Hello there. I am using a CM4, with a custom baseboard, but it seems that the latest kernel from the Raspberry Pi Foundation fails to load the modules?
I used the latest kernel version 5.15.y -> 5.15.53. The board boots fine, but the lsmod command turns up nothing, journalctl shows this:
Jul 18 10:39:40 mydevboard systemd-modules-load[423]: Failed to find module ‘i2c-dev’
Jul 18 10:39:40 mydevboard systemd-modules-load[423]: Failed to find module ‘arp_tables’
Jul 18 10:39:40 mydevboard systemd-modules-load[423]: Failed to find module ‘br_netfilter’
Jul 18 10:39:40 mydevboard systemd-modules-load[423]: Failed to find module ‘ip6table_filter’
Jul 18 10:39:40 mydevboard systemd-modules-load[423]: Failed to find module ‘iptable_filter’
Jul 18 10:39:40 mydevboard systemd-modules-load[423]: Failed to find module ‘ppp_generic’
Modprobing a kernel module also states this:
admin@mydevboard:~$ modprobe i2c-dev modprobe: FATAL: Module i2c-dev not found in directory /lib/modules/5.15.53-mykernel-v12+
Trying to find the kernel module:
admin@mydevboard:/lib/modules/5.15.53-mykernel-v12+$ find . -name “i2c-dev*” ./kernel/drivers/i2c/i2c-dev.ko.xz
It seems that along the line, something has changed with the module loading, or how the kernel modules are handled/created during compile?