Comment 7 for bug 1888617

I got this error on the 5.4.0-42-gerneric Kernel:

DKMS make.log for nvidia-435.21 for kernel 5.4.0-42-generic (x86_64)
So 26. Jul 12:20:06 CEST 2020
make[1]: Verzeichnis „/usr/src/linux-headers-5.4.0-42-generic“ wird betreten
test -e include/generated/autoconf.h -a -e include/config/auto.conf || ( \
echo >&2; \
echo >&2 " ERROR: Kernel configuration is invalid."; \
echo >&2 " include/generated/autoconf.h or include/config/auto.conf are missing.";\
echo >&2 " Run 'make oldconfig && make prepare' on kernel src to fix it."; \
echo >&2 ; \
/bin/false)
make -f ./scripts/Makefile.build obj=/var/lib/dkms/nvidia/435.21/build \
single-build= \
need-builtin=1 need-modorder=1
  ln -sf /var/lib/dkms/nvidia/435.21/build/nvidia/nv-kernel.o_binary /var/lib/dkms/nvidia/435.21/build/nvidia/nv-kernel.o
  ln -sf /var/lib/dkms/nvidia/435.21/build/nvidia-modeset/nv-modeset-kernel.o_binary /var/lib/dkms/nvidia/435.21/build/nvidia-modeset/nv-modeset-kernel.o
{ echo /var/lib/dkms/nvidia/435.21/build/nvidia.ko; echo /var/lib/dkms/nvidia/435.21/build/nvidia-uvm.ko; echo /var/lib/dkms/nvidia/435.21/build/nvidia-modeset.ko; echo /var/lib/dkms/nvidia/435.21/build/nvidia-drm.ko; :; } \
| awk '!x[$0]++' - > /var/lib/dkms/nvidia/435.21/build/modules.order