For posterity, I was able to track the problem down to what appears to be an issue with the netvm acquiring pci devices that should ostensibly be network controllers. I wasn't able to get anywhere by simply removing my RAID controller so I removed the GPU (ATI HD) and was finally able to complete an installation on integrated graphics. When I reinstalled everything and booted back into Qubes networking was no longer functioning. I opened the netvm's settings and noticed that the only PCI device it had captured this time was my RAID controller:
RAID bus controller: LSI Logic / Symbios Logic MegaRAID SAS 2108 [Liberator] (rev 05) I was able to get things running again by shutting down the netvm and its dependents then manually reassigning PCI devices. -- You received this message because you are subscribed to the Google Groups "qubes-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to qubes-users+unsubscr...@googlegroups.com. To post to this group, send email to email@example.com. To view this discussion on the web visit https://groups.google.com/d/msgid/qubes-users/4c01fdf1-0fc0-4377-805d-c0e2aab8edbb%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.