Since kernel 6.8.10-300.fc40.x86_64, boot hangs on KDE Plasma (kernel 6.8.9-300.fc40.x86_64 was the last good one). I found that there is a job running infinitely:
'Job dev-disk-by\x2duuid-8e895....running ...' The above mentioned UUID (8e895 ...) corresponds to the kernel 'resume=uuid=...' command line parameter.
When I comment it out in GRUB2, as suggested in
https://discussion.fedoraproject.org/t/solved-boot-hang-job-dev-disk-by-x2uu...
then the system boots as expected.
This is a rather fresh install of fedora 40 (running on ext4):
da 8:0 0 232,9G 0 disk ├─sda1 8:1 0 1,1G 0 part /boot ├─sda2 8:2 0 49,1G 0 part / ├─sda3 8:3 0 31,7G 0 part /home └─sda4 8:4 0 151G 0 part /mnt/Daten3
I have no swap partition, resume after hibernation works without errors.
Although there is an obvious workaround (permanently removing the resume parameter from the kernel command line), I still wonder what has happened?