Comment # 9 on bug 1123228 from Michael Chang

We simply can't have a theme file target for all resolutions, at least the
bitmap font size is fixed property and cannot be scaled. The work is to limit
the resolution set with gfxmode='auto', ie the 'preferred mode' advertised by
the monitor. The upper limit is FHD 1920x1080 since it is popular nowadays that
most grub themes should be designed and tested in a range below it.

It is submitted to openSUSE but is not yet released for tumbleweed update, will
let you know if available for testing.

Thanks.