When dkms filas to find the sign-file if I add "set -x" in dkms script I get: + echo 'Binary /usr/lib/linux-kbuild-6.0.0-0.deb11/scripts/sign-file not found, modules won'\''t be signed' on hte console. But without set -x I get no message. It makes it hard to know what was wrong. Console on acpi-cal-dkms install: " Preparing to unpack .../acpi-call-dkms_1.1.0-6_all.deb ... Unpacking acpi-call-dkms (1.1.0-6) ... Setting up acpi-call-dkms (1.1.0-6) ... Loading new acpi-call-1.1.0 DKMS files... Building for 6.0.0-0.deb11.2-amd64 Building initial module for 6.0.0-0.deb11.2-amd64 Done. acpi_call.ko: Running module version sanity check. - Original module - No original module exists within this kernel - Installation - Installing to /lib/modules/6.0.0-0.deb11.2-amd64/updates/dkms/ depmod... " /var/lib/dkms/acpi-call/kernel-6.0.0-0.deb11.2-amd64-x86_64/log/make.log " DKMS make.log for acpi-call-1.1.0 for kernel 6.0.0-0.deb11.2-amd64 (x86_64) Fri Dec 9 02:23:27 CET 2022 make: Entering directory '/usr/src/linux-headers-6.0.0-0.deb11.2-amd64' CC [M] /var/lib/dkms/acpi-call/1.1.0/build/acpi_call.o MODPOST /var/lib/dkms/acpi-call/1.1.0/build/Module.symvers CC [M] /var/lib/dkms/acpi-call/1.1.0/build/acpi_call.mod.o LD [M] /var/lib/dkms/acpi-call/1.1.0/build/acpi_call.ko BTF [M] /var/lib/dkms/acpi-call/1.1.0/build/acpi_call.ko Skipping BTF generation for /var/lib/dkms/acpi-call/1.1.0/build/acpi_call.ko due to unavailability of vmlinux make: Leaving directory '/usr/src/linux-headers-6.0.0-0.deb11.2-amd64' " Cheers, Alban