I have posted a thread on CUDA 7 not working on Xen, but I think the main problem is that my graphics card never worked on xen environment.
Simply put, My card just goes blank screen during boot with Xen hypervisor.
I can still ssh into the system, and do lspci, nvidia-smi, and nvcc -V. But the fact X doesn’t work means something very wrong.
A few people has reported this issue here: https://devtalk.nvidia.com/default/topic/691565/geforce-driver-problem-on-centos-6-4-with-xen-installed/. However, there seems no solution to it.
Anyone has had similiar issues on Xen ? Still, any pointer will be appreciated.