sys-net and sys-firewall dont start with 5.10x… I did a new update today with kernel-latest-qubes-vm,but nothing changes. I I will find a documentation how to create a new sys-net, then I will try it without the dispvm. Maybe it is a problem because I am running sys-net ,sys-firewall as a dispvm. But the new kernel as much changes and it is not easy to make it running for a system like qubes, that supports nearly any distro . I am running with kernel 5.8x everything fine and with kernel 5.9.14-10 the system is booting and sys-net and else,too but I cannot conect with wired connection ,just my wireless card is working. but detected are both connection, but the wired dont work. That is strange,too. Usually wired is better and easier to get working and of course I prefered it and like to get it workng again,too.