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@holyArch As graysky wrote, this is probaly due to the gcc version mismatch. Try with: sudo env IGNORE_CC_MISMATCH=1 dkms install -m nvidia -v 340.108 -k 5.5.9-arch1-2

@graysky The mirrors I use are all listed under Successfully Syncing Mirrors, so that's not the issue.

Edit: Thank you, osvcos, the command words (after upgrading kernel).

Is your mirror out of sync? You need the new toolkit that was used to build the kernel.

@graysky

DKMS make.log for nvidia-340.108 for kernel 5.5.9-arch1-2 (x86_64)

gcc-version-check failed:

The compiler used to compile the kernel (gcc 9.2) does not exactly match the current compiler (gcc 9.3). The Linux 2.6 kernel module loader rejects kernel modules built with a version of gcc that does not exactly match that of the compiler used to build the running kernel.

If you know what you are doing and want to override the gcc version check, you can do so by setting the IGNORE_CC_MISMATCH environment variable to "1".

In any other case, set the CC environment variable to the name of the compiler that was used to compile the kernel.

Failed CC version check. Bailing out!

make: [nvidia-modules-common.mk:201: build-sanity-checks] Error 1 make: Entering directory '/var/lib/dkms/nvidia/340.108/build/uvm' cd ./..; make module SYSSRC=/lib/modules/5.5.9-arch1-2/build SYSOUT=/lib/modules/5.5.9-arch1-2/build KBUILD_EXTMOD=./.. make[1]: Entering directory '/var/lib/dkms/nvidia/340.108/build' NVIDIA: calling KBUILD... make[2]: Entering directory '/usr/lib/modules/5.5.9-arch1-2/build' 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=.. \ single-build= \ need-builtin=1 need-modorder=1 scripts/Makefile.build:42: ../Makefile: No such file or directory make[3]: No rule to make target '../Makefile'. Stop. make[2]: [Makefile:1693: ..] Error 2 make[2]: Leaving directory '/usr/lib/modules/5.5.9-arch1-2/build' NVIDIA: left KBUILD. nvidia.ko failed to build! make[1]: [Makefile:197: nvidia.ko] Error 1 make[1]: Leaving directory '/var/lib/dkms/nvidia/340.108/build' make: *** [Makefile:222: ../Module.symvers] Error 2 make: Leaving directory '/var/lib/dkms/nvidia/340.108/build/uvm'

@holyArch - Builds fine for me in a clean chroot. Not sure what to tell you.https://gist.github.com/graysky2/55b9912ce90a82d7a7714f9b6f0854c2

And please do not flag out of date because you ran into a build error. It's out of date when upstream releases something new.

==> dkms install nvidia/340.108 -k 5.5.9-arch1-2 Error! Bad return status for module build on kernel: 5.5.9-arch1-2 (x86_64) Consult /var/lib/dkms/nvidia/340.108/build/make.log for more information.

After that, I downgraded gcc, gcc-libs, linux, linux-headers.

Thanks everyone, after upgrading to kernel 5.5.8 and the drivers work again without any change, I believe xfce4 etc were also upgraded meanwhile.

@wurbelgrumpff I use xfce4 and it doesn't freeze.

I upgraded to current 5.5.8. With kde all work fine.