I’m having the same issue with this Ubuntu image that was reported for initramfs. I looked at this solution:
However, my initramfs.conf file already has the ‘MODULES=most’ line. I couldn’t figure out how to solve it. The kernel seems to have been updated, but the error persists after attempting another ‘apt upgrade’. I just restarted my uConsole and it booted up correctly though.
EDIT: the error message is not the same as in the Bookworm image, so here’s the error for Ubuntu:
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Calculating upgrade... Done
The following upgrades have been deferred due to phasing:
gnome-shell gnome-shell-common
0 upgraded, 0 newly installed, 0 to remove and 2 not upgraded.
1 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Do you want to continue? [Y/n] y
Setting up flash-kernel (3.107ubuntu13~24.04.2) ...
Using DTB: bcm2711-rpi-cm4.dtb
flash-kernel: deferring update (trigger activated)
Processing triggers for initramfs-tools (0.142ubuntu25.5) ...
update-initramfs: Generating /boot/initrd.img-6.12.28-v8-16k+
Using DTB: bcm2711-rpi-cm4.dtb
Installing /usr/lib/linux-image-6.12.28-v8-16k+/broadcom/bcm2711-rpi-cm4.dtb into /boot/dtbs/6.12.28-v8-16k+/./bcm2711-r
pi-cm4.dtb
Taking backup of bcm2711-rpi-cm4.dtb.
Installing new bcm2711-rpi-cm4.dtb.
Ignoring old or unknown version 6.12.28-v8-16k+ (latest is )
Processing triggers for flash-kernel (3.107ubuntu13~24.04.2) ...
Using DTB: bcm2711-rpi-cm4.dtb
Couldn't find DTB bcm2711-rpi-cm4.dtb on the following paths: /etc/flash-kernel/dtbs /usr/lib/linux-image- /lib/firmware
//device-tree/
Installing into /boot/dtbs//./bcm2711-rpi-cm4.dtb
cp: cannot stat '': No such file or directory
dpkg: error processing package flash-kernel (--configure):
installed flash-kernel package post-installation script subprocess returned error exit status 1
Errors were encountered while processing:
flash-kernel
E: Sub-process /usr/bin/dpkg returned an error code (1)