> The time was playing against me so I went back to centos6 (these > desktops must be available monday) and all run fine. I will investigate > this later. It's easy for me to switch from Centos6 to Centos7 as the OS > is automatically installed (PXE boot + Kickstart) Hi Patrick, we can help you investigate the problem and found the root cause building an identical setup using your kick-start. Can you share it with us for this purpose? It seems that something related to your setup and goes wrong in some way one on CentOS7 Cheers, Fleur