Found initrd image: /boot/initrd-vanilla
Found linux image: /boot/vmlinuz-4.4.132-53-vanilla
Found initrd image: /boot/initrd-4.4.132-53-vanilla
Found linux image: /boot/vmlinuz-4.4.132-53-default
Found initrd image: /boot/initrd-4.4.132-53-default
Found linux image: /boot/vmlinuz-4.4.132-53-debug
Found initrd image: /boot/initrd-4.4.132-53-debug
Found linux image: /boot/vmlinuz-4.4.126-48-vanilla
Found initrd image: /boot/initrd-4.4.126-48-vanilla
Found linux image: /boot/vmlinuz-4.4.126-48-default
Found initrd image: /boot/initrd-4.4.126-48-default
Found linux image: /boot/vmlinuz-4.4.126-48-debug
Found initrd image: /boot/initrd-4.4.126-48-debug
Found linux image: /boot/vmlinuz-4.4.120-45-default
Found initrd image: /boot/initrd-4.4.120-45-default
Found linux image: /boot/vmlinuz-4.4.120-45-debug
Found initrd image: /boot/initrd-4.4.120-45-debug
Found Windows 7 (loader) on /dev/sda1
error: out of memory.
error: syntax error.
error: Incorrect command.
error: syntax error.
Syntax error at line 131
Syntax errors are detected in generated GRUB config file.
Ensure that there are no errors in /etc/default/grub
and /etc/grub.d/* files or please file a bug report with
/boot/grub2/grub.cfg.new file attached.


Important part is the first one which is "out of memory".

How much memory have this machine? And also do you run together with yast
something memory extensive?