replacing 'quiet splash' with just'quiet' from GRUB_CMDLINE_LINUX_DEFAULT /etc/default/grub also allows a clean boot.
** Attachment added: "prevboot.txt" https://bugs.launchpad.net/ubuntu/+source/plymouth/+bug/2065321/+attachment/5779622/+files/prevboot.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2065321 Title: Kubuntu 24.04 Second boot always black screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/plymouth/+bug/2065321/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs