Comment 3 for bug 1611635

It affects me. Ubuntu Xenial (after upgrade from 14.04)

lspci -k | grep -EA3 'VGA|3D|Display'
01:00.0 VGA compatible controller: NVIDIA Corporation GT218 [GeForce 210] (rev a2)
        Subsystem: ASUSTeK Computer Inc. GT218 [GeForce 210]
        Kernel driver in use: nvidia
        Kernel modules: nvidiafb, nouveau, nvidia_340

glxinfo | grep OpenGL
OpenGL vendor string: NVIDIA Corporation
OpenGL renderer string: GeForce 210/PCIe/SSE2
OpenGL core profile version string: 3.3.0 NVIDIA 340.104
OpenGL core profile shading language version string: 3.30 NVIDIA via Cg compiler
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
OpenGL version string: 3.3.0 NVIDIA 340.104
OpenGL shading language version string: 3.30 NVIDIA via Cg compiler
OpenGL context flags: (none)
OpenGL profile mask: (none)
OpenGL extensions:
OpenGL ES profile version string: OpenGL ES 2.0 NVIDIA 340.104 340.104
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 1.00
OpenGL ES profile extensions:

journalctl -b -p 3 >01.txt

-- Logs begin at nie 2018-06-24 09:06:54 CEST, end at nie 2018-06-24 09:19:18 CEST. --
cze 24 09:06:54 user1-945P-DS3 nvidia-persistenced[477]: Failed to query NVIDIA devices. Please ensure that the NVIDIA device files (/dev/nvidia*) exist, and that user 118 has read and write permissions for those files.

The point is that I don't have any nvidia folder in /dev but somehow graphic card works. I only have there three files: nvidia-uvm, nvidia0, nvidiactl. All have 0 B size.