Building Ubuntu Core 24 Images with snapd 2.68.4 and pc-kernel from 24/stable channel:
Ubuntu Core images built using snapd 2.68.4 together with the 24/stable pc-kernel will not function correctly until the upcoming kernel version 6.8.0-58.60+1 is promoted to the stable channel.
This promotion is scheduled to follow the full rollout of snapd 2.68.4, which is expected to complete within the next 30 hours.
If you plan to build images using ubuntu-image and a model assertion using snapd from stable channel and the kernel from the 24/stable channel, you will have to wait until the promotion of kernel version 6.8.0-58.60+1.
Already installed systems will work as expected.