On Saturday, November 25, 2017 at 6:33:29 PM UTC, Wael Nasreddine wrote:
> Hello,
> 
> As I described in the other topic titled "How To Replace Libvirt Drivers"; 
> Upon installation, I get the error `libvirtError.libvirt: libxenlight failed 
> to create new domain “domain name”` and updating the system seems to have 
> helped. I want to attempt to update all packages before continuing the 
> initial_setup, so how can I update dom0 offline?
> 
> Another option I have is to perform a net-install, I tried using 
> `https://mirrors.kernel.org/qubes/repo/yum/r4.0/current-testing/dom0/fc25/` 
> as an additional repository in the installer but I got "Error setting up base 
> repository".
> 
> Wael

Do you have any solid reasoning for suspecting these packages? It's not always 
the package itself that is the problem, but a package or a tie to another 
patckage, or that other package, which is causing the issue. Simply replacing 
libvirt probably won't do you much good, especially if you need to find all 
those possible dependencies on something so fundamental as libvirt in Qubes.

It might be better to first find out why it happens, and then perform a clean 
re-install. 

Also Qubes 4 RC-3 will be out either tomorrow, the day after tomorrow, or if 
freezing failed, then possibly next week. 
https://www.qubes-os.org/doc/releases/4.0/schedule/ It's uncertain for sure, 
however, you have reasonable chances are that it'll be out tomorrow.

However, are you sure you got VT-D enabled in your UEFI (BIOS)? You also 
enabled Virtualisation in general, in case the motherboard has a double 
enable/disable function like some boards do? Libvirt errors does sound like it 
could be related to missing hardware features that Qubes 4 requires. 

Remember that Qubes 4 is much less happy with missing security features, 
compared to Qubes 3.2. You muight get Qubes 4 running without, but it will 
likely be ugly, i.e. like your libvirt errors. 

There is even talks to prevent Qubes 4 to install at all if the hardware is not 
living up to the security requirements, in order to avoid situations like this. 
For example, something like that might even be in Qubes 4 RC-3 for all we know. 

You made absolutely sure, that your hardware meets the requirements, and also 
absolutely sure, that all of them are enabled?

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