Compatibility with Ubuntu 20.10

[Quade777]

I can confirm that the dispalylink drivers fail in Ubuntu 20.10 (upgrading from 20.04). After upgrade the monitor connected to my displaylink adapter is black.

The issue seems to be fa failure in building evdi.

Verifying archive integrity... 100% All good.
Uncompressing DisplayLink Linux Driver 5.3.1.34 100%
DisplayLink Linux Software 5.3.1.34 install script called:
Distribution discovered: Ubuntu 20.10

Installing

[ Installing EVDI ]
[[ Installing EVDI DKMS module ]]

Creating symlink /var/lib/dkms/evdi/1.7.0/source ->
/usr/src/evdi-1.7.0

DKMS: add completed.

Kernel preparation unnecessary for this kernel. Skipping...

Building module:
cleaning build area...
make -j8 KERNELRELEASE=5.8.0-26-generic all INCLUDEDIR=/lib/modules/5.8.0-26-generic/build/include KVERSION=5.8.0-26-generic DKMS_BUILD=1...(bad exit status: 2)
ERROR (dkms apport): binary package for evdi: 1.7.0 not found
Error! Bad return status for module build on kernel: 5.8.0-26-generic (x86_64)
Consult /var/lib/dkms/evdi/1.7.0/build/make.log for more information.
ERROR: Failed to install evdi/5.3.1.34 to the kernel tree.


This is the output in the make.log

DKMS make.log for evdi-1.7.0 for kernel 5.8.0-26-generic (x86_64)
Thu Oct 29 08:37:40 CET 2020
make KBUILD_VERBOSE=1 M=/var/lib/dkms/evdi/1.7.0/build SUBDIRS=/var/lib/dkms/evdi/1.7.0/build SRCROOT=/var/lib/dkms/evdi/1.7.0/build CONFIG_MODULE_SIG= -C /lib/modules/5.8.0-26-generic/build modules
make[1]: Entering directory '/usr/src/linux-headers-5.8.0-26-generic'
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)

ERROR: Kernel configuration is invalid.
include/generated/autoconf.h or include/config/auto.conf are missing.
Run 'make oldconfig && make prepare' on kernel src to fix it.

make[1]: *** [Makefile:746: include/config/auto.conf] Error 1
make[1]: Leaving directory '/usr/src/linux-headers-5.8.0-26-generic'
make: *** [Makefile:22: all] Error 2