A followup to my last comment. In final paragraph, I mentioned that Takashi has older kernels. I found that information in bug 1175908 I have tried several of those older kernels in Tumbleweed with ia32 efi booting. I used "linuxefi" in my attempts to boot. kernel-default-5.6.15-1.1.gbfa465b.x86_64.rpm kernel-default-5.5.13-1.1.g0af205d.x86_64.rpm kernel-default-5.4.14-1.1.gfc4ea7a.x86_64.rpm Those all boot without a problem. However: kernel-default-5.3.12-1.1.g60a2268.x86_64.rpm will not boot with "linuxefi". It looks as if there was a change between 5.3 kernels and 5.4 kernels.