On 13/04/18 16:21, Danny Smit wrote: > Hi all, > Hi Danny, I'm the author of nvidia-detect. > 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 scans the pci bus and checks the returned device_class for display controllers. In your case, the scan is not returning any devices (or rather the device_class for any pci devices) > nvidia-detect also quits with exit-code 255. The internal error checking is displaying the above error message and exiting with the appropriate error code, as intended. > Could this be a bug in nvidia-detect? Or is it an unsupported configuration? > Good question, and I've no idea why it's not working on your machine. > 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 > Your device is supported: $ nvidia-detect -l | grep -i 1cb2 [10de:1cb2] NVIDIA Corporation GP107GL [Quadro P600] Support was added in the 375.39 NVIDIA driver. I assume the driver works as expected for you? If you are able to offer any more clues, please feel free to open a bug report on elrepo.org/bugs for us to track. Happy to help if I can. Phil