I'm having issues with a quad video card on CentOS. We have several systems on CentOS 6.8 and CentOS 6.9. The installed hardware is: Video card - Nvidia NVS quadro 440 PC - Dell OptiPlex 9020 Whenever you update the kernel, it kills the graphical interface. The system appears to lock up and freeze during a reboot, but you can still get into it with SSH, or, if you're at the console, control-alt-F2 gets you to a command prompt. If you exclude the kernel update when applying yum update, it is usually fine. If the kernel update is applied, and you roll back the update, that sometimes gets you back into the graphical console, but more likely than not, it won't. Not sure where to go with this. Any suggestions? FW