On Wed, Apr 29, 2020 at 8:09 AM t_pol <t_pol@tiscali.it> wrote:

Hi list members.

After having worked fine for a number of kernel upgrades from
5.4 to 5.5 ... , the nvidia-340xx module was not automatically
rebuild by kmod during the kernel upgrade to 5.6.6 leaving
the system stuck during the boot process.

Right now I've uninstalled kernel 5.6.6 and
excluded kernel* in /etc/dnf/dnf.conf.

Sounds like you might be getting hit by this bug: https://bugzilla.redhat.com/show_bug.cgi?id=1821946

I have been unable to build the DAHDI drivers for 5.5 and newer kernels. The build complains about a missing include file "classmap.h". The bug report mentions this occurs just trying to compile the kernel from source, and also for the VMware drivers, so if this is what is biting you, it's not specific to the NVIDIA drivers.

--Greg