debian 9 stable nvidia from repo

nvidia-xconfig  --query-gpu-info
Number of GPUs: 1

GPU #0:
  Name      : NVS 5400M
  UUID      : GPU-b338de29-91e4-4d38-69b9-20d7c8423251
  PCI BusID : PCI:1:0:0

  Number of Display Devices: 0




========================================



[  1735.704] (II) systemd-logind: took control of session /org/freedesktop/login1/session/_33
[  1735.705] (II) xfree86: Adding drm device (/dev/dri/card0)
[  1735.706] (II) systemd-logind: got fd for /dev/dri/card0 226:0 fd 11 paused 1
[  1735.706] (EE) Error systemd-logind returned paused fd for drm node
[  1735.706] (II) systemd-logind: releasing fd for 226:0
[  1735.708] (II) xfree86: Adding drm device (/dev/dri/card1)
[  1735.709] (II) systemd-logind: got fd for /dev/dri/card1 226:1 fd 12 paused 0
[  1735.711] (--) PCI:*(0:0:2:0) 8086:0166:17aa:21f4 rev 9, Mem @ 0xf1400000/4194304, 0xe0000000/268435456, I/O @ 0x00006000/64, BIOS @ 0x????????/131072
[  1735.711] (--) PCI: (0:1:0:0) 10de:0def:17aa:21f4 rev 161, Mem @ 0xf0000000/16777216, 0xc0000000/268435456, 0xd0000000/33554432, I/O @ 0x00005000/128, BIOS @ 0x????????/524288
[  1735.711] (II) LoadModule: "glx"
[  1735.712] (II) Loading /usr/lib/xorg/modules/linux/libglx.so
[  1735.716] (II) Module glx: vendor="NVIDIA Corporation"
[  1735.716]    compiled for 4.0.2, module version = 1.0.0
[  1735.716]    Module class: X.Org Server Extension
[  1735.716] (II) NVIDIA GLX Module  390.87  Tue Aug 21 16:10:56 PDT 2018
[  1735.716] (II) LoadModule: "nvidia"
[  1735.716] (II) Loading /usr/lib/xorg/modules/drivers/nvidia_drv.so
[  1735.717] (II) Module nvidia: vendor="NVIDIA Corporation"
[  1735.717]    compiled for 4.0.2, module version = 1.0.0
[  1735.717]    Module class: X.Org Video Driver
[  1735.717] (II) NVIDIA dlloader X Driver  390.87  Tue Aug 21 15:44:49 PDT 2018
[  1735.717] (II) NVIDIA Unified Driver for all Supported NVIDIA GPUs
[  1735.717] (EE) No devices detected.
[  1735.717] (EE) 
Fatal server error:
[  1735.717] (EE) no screens found(EE) 
[  1735.717] (EE) 
Please consult the The X.Org Foundation support 
         at http://wiki.x.org
 for help. 
[  1735.717] (EE) Please also check the log file at "/var/log/Xorg.1.log" for additional information.
[  1735.717] (EE) 
[  1735.732] (EE) Server terminated with error (1). Closing log file.