New installation and S/G bug (white screen)

two days ago I installed openSUSE-Tumbleweed-DVD-x86_64-Snapshot20230704-Media.iso to my computer with Ryzen 7900X. I use iGPU and I experienced the scatter-gather bug, i.e. I had only a white screen with the mouse cursor instead of sddm.

I didn’t give up and I solved it. For the record I write here how so others can solve it too.

If you see just a white screen instead of login screen you have to reboot and edit kernel parameters in grub2 boot menu (note that both default and recovery modes are affected by this bug).

You need to add these two parameters:


so the line looks like this (your disk UUID will be different):

GRUB_CMDLINE_LINUX_DEFAULT="splash=silent resume=/dev/disk/by-uuid/08b832c3-f485-49be-865a-ff462c95ca89 mitigations=auto quiet security=apparmor amdgpu.sg_display=0 amdgpu.debugmask=0x10"

Press F10 to continue boot and now you should see normal login screen. To make this change permanent, you need to edit file /etc/default/grub in the same way as above and then run

grub2-mkconfig -o /boot/grub2/grub.cfg

Both must be done with superuser rights.
Hope this is useful.