Hi all, I'm testing an installation of nvidia drivers on a HP Z4 workstation (nvidia Quadro P600) with CentOS 6.9. Running nvidia-detect with this setup gives the following output: # nvidia-detect Error getting device_class nvidia-detect also quits with exit-code 255. Could this be a bug in nvidia-detect? Or is it an unsupported configuration? The following hardware is detected, it seems some sort of unknown Intel device is detected by the OS: # lspci | grep VGA 00:1f.5 Non-VGA unclassified device: Intel Corporation Device a2a4 21:00.0 VGA compatible controller: NVIDIA Corporation Device 1cb2 (rev a1) # lspci -n | egrep '00:1f.5|21:00.0' 00:1f.5 0000: 8086:a2a4 21:00.0 0300: 10de:1cb2 (rev a1) Tested with the following version (with equal results): nvidia-detect-390.25-1.el6.elrepo.x86_64.rpm nvidia-detect-390.48-1.el6.elrepo.x86_64.rpm -- Regards, Danny