grub2 update problem by installing the new vanilla kernel from source

Hey, I'm trying to install the new vanilla kernel on tumbleweed. What I did: # zypper in gcc make ncurses-devel bison flex libelf-devel libopenssl-devel bc # make menuconfig # make -j4 # make modules_install # make install Everything fine, I get vmlinux (not vmlinuz), System.map, etc. In /boot I also have initrd. By trying to update grub2 (by running 'grub2-mkconfig') I don't get any errors (return code 0), everything looks fine, but after that the new kernel is not listed in the config file. Does anybody can tell me what I miss? I found a lot of documentation about SLE/openSUSE Kernel, but want to install new vanilla without any (open)SUSE-specific scripts, etc. Thank you. Cheers, Alex