NVIDIA: could not open the device file /dev/nvidiactl (Permission denied).
There is no device supporting CUDA.
crw-rw---- 1 root video 195, 0 2008-11-25 13:10 /dev/nvidia0
crw-rw---- 1 root video 195, 255 2008-11-25 13:10 /dev/nvidiactl
grep video /etc/group
said:I had exactly the same issues with the driver 340.29.
Tried changing permissions:
chmod 666 /dev/nvidia*
nvidia-smi was working for root but not for any other user. so eventually I had to modify /etc/modprobe.d/50-nvidia.conf
options nvidia NVreg_DeviceFileUID=0 NVreg_DeviceFileGID=33 NVreg_DeviceFileMode=0666 NVreg_ModifyDeviceFiles=1
The problem was resolved with the last variable.
Remember to delete the files /dev/nvidia*
Then it works for all users
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