It seems that I am also hit by bug 1169038. In fact, using the recent kernel from https://download.opensuse.org/repositories/home:/tiwai:/bsc1169038/standard/ (i.e. kernel-default-5.3.18-lp152.1.1.g5ac1e9a.x86_64), which also contains Giovanni's fix, boots fine (independent on the graphic mode).