I ran into this issue, but I use lightdm instead of SDDM. A simple solution on AMD is to force Early KMS:
``` echo "amdgpu" | sudo tee --append /etc/initramfs-tools/modules sudo update-initramfs -c -k $(uname -r) ``` This will force AMD drivers to be loaded very early on boot, workarounding the race condition entirely. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2063143 Title: sddm/simpledrm race conditions leads to frequent black display on bootup To manage notifications about this bug go to: https://bugs.launchpad.net/plymouth/+bug/2063143/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
