In trying to make my wifi adapter working, I decided to try
kernel-latest on Dom0, which installed kernel
5.10.11-1.fc25.qubes.x86_64. The result is a system where I cannot start VMs (not even VMs with no devices connected to them) due to
libvirt errors ( The kernel doesn’t support reset from sysfs for PCI device …).
I tried to go back to my old kernels by changing
/boot/efi/EFI/qubes (here I have options 5.4.90-1.qubes.x86_64 and 5.4.91-1.fc25.qubes.x86_64, besides the one I mentioned above). The real big problem is that these kernels do not seem to appear to work anymore. As soon as I change
xen.cgf selecting one of these two kernels, I am not able to access the system (after I insert the LUKS passphrase I get black screen in the authorization manager. Moreover, from boot messages it seems that neither these kernel can start sys-net anymore).
Any suggestion is really appreciated, I spent the last week configuring my PC and I would literally break into tears if I had to re-do everything from scratch.